SCIENTIFIC ABSTRACT AMBARTSUMYAN, S. G. - AMBARTSUMYAN, V. A.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000101220008-7
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: March 20, 2001
• Sequence Number: 8
• Publication Date: December 31, 1967
• Content Type: SCIENCEAB

ARUIYUNYANP R*K*1 kand.biolog. nauk; AMBARTSUMYAN, S.G.
Lability of the separate links of visual analysor in rabbitB
following radiation injury. Vop. radiobiol. AN AFH. SSR 2:43-
56 161. (MIRA 1814)

"INMGRANUIAR CORROSION OF ANJMINUM ALLOYS CONTAINING COPPM)" Korroziya i
azshchita metallov (corrosion and Protection of Metals), Moscow) Obornogiz, 1957.
36'6 p.
PURPOSE: This book is intended for engineering) technical, and scientific
personnel at industrial plants, research institutes, and design offices working
in the field of corrosion-protection of stainless steel, high-strength structural
steel, and light alloys.

SOV/1 37-58-10-21313
Translation from: Referativnyy zhurnal, Metallurgiya, 1958, Nr 10, p 124 (USSR)
AUTHORS: Pavlov, S. Ye., Ambaz~~~__
TITLE: Intercrystalline Corrosion of Aluminum Alloys Containing Copper
(Mezhkristallitnaya korroziya alyuminiyevykh splavov,
soderzhashchikh med')
PERIODICAL: V sb. : Korroziya i zashchite metallov. Moscow, Oborongiz,
1957, pp 199-217
ABSTRACT: In the process of, intercrystalline corrosion of alloys of Al
with Cu, among them Duralumin, an iMpDrtant role is played by
secondary processes. The surlace of an Al-Cu alloy possessing
a uniform distribution of phase in-trusioni on the grain borders
can be divided, according to its tendency towards intercrystal-
line corrosion in NaGI solutions, into a region which is not
sensitive to an attack of this type (the process goes on with
depolarization of oxygen only, i. e. , without an evolution of
1-14) and a sensitive region where the corrosion is accompanied
with an evolution of HZ. In the region where the corrosion
proceeds with oxygen depolarization exclusively the absence of
Card 1/2 intercrystalline decomposition is caused by the formation of a

SOV/1 37-58-10-21313
Intercrystalline Corrosion of Aluminum Alloys Containing %~-,opper
protective film on the Cu.Alz intrusions in this region. This protective film
consists of products of corrosion which inhibit further development of the
process. In the region where the process is accompanied by an evolution of
H., there is no film on CuA12 and an intercrystalline attack is developed. An
immediate cause of the evolution of HZ must be sought in the negative difference
effect.
1. Aluminum-copper alloys--Corrosion L. A.
Card 2/2

L 40174-66 ET1/'E'4P(t)/E J(m) 1311 (c) 3 D kl~j'.JT
Wi L
ACC NRa AP6025629 SOURCE CODE: UR/G413/66/000/013/0080/0080
INVENTOR: Alltman, M. B.: 4LbartsumXan S. M.: Kolobnev, 1. F.: Lotareva, 0. B.:
.nj!~ - A
Loktionova, L. I.: Spiridonov__a_,--37.-Y.___
ORG: none
TITLE: Cast aluminum-base alloy. Class 40, No. 183398
SOURCE: Izobreteniya, promyshlennyye obraztsy, tovarnyye znaki, no. 13, 1966, 80
TOPIC TAGS: aluminum alloy, cast alloy, zinc containing alloy, magnesium containing
alloy, manganese containing alloy, titanium containing alloy, iron containing alloy,
beryllium containing alloy, stress corrosion, corrosion resistant metal
ABSTRACT: An Author Certificate has been issued1for a cast aluninum-base alloy con-
taining zinc, magn4e(lum, manganese and titanium~'I[n order to reduce susceptibility
to stress corrosio hile retaining high mech cal propertiesthe content of alloy
elements should be kept within the following limit,; in %: zinc .3.5-5.5, magnesium
1.2-2.2, manganese 0.2-0.7, titanium 0.05-0.25, chromium 0.1-0.6, iron 1.0-1.61
and beryllium 0.01-0.5. The alloy may also conta'n silver, nibbium,cobalt, nickel, L
molybdenum, boron, tungsten, and rare-earth metals in an amount up to 1.5%. (DVI
SUB CODE: 1l/ SUBM DATE: 12Jun64/ ATD PFESS:S'0~r3
Card 1/1 /V~~ UDC: 669.7,L5'5'721'74

C N R?
,,T 771
Ov) '/C'oo
AUMORS Shilova ye I. Nik-itu ova 0 G Amb n r t n 01h,"oll YLII
none
TITLE: ~!-o.Lr o3 of al~2ys of the sysLeln ivirn-copivr-in., if-, ties lum--rn ngnnoso
SOMICE: All SSSR. Institut motalliu-gil. Motallovor'oniyo legki1h nplavov (Motal-
lograpEy--o-fl- ight alloys). Mlosco~r-'-T-zd-vo Nauka, 1965, 78-87
aUc
TOPIC TAGS: alloy phase diagram, mot", ly / DIS
alloy, V65 alloy, DI alloy, D16 alloy, D19 alloy, VD17 alloyD19 alloy
ABSTRACT: The streqgth liir~it, relative elongation, corrosion stability, fatigue
limitp and the tendency towards crack formation dirting welding of the alloys formed
by the q.Y;tem Al.-Cu-1,;g-111n were studied. The 9 poef-inens were propnred in a grqpkiLte
crucibloVat 680--6900 and were honoCenizod at 480(' for 24 hr. Tho coefficient of
crack formation during welding was calculated accordinc- to the formula
K = 2~r A 00,
Etweld d"
where is the total lungth of cracks and is the total length of wol
cr wold
The experimental results are shown graphically (seo Fig. 1), The experimental
Card 113

