Zobrazeno 1 - 10
of 14
pro vyhledávání: '"R. A. Epremian"'
Publikováno v:
Astrophysics. 48:32-43
The distribution of 255 O-B9-A2, K-G stars and interstellar dust in the direction of the stellar cluster NGC 1893 is studied using V, B-V, and U-B photometric data. Sixteen groups of stars (associations) are discovered at various distances. The first
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0812848016372dbc99023b8e058b054e
https://doi.org/10.1007/s10511-005-0004-9
https://doi.org/10.1007/s10511-005-0004-9
Autor:
T. V. Sardaryan, H. G. Gevorkyan, Zh. A. Vardumyan, R. S. Asatryan, Yu. E. Skvortsov, A. G. Mkrtchyan, G. K. Msryan, R. A. Epremian
Publikováno v:
International Journal of Infrared and Millimeter Waves. 24:1035-1046
The description and principle of operation developed multifunctional Infrared (IR) Spectral Radiometer, intended for researches of point and extended thermal objects in the region of wavelengths from 0.4 to 14 μm are presented. The technique of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cab410d6cd2edd8ea664f596b3d21f5a
https://doi.org/10.1023/a:1023766114461
https://doi.org/10.1023/a:1023766114461
Two dimensional spectral classification of stars in the neighborhood of the stellar cluster NGC 2175
Publikováno v:
Astrophysics. 51:276-278
Spectral classifications of 1224 O-M stars in different luminosity classes in the neighborhood of NGC 2175 are presented. The classifications are based on low dispersion objective prism spectra. B-V and U-B data for 106 of the 1224 stars are used to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85b4cb700c24c0df8cbec0dfdc1ae211
https://doi.org/10.1007/s10511-008-9001-0
https://doi.org/10.1007/s10511-008-9001-0
Autor:
R. A. Epremian, R. Kh. Hovhannessian
Publikováno v:
Astrophysics. 41:268-276
The results of an investigation of circwnstellar dust shells around 22 early- type stars with emission lines are given. The absorption at 1640 A, the linear sizes, and the masses of the dust shells were determined. They differ from one another (see T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba3035dd22580d9c5a92866f985e6843
https://doi.org/10.1007/bf03036096
https://doi.org/10.1007/bf03036096
Autor:
Kh. Hovhannessian, G. Cruz-Gonzalez, S. G. Navarro, Hrant M. Tovmassian, R. A. Epremian, A. A. Karapetian
Publikováno v:
The Astronomical Journal. 115:1083-1095
One hundred eighty-five mostly OB and some early A-type stars are detected at 1640 A with the ultraviolet telescope Glazar aboard the Mir space station in an area of about 8 deg2 in the direction toward the stellar association Cen OB2. The limiting s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bd87c48c16b4b0f7a3490cb6068eaa5
https://doi.org/10.1086/300237
https://doi.org/10.1086/300237
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 266:337-342
42 OB stars have been observed with the space telescope Glazarat 1640 A in an area of about 17 deg 2 in the direction of the stellar associations Aur OB 1 and 2. Twenty-five of the observed stars of known spectral type and with colorimetric data are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2409c0aa7a25de9fc7feb37369d892c7
https://doi.org/10.1093/mnras/266.2.337
https://doi.org/10.1093/mnras/266.2.337
Publikováno v:
Astrophysics and Space Science. 213:175-183
Using the results of observations of the Carina nebula made with the space telescope Glazar, it is shown that the extinction law for the nebula is abnormal and that there is a single OB star complex within the nebula at a distance of about 2200 pc. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40fd81a96d3314b8325938dce70f342e
https://doi.org/10.1007/bf00658208
https://doi.org/10.1007/bf00658208
Autor:
Yu. V. Romanenko, D. Huguenin, Yu. M. Khodjayants, H. M. Tovmassian, A. P. Alexandrov, R. A. Epremian, M. N. Krmoyan, A. L. Kashin, R. Kh. Hovhannessian
Publikováno v:
Astrophysics and Space Science. 188:217-231
The results of observations of 159 stars at 1640 A in Puppis made with the space telescope ‘Glazar’ are presented. It is shown that the observed stars are members of different groups of stars situated at distances of about 120, 370, 700, 1250, 24
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73508a3743900adc2025321758666cb3
https://doi.org/10.1007/bf00644910
https://doi.org/10.1007/bf00644910
Publikováno v:
Astrophysics. 35:253-256
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a255cbffd28cf2bdb4403d45552758de
https://doi.org/10.1007/bf01005039
https://doi.org/10.1007/bf01005039
Autor:
H. M. Tovmassian, V. G. Titov, D. Huguenin, R. Kh. Hovhanessian, M. Kh. Manarov, S. I. Serova, R. A. Epremian
Publikováno v:
Astrophysics and Space Science. 174:297-302
The results of UV-observations at 1640 A of the regions of stellar associations Per OB1, Sco OB1, and Cyg OB1 made with the space telescope ‘Glazar’ are presented. Respectively, 42, 22, and 30 hot stars brighter than 10m at 1640 A were detected a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fcb88e4df675469fda34982bc2b0e7d
https://doi.org/10.1007/bf00642514
https://doi.org/10.1007/bf00642514