Zobrazeno 1 - 10
of 62
pro vyhledávání: '"L.V. Mirzoyan"'
Autor:
L.V. Mirzoyan
Publikováno v:
International Astronomical Union Colloquium. 151:47-54
Observational results on flare stars in the Galaxy and their interpretation, based on the observational approach to early stages of stellar evolution at Byurakan, are considered. The evolutionary path of red flare stars is determined. Stellar flare a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16805636d410f1d42eb4228f50a58aad
https://doi.org/10.1017/s0252921100034552
https://doi.org/10.1017/s0252921100034552
Publikováno v:
Symposium - International Astronomical Union. 137:121-124
The problem of flare activity frequency among red dwarf stars is discussed. The observational data on stars in Orion, Pleiades and solar vicinity are used. It is shown, that relative number of flare stars among all red dwarf stars in the considered s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd919117a8e54bd850114dc0256adc22
https://doi.org/10.1017/s0074180900187583
https://doi.org/10.1017/s0074180900187583
Publikováno v:
Symposium - International Astronomical Union. 137:95-98
Spectral observations of 6 flare stars in the Pleiades cluster are carried out which occupy different positions on the Hertzsprung-Russell diagram relative to the main sequence: above and below it. The spectral indices which are sensible to luminosit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0277129b76f9e0ee1ac3cd6fb84a54b
https://doi.org/10.1017/s0074180900187510
https://doi.org/10.1017/s0074180900187510
Publikováno v:
Symposium - International Astronomical Union. 137:59-62
The mathematical expectation for detection of stellar flare on UV Ceti type stars in the solar vicinity during photographic patrol observations with 40″ Shcmidt camera of the Byurakan Astrophysical Observatory is estimated. We use the luminosity fu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7e5b773d18b2800d4d84fbe2a45e039
https://doi.org/10.1017/s0074180900187443
https://doi.org/10.1017/s0074180900187443
Autor:
L.V. Mirzoyan
Publikováno v:
Symposium - International Astronomical Union. 137:1-13
The observational data on flare stars observed in star clusters and associations as well as in the solar vicinity (the UV Ceti type stars) are discussed. The analysis of these data show that they constitute one common class of objects possessing flar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::366bed29ffc51da7852effd97abd58ed
https://doi.org/10.1017/s0074180900187303
https://doi.org/10.1017/s0074180900187303
Publikováno v:
International Astronomical Union Colloquium. 151:65-66
Mirzoyan (1976) showed that the concentration of flare stars around the center of the Pleiades cluster (Alcyone) was the same, irrespective of their proper motions. At that time, however, proper motions of only a few flare stars were known. The resul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::721b067d05dac39cc1e76b4fd91a544a
https://doi.org/10.1017/s0252921100034606
https://doi.org/10.1017/s0252921100034606
Autor:
L.V. Mirzoyan, V.V. Hambarian
Publikováno v:
International Astronomical Union Colloquium. 151:63-64
Photographic observations with wide-field telescopes of flare stars in the Orion association and the Pleiades cluster have been carried out since 40 years. About 500 flare stars were found in each of these systems. The ages of these stellar systems d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d87a360e7e14fadee615ad042b618555
https://doi.org/10.1017/s025292110003459x
https://doi.org/10.1017/s025292110003459x
Autor:
L.V. Mirzoyan
Publikováno v:
International Astronomical Union Colloquium. 151:55-56
Red dwarf stars in the Galaxy occur in three forms: as flare stars, T Tau stars and red dwarf stars of constant brightness. Haro (1957) suggested that all these stars present regular evolutionary stages of red dwarf stars.The space distribution of UV
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16038d4309a51505898132f402fc09fe
https://doi.org/10.1017/s0252921100034564
https://doi.org/10.1017/s0252921100034564
Autor:
E.K. Kharadze, O.A. Mel’nikov, V.V. Sobolev, Aleksandr A. Boyarchuk, E. R. Mustel, L.V. Mirzoyan
Publikováno v:
Uspekhi Fizicheskih Nauk. 126:169-172
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf11876422b582d5ebd0ab89b59a896a
https://doi.org/10.3367/ufnr.0126.197809l.0169
https://doi.org/10.3367/ufnr.0126.197809l.0169
Autor:
L.V. Mirzoyan
Publikováno v:
International Astronomical Union Colloquium. 69:61-66
The discovery and study of stellar associations by Ambartsumian (1947, 1954 a) proved two fundamental points regarding the star formation process, e.g., Mirzoyan, 1976. One of them is that the formation process still continues in the present evolutio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21294dfc4c660e07ed9058309038f6cc
https://doi.org/10.1017/s0252921100100351
https://doi.org/10.1017/s0252921100100351