-,-- -- L-398-04-66. - -- --- -- . - -- , -- - -, - - ---
,.! ACC NR,

ACC N.Ri -6016
rosq1ts tVcro cQmpare,4 wi4i tho corijosponding rosuli s for the knr~ustxinl alloys Di
D16 \'and D19. 1-'It was foiuid t.';;)t alloys corntaining 3.5-61~ Cu
and 31'; or more It showed the least tondency towm-do crack forration. The corro-
SiCA stability of alloy containing 3-5' Cu and 0.5--4% I~g is independent of their
phase position, i.e., c< + CuAl 2 + S or t~ + S. flovuver, intorcry3tallino corrosion
which results from short-time heating to 150C does (]open,] on the nature of the
phase composition, Orige art, has: 1 table and 7 figures.
ORIG: REF: Oll/ OTH FIT: 002

MRARTSUMM, TS,L,
- -- 1: .. ~;i-
Thermal analysis of certain uranium minerals. Atom. energ. Supplement
no.6:86-125 157. (MIAA 11:7)
(Uranium ores--Analysis)
..!* I

AMBARTSURTIP11, Ts. - I I
1. . -, KAWGINA. N.G.
ThArnal decomposition of schroackingerite. Min.sbor. no.11:
356-360 '57. (MIRA 13:2)
1. Ilauchno-issladovatollskiy sektor Moskovskogo geologornave-
dochnogo ine tituta, Moskva.
(Schroackingerite)

- - - _r - W I -;, 0
w " "Il'."V, 1*!F'Wi4&lZllMT.,lw&l" .9".'i V ~
-k 7 L.roa i-.- ar i-cv a )__ - -
DATA, UJCEW~PqLi UiW~TUI.', 'uy V. A. Foh;:arjova, T3. L. Av,Oart.-;Ur;yan.
Report presented at -nd Uj': Atoms-for-Feace Conference, _;~meva, 9-13 -'el-t 1958
,1/;/ ,;~ #")/.) .~-.3- 1 -7"/
.., e / ,, i5 ~7,,? __

kWARTSUMYAR _,TS.L. BASAIDVA, G.I.; GORZHEVSWA, S.A.; NAZAPMKO, N.G;
- L j
p R.P.; PCHELINTSEVA, G.M., red.; XAZELI, Ye.I., tekhn.
red.
(Thermal investigation of uranium and uranium-containing minerals]
Termicbeokie issledovaniia uranovykh i uransoderzhashchikh minera-
lov. Moskva., Goa. izd-vo lit-ry v oblasti atomnoi nauki i tekhniki,
1961, 146 p. (PIRA 14.-11)
(Uranium-Analysis)

GERTSEVA, R.V.; TSYBULISKAYA, M.S.; AMBARTSUMYAN, TS.L.; NAZAREINKOO N.G.;
I POLUARSHINOVp G.P.1 KHODZHA
Now data on hydrous pit.-hblande and urgite. Zap.Vaes.min.ob-va
90 no-5:549-556 161. (MIRA 14:10)
(Urgite) Oitchblande)
I --

KARPOT,, V.I.; AMB
OllijaJIMM&&
Ulf
Some pbysiochomical properties of uranyl phosphates. Zhure
neorg. khin. 7 no.811838-1841 A& '62. (MBA 16t 6)
(Uranium phosphate)

AUTHOR: Korengv,_M, A., Nevsklf. B, 'V,~ Av)ar~numyan. Til. L.;
Nazarenko, N. 13.
TTTLE: Precipitation of uranyl and ammonium arsenateB and some of their properties
SCI]RCE: Alonria-.-n energiya, v, 1~,. no.
TOPIC TAGS! uranium compound. uranyl nitrate, anmonium compound.
arsenate, ch,mi~al pro-cipitation
ABSTRACT: X ray ;iad thermographic Eina 1 -i 5- n'. * r~;F , v
uranium) showed that as 200C and arsenic-uranium near stoichiometric the precipi-
taien of uranyl a nLd ammonium arsena ~ e s f rom- u ra n- 1 n i t ra f P!~ began a t PR ~~ 1 .5.
At pH = Z.:2 tne main part ol ura-n-iurri precipiTal:ioa wan a~:;compi;unvu oy fue unmPin-vurn
"Pu t F-ri, Za t Prepar-d uranvi vn-i ti :,T -i -
n - V -D powj,?, Witf, .3. V"_rl
P
Card 112

ACCF-SSION KR : AP502?495

x Imn
&nd aluminum rn P io t e E uranium (0.2509/
ar, func.ions of

o .
?i no nP. c,
h P '['he pH values f or the

u raaN n
mm~,,~: k0f-rlned.
"'RT ;t:I:i :-)n

there I Ve pre" lp~. tal
of diralent irork and alu-min V3,
ASMIATION:
S UBM T7 TIKD 13May64 ENCL: 00 Suri CODE.- Ic, (10

AMBARTSUMYAN, V.A.; MIRZOYAN, L.V,
Development of astrophysics in Soviet Armen'la. Iz ist.est.i tekh.
2t21 162, (MIRA 1814)

AMBAR7SUI4YAN, V.A.
Problem of multiple light scattering in a plane-parallel
medium with internal reflection from the boundary surface.
Uch. Zap. LOU no.3230-11 164. (KRA 17:12)

AMEARTSSUMYAN, V,A., InCl.; FENELONOV, V.G-Y inzh.; MEYTIN, G,I,., lnzh.
I - ~ I ~~ . -1- -', 1- 1-11-- 1 - - 1: ~ ~ - - I
Uise. of mercury-type transducers in heat protection syistems of
electric motors. Prom. energ. 20 no.6:13-15 Je 165.
(MIRA 18:6)

OMATITS04YANS V. A. and KOSITEV, N, A.
"The Nature of the Visible Solar Surfacej" Zettschr.,.ft fur Physik, Vol. 39,
No.1, pp 54-68o 1926

MARTSUMN, V. A. and KOSIREV., N. A.
URadiative Iquilibrium in the Outer Layer of S:~ars,ff Royal Astronomical
Society, Monthly Notices., Vol. 87, pp 209-215, 1927

AMAMMAN, V. A. and KOSIREV, N. A.
"Integral Equation of Radiative Equilibrium," Zettachrift fur Physik, Vol. 47,
Nos. 7-8, pp 602-607, 1928

AMR rS N,__V. A- Wd
. "Radiation-Eqilibrium Integral Equation," Zeitschrift fur Physik,, 52"
Nos* 3-4p pp 263-2670 1928

AMMUMVp V. A.
1929
I'Eigen Value Theory,t' Zeitschrift fur Physik, 53, NOB,. 9-io, pp 69o-695,

LMMTSMIUN, V. A.
"Linear Geometry of Functional Space," Zeitschrift fur Physik, 55,, Nos, 21-12.,
pp. 801-805, 1929

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A OONCLUSION OF Tl*. DIRAC T!*)DRY1W THE PRDTON IND ELWTkONS.
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A)Mn,SLRM,N-,-V.- A-. --
"Quantitative Spectral Analysis of Solar Atmsphere," Zeitschrift fur Physik,
60, Nos. 3-4, pp 255-2682 1930

P V. A.
"Theory ef Absorption Lines in SteUar Atmospheres) if Zeitschrift fur
Physik, 61, Nos. 1-2, pp 151-152, 1930

AlakRTSMAH11 V. A. and IVANEHKO, D.
"Possibility'of Avoiding an Infinite Auto-Reaction for the Electron,," Zeitschrif
fur Physik, 64, Nos.7-8, pp 563-567, 1930

AMBARTSUM.yANJ V. A. and IVANEWO, D.
"Unobservable Electrons and -Rays.," Dokl. AN SSSR) Vol. 190, pp 582-584)
1930

AMBARTSUffANy V. A.
"Radiative Equilibrium of a Planetary Nebula." Royal Astronomical Society,
Monthly Notices, Vol- 93, No-1, pp 5o-6i, 19-12

AmBkRTSUKYANi, V. A.
"Monochromatic Luminosity of Gaseous Nebulae," Zeitschrift fur Astrophysik,
6, Nos. 1-2, PP 107-113, 1933

AMMTSUMYILN, V. A. and KOSIREV. N. A.
"Mass of the Oas Ejected from a Nova," Zeitachrift fur Astrophysik., Vol* 7.
pp 320-325p 1933

AMBARTSUMYANs V. A.
"Course of Astrophysics and Star Astronomy.," Gosudarst. Tekh. Teoret. lzdatelf...
Moscow,, 2 vols,P 1934-36.
Contributor in the above book.

AMMTSUMN, V. A.
"Ionivation in Nebplar Envelop~ SurTounding Star," Ropl Astronomical
Society, Monthly Hotes, Vol. 95, pp 469-482, 1?35

AMBARTSUMUN, V. A.
"Derivation of Frequency Function of Space Velocities of the Stars from
Observed Radial Velocities,," Royal Astronomical Society, Monthly Notices.,
vol. 96, pp 172-1792 1936

AMMTSUMYAN, V. A.
lton the Statistics of Binary Stars.." Astron. Zhur-j, DI, No.3,, pp 207-19j,
1937.
Astronomical Observatory, Leningrad Unive

AMBARTSMAN., V. A.
"Diffuse Nebulae and Cosmic Absorption.,11 Byulleten AbastumanBkaya Astro-
fizicheska7a Observatoriyu,, Gora Kanobili., pp 37-52, 1938

-- -
"Problem of the DYnamias of Open Star Clusters," Ucheriye Zapiski Leningradskogo
Gosudarstwennogo Ordena Lenin& Universiteta, Vol. 22, 1938, Astronoldcheskaya Seriya.,
No.4, P. 19.

AMBAPTSWANP V. A.
"Theoretical Astrophy3ices" Gostekhizdat, Leningrad-Moscow.. 1939

AMBkRTSUMYAN, V. A.
"Chromospheres,," Uspekhi Astronomicheakikh Nauk, vol. 1, pp 143-66, 1939

AHWTSUMYkN, V. A.
~ ~-; " . , ~-,. ~-. -
"On the Gravitational Potential Energy of Open Clusters," Dok. Akad. Hauk, 24, No.
9p 1939.

AMURTSMAN p V. A 0
"Fluctuation in Nongalactic Mists and Galactic Absorption," ByuLU* Abastuman-
skaya Astrofiz. Observ. Gora Kambili, Noa.4, pp 17-23, 1940

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frf 4 radiation in CHU atuis. is di,lds - p, - &./,. .coo
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WrJ,rvx, the ccorive of nullation and a4morption. an'l do
it t meat of pa . The sopticatitm W the equa(i4to
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AIBARTSITMYANs V. A.
flon the Scattering and Absorption in the Atmospheres of Planati, Part 1j"
Ucheniye Zapiski Leningradakogo Gosudarstvennogo Ordena Lenina Univ.., Ser. Matemat.
Nauk, issue II, NosB2, 1941, pp 64-85

- I -
MUMM V A.
mir"I
of the Light Dispersion in a Turbid Medium)"
"A New Method for the Calculus . i Geofiz-) Nos. 1-6, 1942
Iz. Ak. Nauk SSSR, Ser. GeOP*af ght in Turbid 14ediuMS) It 1942-44.
"New Calcul&tions on the Dispersion of Ll

Am
AMBART&WANWA8 600
1. AMPARTSIAMN) V.A.
2. USSR (600)
"Diffusion of light by the atmospheres of planets.,"
Astron. Zhur., 19, No 5. 1942. Astronomical observa-
tory Leningrad University (submitted Dee 1941-Jan
19421
9. W Report U-1518., 23 Oct 1952.

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indimird in the prrwnt onali-xis 1w the cast of a
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(AlculaW in leftna oil functimik of it (- cc*#)
aml V. I - cr- #,J. u here 0 and So ate the &nets
twturen the PlOMS1 find Out MdCd~d Anti InCidCht
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pui" and pvft Kattertnif).
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brilth- 11) to rtwatant for %hit@ twoftea
(A- I) Is 'i.;71'"Wrlwally to hr4d hm p is
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AMBAMUMN; V. A I
"On the Theory of Brightness Fluctuations in the Milky Way," Dok. Akad. Nauk-, 44,
No. 6, 1944

AMARTSUMUN $ V. A.
'son the part of the 511:~fac8 Mghtness of M31 and of Galaxy caused by
High LuminositY Staresu Dokl. AN -qS:YA A" ssR, 31 NO.2, pp 39-h3, 190

AMMTSUMYAN, V. A.
.IfProblem of the Relative Distribution of TAght and Absorbing Matter in Galaxies."
Dokl. AN Arm sm. 41 No.5j, pp 133-136, 1946

AMBARTSUMYAN, V. A.
"On the Surface Brightness Within the GalaV,11 Astron. Zhur.,, 23~ No-5)
pp 258-268, 1946.
Yerevan,, Astron. Observe

---- AWA-RTMAIV, V. -A- -- - - - -- -
"The Ecolution of Stars and Astrophysics," Yerevan, 1947

AManTSM4M) Ve A*
"Y7
0 anoes 'Armbn a"
"The Vork of th6 AWWW Ct 8 1 of the '1 9'-::
SSR,* V. A. Ambartsumian, Pree, Acad Soi Armenlanlft#
4 pp
ovest Akad Nauk ssa" No 6
Describes past work of AoadaV and gives details qt.
work at 1resent In progress, Including work on olaid-,
bursts by physicists under A. 1. Alikhanyan, study of
astral astrmcoy and constructiom of a new astrapbys-
Ics"observatory, study of the origin of Armenian
metals by 1. G. P.Npklyan, and other works.
54T19

AMBkRTSUKrAN, V.A., redaktor; MARXARTIN, B.Ye.
7 "'
[star asBeciation around P Cygmil Zvesdnaia amootsiataiia vskrug
P Lebedia. Arevan, Ilsd-vo Akademli nauk Armianskei SSR, 1949. 17 p.
(Byurakan. Observateriia. Seebahchenila, no.2)o WaA 9:4)
(stars)

FA
------ - - - -- -- -- -
AMBARTSUYAN, V. A.
A
27583. Zamechaniye o galaktike, kak spirallnoy sisteme. Doklady (Akad. nauk arm.
S3R). T. X, No. 4, lo4g, S. 149-r1. iezyume na arm. yaz.
SO: Letopial 1-hurnallnykh Statey, Vol. 37, 1949

JMARTSUHYAII, V.A.
In Cephouso DoklM Arm. SSR 9 no,50-205-207
140, WMA 9:10)
1. Deystvitel'Wy chlen Akademil nauk AraWanskoy SSR. 2, Byurakan-
okay& Astrofisichosimys, Observatorlya Akademii nsuk Armyanskoy SSR*
(Stare-Clusters)

( MUMMA& -VIA,
'"MMW**Ak.
Observation of the Galaxy as a spirAl system. Dokl.AN Arm.WR 10
no.4.-145-148 149. 1(KLRA 9:10)
l.Daystvitelinyy chlon Akademil n=k Armyanskoy SSR. 2.3yurakptu-
skayn Astrofisichookaya Observatoriya Akademil nAuk Armyanskay
SSR, Yerevan.
(Xilky Vv)

AMBARTS%Wj -V. A.
"Preliminary Data on the O-Associations in the Galaxy (Milky Way), Dok. Akad. flauk,
68, No. 1, 1949.
"The Creator of National Good Fortune," Vest. Akad. Nauk SSSR, No. 12, 1949
"Review of Volume IV of the Book 'Progress of the Astronomical Sciences,, Published
by the Aca(l. of Sci., USSR, and Edited by Academician V. G. Fesenkov," Astron. Zhur.
XXVI) No- 5, 1949.

imp a S to SO a N a A 0 SO
A
it- a 10v , -A- - 0
I J- JF A-4-1
-P-6
0#0COW1
Astront J-US3R, 28
6720. Stollar a880019timlo kftrJL4S-tSn-,j ve A
r6n.
1 (1949) In Russian. Enrll3h su-%mary Jr, Ahattr *r, (ullarvard)
tv
(?40. 44). The author considors 6 pical exmnples of widely4cottered
ro,pa of stars which hftve avera~.e donsitios.C noval for stars in the
r Milky Way, but whlxh contain unusual 3ta ra(varly-type anq onissiOnline
stars) In terms of whinh their densitiet are high. The nalculstod di4ruptiv P
In the 1--co-ordinsto by ~alscttc rotation 3ho,-3 that such association
must be young. Expansion In tht4 t-co-ardinate I%uo to dirrerencea of
periods of oscllla~ion bninr, much smaller, ti;e spherical shape of the
a associations if attributed to their mode or format on, supposed to
IIV so Bir, -.--I
.00 a -9-1-
U a
U
09 0 0" *a 40 9
000 ss
40
A 0
3*4
CO 0
no*
see

AYBARTSIMAN ~ V. A.
26897
Predvaritellnye Dannyye Ob 0 - Assotsiatsiyakh V Galaktike roklady Akad. Nauk SSSR,
Novaya Seriya, T. LXVIIII No 1, 1949, S. 21-22
V. Geodeziya, Kartografiya, Topografiya
SO:LE'TOPIS NO. 34

0 41 0 0 6 0 41 0 * 0 6 6 0 6
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~

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V'
v", ) 13 U (1950) in Rowan.
0
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otAft 1c.11 oM-trij 1) jv 0) tvins ky*tl thato Itut Of the
SAU%Y tvnialm"S it. it i% atsuc%l that "If 0 tLin
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.R-Z. V-M-'s
A b & Zur Theorle der Fluktuat~min iii
I Verteflung der Sterne an der Sphlire.
Abh. Sowjet. Astron. Folge U-Sowjetwiswnschaft,
Beffieft 27, ISS-195 (1951).
Innis monograph presents a coherent account of the work
of Ambarzurnjan and his pupils on the problems in sto-
chastic theory which arise in stellar statistics from the noa-
uniform distribution of the interstellar absorbing matter.,
The basic assumption which is made regarding the latter is
that the absorbing matter occurs in the form of discrete
clouds and that the number of clouds x(s) which occur in a
distance s is governed by a Poisson distribution with a
variance Ps where P is a given constant.
The treatment is divided into 13 section& Sections I and
2 are introductory. Sections 3 and 4 treat the problem of the
fluctuations in the counts of extraplactic nebulae due to
the cloud structure of the absorbing matter in the galaxy
idealized as a plane-parallel slat), The treatment is some-
what more general than in the earlier publication of the
author [Bull. Abasturnani Observatory 4, 17-23 (1940)].
la particular, the author considers the probability u.(7)
that in a line of sight extending to a distance s from the
origin, the total optical thickness of the intervening clouds
is less than r. If t is the distance measure in the unit Ps,
the author Aows that iml(r) is governed by the integral
equation
dul(r)
(1)
dr
where F(o) is related to the probability distribution of clouds
of different transparency factors 9(-e-) by #(9) - I - F(o).
Letting
Q, f 'a-' Idu((,),
the author shows by using equation (1) that
Qk-exP f o;-4'dF(,).
Sections 5, 6, and 7 deal with the problem of the fluctua-
tions in brightnem, u, of the Milky Way. The author derives
the integral equation
(2) g (11) +dg f 10(9)g(u)d,
dot 9 9
governing the frequency distribution 1(u) of u. In (2), ioP(q)
is the frequency of occurrence of a cloud with a transparency
factor q. The solution of (2) for the case when J(q) is a delta
function is given. [The general solution of (1) without any.
restriction on *(q) has been found by S. Chandrasekhar and
G. Mach, Astrophys. J. 115, 94-102 (19S2); these Rev. 13,
0 * - M1rt%'-T -,k T"W- -t " *4 c 5 4 1 I'l 0 0 c-*T - Yk 53% 4? V . IR -11 - '~ -4 '1 - %J t4 t- %- \14, %,& \' r- ~

A M.12--AR)Z UMT AN I \A/. A-
7$6. Also the more general integral equation
8g d
(3) 90104+
Ou at q q
which governs the case when the system considered is of
finite extent has also been treated by Chandrasekhar and
Milnch, ibid. 112, 380-392 (1950); 114, 110-122 (1951);
these Rev. 12, 644; 13, 249.] Section 8 deals with the
problem which has also been treated under more general.
conditions by Chandrasekhar and Alfinch [ibid. 113, ISO-
165 (19SI); these Rev. 12, 6441.
Sections 9-12 break new ground by including in the
description the fluctuations in sutr density in addition to
the fluctuations in the interstellar absorption. If one sup-
poses that the system one considers is so far away that one
may neglect the decrease in the brightness of the stars with
increasing distance, then the integral equation governing
the distribution of the observed intensity is
1 1
(4) * (1/9) ~ (q) dq + X f. * (I - i)dB (i),
where B(s) is the probability that a star has a brightness
less than iand where P is theaverage number
clouds per unit length in the line of sight, n. is the number
of stars per unit volume, and S is the area of the sky viewed.
The author shows that by using equation (4) the montents
of I can be evaluated. Thus the dispersion is given by,
r-90 O-P (1 -4),
-qt
Attempts to generalize this simple problem are not alto-
gether successful. An attempt is also made in these last
sections to obtain theangular correlation of the fluctuations
in brightness of the Milky Way; again the results are not
conclusive [see Chandrasekhar and Monch, ibid. 115, 103-
123 (1952); these Rev. 13, 786]. S. Cka"drasekhar.
TMN ' -j O'_- ~4 . %0 A OC--r. \.Q~ 5:1 W C-\. O~S%% r

AMARrSUPYAN, V. A. PA 164T4
USSR/AstronwW - Hot Giants Jul/Aug 50
Star Distribution
"Coment on the Distrtbution of Hot Giants," V. A.
Ambartsumyan I'
"Astron Zhur" Vol XXVII, No 4, pp 228-232
Ambartsumyan shows that the idea that most stellar
associations (clusters) al*e, as it were, corridors
of eight through vast stellar fields contradicts ob-
servations. Study of subject distribution leads to
conclusion it is nonhomogeneous, with considerable
fluctuation in spatial density not due to chance.
1W_4__

ussk/Astronomy - stare 11 Aug 50
"Distribution of Hot Giants in Outer Parts of
Spiral Galaxies," V. A. Ambartsumyan, Corr Mem,
Acad Sci USSR
"Dok Ak Nauk SSSR" Vol LXXIII, No 5, PP 915-916
Our sun is so far from center of our galaxy that
to intelligent observers with instr comparable to
ours in another remote galaxy it would appear to
be located outside limits of our galaxy, as shown
on their photogrRphs. Hence the difficulty of
inverse subject problem. Submitted 20 Jun 50.
MW 175T3
YA 175T3

AlOARTIRMAN V A
VM/ Astronomy Stellar Statistics Feb 51
"Gravitational Systems and Their Evolutions," Prof L. E. Gurevich
"Prirodall No 2, pp 14-22
Considers individual stars as particles of a I'stellar gas" similar in nature to
mol gas in that the interaction of individual particles is negligible in comparison
with their kinetic energy. Discusses stellar statistics are created by V. A.
Ambartsumyan, and further developed by S. Chandrasekahr.
PA 213T2

IN V.
"'1777-
USSR/Astron6my Hot Spots, Radlo mv/4* 51
Cluster, Stellar
"Association Cassiopea II," V. A. Ambartsumyan,
Byurakan Astrophys Obs, Aca4 Sci Armenian SSR
"Astron Zhur" Vol XXVIII, No 3, pp 160-162
In region around open cluster NGC 7,510 weak
0 and B stars combine in single O-assn. Dis-
tance of assn is 2,500 parsecs, and its diam
is 160 parsecs. It is directed to region of
strong interstellar absorption and toward
source of short-wave radio noise emiscion.
189T1

AMBARTSUMYANp V. A.
"Theor7 of Fluctuation in the Visible Distribution of Stars in the 6ky,"
Soob. Byurakanskaya obeervator.,, No.6,, 1951. 61 pp.

A~RARTSWTAN, V.A,
-
(Introductory reportat the symposio on the evolution of aturs;
report at the Sth Go6grass of the Iftternational Astronomical Union
Rome 19523 Vvodnyi doklad na simpoziume po evoliutaii zvexd;
daklad na VIII 9"ezda Mezbdunarodnogo astronomichaskogo soiusa,
Rim, 1952. Moskva. Isd-vo Akad.nauk SSSR, 1952. 90 P. LMicrofilm)
1. Chlen-korrespondent Akademit nauk SSSR,
(Stars)

R T6 U N) M N, V.
U%thematioal Review
Vol. 14 1400 8
Sept. 1953
Astronomy.
_;~~nd nrcu
myAn, V. A, "Mustel',
I obolov, V. V. Teoreti4eskayA astfofizikL. (Theo-
refical astrophysics.) Gosudarstv, Izdat, Tehn.-Icor.i
Lit., Nlowow, 1952. 63S p1j. (I plate). 15 rubles.
Conl6its: 1. Throry of radiative equilibrium of mellar
plintosphereg atto tvintinuouq spectrurn of stare., Radiative
fransfer theory; Coefficient of continuous absorption; Struc.
lure of stellar pholospheres; Thermodynamic equilibrium.
11, F(irmation ofabsorption. lines in stellar spectra: Mech
nism of a1m)rlytinn line-forniation; Solution of equation of
transfer for absorption line- -fretiuencies-, Coefficients of
9clective absorption; Absorption line contours; Curve of
growth, Chemicil composition: Spectral "uences; Scale of
effective tempcraturer. Ill. Physics of the solar envelope,
Strudure of the photosphere; Granulcs; Ellectrodynamirs of
t1w sblar atmosphere: Sunspots; Faculne; Prominences-,
anc
Flocculi; Flares; 'J'he corona, Solar radio noise, IV. Pl, -
tary nebulac: Temperature of nucleus; Physiral state-,
Hadiative equilibrium. V. Novae. V1. Stars with bright
lines: Formation of erniss-lon lines. VII. Interior structure of
stars: Physical state. Vill. Dispersion of light in the planets'
atillospheres: Radiative transfer; AlbWo, IX. Interstellar
1!%atter- Diffurap tAulac; Interstellar gas,

~11,11DARTSMVW) V. A.
Formation of starB And star associations. Fiz. v SlAole. nj. 5) 125,2.
, ",I
50 1 Mr RA. _": c,:!,. I , , , , , , ,
.1 -:

Am,,roval of 'J,,c heas of the Comis.,;ion on Cos!rxoror~~,
52.
Gommisz;ion jr, i2nder the :)e,,.)t. Physlco-lath. Sci.. L~nnic taskn of Une headed
by V.A. Arabartmu-,yan, Cor. I'Mur., Aca,'. 11'ej, arc: 1.) 4,-,) can-, out. cjor~lnati: n mid
general supervision in the fj.eld of planctary and .13ttcll.ar co.7-,opi-~f, 2) to cli-ect klevel-
opnent of pLans and reneral trend of on cot-mol,ony, and 3) t) ory-.anize critical Mg.
.0 s
vievrIng and om)osbv, of iclealistac forelp c,),,-lctq)Li;)ns lin cosmol-.ony. IIPMblcra of
1
Cosmorony", a publication of the con--.innionl vrill copc: out a ~,Car,
251T36

AMBARTSUHYAN-t V. A. DSc 5;1-
USSR/Engineering - Dame
"Important Scientific-Technical Works," V. A. Ambartsumyan, Corr Hem Acad Sci USSR and
-ores of Aced Sci Armenian SSR
Priroda, No 12, pp 713. 74
States that the work of Armenian scientists who are assiatin,-, the Dresent great construction
-projects in mainly concentrated in the Acad Sci Armenian SSR, and In the past year the
T)residium has worked out 7 large-scale, joint-effort projects, approved by the committee,
for the construction of hydroelectric plants, canals, and Irrigation systems. Also,
extensive investigations are being conducted by the Water-Power Inst, Aced Scl Armenian
SSR. States that I. V. Yegiazaryan, Active Hem, Acad Sci Armenian SSR, is directing
modeling a:ad studies of hydrotechnical constructions goint; on in Armenia. N. Kh.
Arutyunyan, Active Hem, Acad Sci Armenian SSR, has develoDed a theory of creep in concrete
which i)ermlts imi)ortant investigations of phenomena in hxxc;e concrete dame.
263T78

"-ak -anmv I
VaBB/Astronowy - Cosmogony Sep 52
"Problem of Stellar Origin," V. A. Ambartsumyan,
Corr-Mem Acad Sci USSR
Priroda, Vol 41, No 9, pp 8-18
Article ascribes all research in astronomy and
astrophysics to Russians and criticises Western
science. The quoted names of contemporary Soviet
astronomers are: B. V. Kukarkin, P. P. Parenago,
B. A. Voronteov-Vellyaminov, D. Ya. Martynov,
V. A. Krat, V. G. Fesenkov, N. A. Kozyrev, Sh. 0.
Gordeladze, V. V. Sobolev, G. A. Shayn, L. E.
Gurevich, B. Yu. Levin.
249M

Ii M 15 F) Rr 5uMY*h N, V. A.
A?MARCUMIk'Jq V.A.
Dynamics of 4CNova a id Supernovw &Mug."
(Excerpt from "Teoreticheekaya Astrofisikall
(Moscowp 1952)9 Section 27, part 2. pages 4.0-471.
SO.-TranalationSup-2524467, 30 Dee 1954.

1, Ambartsumyan, V.A.
2. USSR (600)
4. Hydraulic Engineering
7. Tmportant scientific-technical works, Priroda 41 no.12, 1952*
. Rgably- ULt Jo Ra-slaa Acc2,ctsioDj Library of Congress, March 1953, Unclaslified.

LATHENTITEV, N.A., akademik, redAktor; AXBA)USUKYAN, V.A., akademik;
KUKAHIrIff, B.T., daktsr fiziko-matem`&-MS'S'NVM'~Wa~W, PUSUGO, P.P..
chlon-kerrespondent AN SM; IMVIN, B.Tu.. kandidat fixiko-matema-
tichaskikh nauk; KLUVICH, A.G., kandidat fisiko-matematichookikh
nauk, redaktor.
[Transactions of the 2nd conference on problems of cosmogony,
19-22 May 19321 Sove hohante po vaprosam kosaogonli. Trudy.
Red. koll. N.A. I&vr:at'6v i dr. Xoskva, 1953. 582 p. (HLU 7:5)
(Cosmogony) (stars)

1. jv"F:A~,T71')MI'AI;' V. , Acad.
i. ussn (6oo)
4. Asl~ronomy - Amenia
7. Under the skies of Armenia. Tekh. molod. No. 4, 1953.
9. X2pthlL List of Russian Accessions, Library of Congress, r'Lpril 1953. Unclassified.

L~' *8 L I., iOl ;J ~-A 'V ! (GU' 11SG~ q~ 6A "U I I CUIU.1 jz~
L U
I -iOll -0 &DRPM; aqI -10-I,' UmOl-A --fiAJ J~iLFIO-~a4ul)
U I J IJA i, -0 0J W ujd Pl',1-11~ 'V 'L
l,,,tAitLL-q 'V
.Z tj LL Z j)4, Uld
-,j -j oalp, ItI21c) ud~klqs- -d
d J.1 lb-p; W) j.1 l-, I Aj ki t'.1 h IjO III ~;Z,,lujusL ju Sol-j-tir)
O'JL~t,.JC,~;~),o 11fia.UT.10 j0 JjjCJjgTjj GLI'4 8 Cil 3S;~
:,44 10,06L -4ua.~ 'J~;---i' -I G .1 C!
6til jU A

ANBAIIT$ i
i
Protooters. DoU,AN Arm. SSR. 16 no.4:97-102 153.
f (NLRA 9:10)
I. INWP%Titel'Wy chlon Akgdoull wmk ArnVanskay SSR. 2. Wwakka-
AV& ostrofixichookaya observatorlya Akadoxii nauk AroWansker SSR.
(Stare-Clumters)

-AKMA~M~I AU, V . A.
Stellar Astronomy, Stellar Clusters and Associations (1734)
Dokl. AN Arm. ssR, vol 16, No 3, 1953, pp 73-76
AMBARTSUMYAIJ. V. A.
"Cold Supergiants in O-Associationa" Describes the results of author's study of
14 similar variables of spectral class M, undertaken to determine the mutual
interrelations between cold supergiants which are part of the makeup of associations
of hot giants.
SO: Referativnyy Zhumal--Astronomiya i Geodeziya, No 1, Jan 54;(W-30785, 28 July 1954)

-- - -- - -------
'MBA MUNUN, V.A,-, Wmdamik.
,-- '' Nomim
Problem of the oreation of stare in view of now works of Soviet
astraphysioletes Vest.AN SM 23 no.12-.49-6o D 153- (an 6: 12 )
(Astrophysics)

MR/Astronomy - Arsociation
21 Jun 53
"O-Association in Scorplo and its Instability," I. M. Kopylov, Crimean
Astrophys Observatory, Acad Sci USSR
DAN SSSR, Vol 90, No 6, pp 975-978
Discovery by V. A. Ambartsipyan of a now type of stellar associatidn (V. A.
Ambartsumyan, Ecolutsiya Zvezd i Astrofizika LEvolution of Stars and
Astrophysic~7 , Yerevan 1947; Astr Zhur 26,3 11949); Izv AN SSSR, Ser Fiz
14 (1950) stimulated study of spatial distribution, structure and kinematics
of groups of hot stars. Author studies association of hot giants around
open cluster NGC 6231 in Scorpio. Presented by Aced G. A. Shayn, 18 Apr 53.
26C,148

3131 AMBARTSUMYAN, V. A*
-- - -
Kosmogot-4a. Yerevanp Izo-vo Yerevanskogo UN-Ta. 1954 - 26 a. 3 ill.
20 sm. (Ye revanskiya gos. Un-t im. V- M- Molotova 3.000 ekz. 35 k Na
2 m. Yaz. - (54.56773)

-
_ABWSWAN-.V-.)r.
.W^I,
[Multiple systems of the type of the Trapezium of Orion]
Kratuye 91stemy tipa trapeteii. Wevan, 1954. 35 P. (Byurakan.
Observatorlin. Soobehchenita. no.15) (MIRA 8:9)
(Stars--Clusters)

AMWTEWA&-y-A- akademik, redaktor; GUMBURG, V.L., radaktor; LEMN, G.Ae.
karAidat fUlko-matematichask-1kh rapk-T--redaktor; MASSNVICH, A.G., kandi-
dat fiziko-m-- -tor; THRIVSKIT, Ya.P., doktor
tematicheskikh
fiziko-matamatioheskikh nauk, raarJttor; SHKLOVSKIT, I.S., doktor f12iko-
mtematicheakikh naukg redaktor; FMKIN, Mog redaktorl ALUSIMAj
T.V., takhnichankly redaktor.
[Transactions of the Third Conference on Problems of Cosutogou7, May
14-15, 1953. Origin of cosmic rays] Trudy...soveahchaniia ... 14-15
maia 1953 g.; proiakhozhdanie kosmicheakikh luchei. MosWa, Izd-vo
Akademii nauk SSSR, 1954. 319 P. (MLRA 8:4)
1, Chlen-korresponaent AN SSSR (for Ginzburg).
(Cosmic ra7s)

AKBAMWW~ MARKARYAN, B.Ye., otvetstvamVy redaktor.
Phenomenon of discontinuous emission and sources of stellar
energy. Soob.Biur.obser. no-13:3-35 154. (KLRA 8:1)
(Stare-Radiation) (Stars, Variable)

-AMWTMIYAN, V -. A.
"On the Origin of Stars," Merwires de la Societe Ro.-mle des Sciences de
Liege, Vol. lk~ Special NjImber, pp 293-300, 1954

AMBARTSUNTAN, V A aWsmik, redaktor; MUSTALI, I.IL, zadaktor;
--pMMM F.P., redaktor; KUKAMaN, H.T., doktor fisiko-mte-
maticheskikh nauk: MARNNOV, D.Ta., doktor fisikv-aatemati-
cbaskikb nauk, redaktor; MASNVICH. A.G. kandidat fisiko-
matematicheskikh nauk, redaktor; LNMN, G.A. imndidat
fisiko-matematicheskikh nauk, redaktor; TIFF3MV, Tu.I.,
redaktor; POLTAMVA, T.V., tekhnicbeskiy redaktor.
[Transactions of the 7ourth Conference on Problems of Cosmogorw;
non-stationary stars) Trt* chetyertogo soveshchantia po roprosm
koaz6goMil usistatzlo=armys zvGzdy. Koskya, lid-vo AkwAsuAl nauk
SSSR, 1955. J12 P. (KMA 8:12)
1. Chlen-korrespondent AN SSSR (for Huutell and PiLrewgo)
2. SoTisihchanip po vopronam koemogonit. 4th Koscov. 1954,
(stars)

AKBARTSUKTIN, V.A.
_',
Nature of comet-shaped nobul". Vop.keem.4:76-86 155. (MIRA 9:4)
(Nebulae)

A193ARTSLZIYAN. VIhT)R AY.A7al3?-)VICH U/5
623.455
.A4
AMPARTSU4YAN, VIKTM AWASPOVICH
THE SCATTERING CF LIGHT Il' PLANETARY ATMOSPHERES. TKANSLATED BY R. E. ULABA.
T-63. SANTA MONICA, CALIF., RAND CORP., 1956.
26 L. TABLES.
TRANSLATION OFF SECTIO1133 CF HIS -TEQ-:ETICHESKAYA AS1110FIZIKA. w
ift CONTROL NO. V-6946.

--
"Explanation of physical phenomena originating in nonstationary stars~',
a paper presented at the Conference on Nonotationary stars held at the
Byurnkan Astrophysics Observatory of the Academy of Sciences Armenian
SSR from September 20-23 1956.
Sum. 1267

AMUMUMUN, V.A.
Multiple plazies. Isv.AN Arm.BR.S#rJMW nauk 9 no-1123-43 156.
(Mm 9: 8)
1. ByurakamskVs &strofisichookWa oboorvatorlys AN Arwq=skoy SGR.
(stars)

Category :USSR/RacLiophysics Application of radiophysical methods
Abs Jour :Ref Zhur - Fizika, No 1, 195~ No 1996
Author :Ambartsumyan) V.A.
Title :-Conce7%CUffg-fE-e-IMWe of Sources of Radio Waves
Orig Pub : Tr. 5-go soveshchaniya po vopr. kosmogor.-Ii. 1955. M., AN SSSR, 1956, 413-~16J
aiskus. 416
Abstract : The little likelStood that central galactic collisions would be observed
without observing peripheral collisl=s, miLkes it doubtfal'thAt.-tbe objed~,
identified with the source Cygnus _&" Car Lbe-IJIterprbted as a co-MsIon of tvo
galaxies. The presence of two gWAetic nuclei in the region of the Cygaus-A
source can be interpreted as a flying-apart of galaxies) formed by splitting
of some initial body injo two.
Card

V. A.
"To the Problem on the Mechanism of the Origin of Stars In Stellar
tv
Associations, 6 p.
paper presented at Third Symposiun on Cosmicvl Gas Dynamics, Cambridge,
(1,Iass.), 24 - 29 June 1957-
Trans. Avrllab]--:~
L-3,101,24~'I, I Ai,r 5;~y