Zobrazeno 1 - 10
of 19
pro vyhledávání: '"S. Yu. Mel'nikov"'
Publikováno v:
Astronomy Reports. 57:89-94
The photometric behavior of the hot, young Herbig Be starMWC 297 on various time scales is studied using published data, as well as new observations. The series of photometric observations covers about 25 years. Over this time, the star showed low-am
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a23519fb058a3c2bd4917a379bec1abf
https://doi.org/10.1134/s1063772913020029
https://doi.org/10.1134/s1063772913020029
Autor:
K. N. Grankin, S. G. Sergeev, O. I. Spiridonova, V. V. Vlasyuk, V. P. Mikhailov, V. M. Lyuty, N. I. Merkulova, S. Yu. Mel'Nikov, V. T. Doroshenko, O. V. Ezhkova, N. G. Bochkarev
Publikováno v:
Astronomy Letters. 27:691-702
We present our UBV RI observations of the nucleus of the Seyfert Galaxy NGC 5548 from 1990 until 2000 at four astronomical observatories: the Crimean Station of the Sternberg Astronomical Institute, the Special Astrophysical Observatory of the Russia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32152b26f49b496e6ad70628ef0d94cd
https://doi.org/10.1134/1.1415858
https://doi.org/10.1134/1.1415858
Autor:
S. Yu. Mel'Nikov
Publikováno v:
Astronomy Reports. 45:686-691
We analyze the brightness variability of six Herbig Ae/Be stars: V1331 Cyg, LkHα198=V633 Cas, AS 442, XY Per, V517 Cyg, and WW Vul. The last two objects are UX Ori stars showing Algol-like brightness dips with amplitudes of \(2\mathop m\limits_. 0 -
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e741faef3f46abdeffafb9b74e14f9b
https://doi.org/10.1134/1.1398917
https://doi.org/10.1134/1.1398917
Autor:
J. Piironen, Svetlana V. Berdyugina, J. Virtanen, H. Karttunen, S. Yu. Mel'Nikov, K. N. Grankin, M. I. Andersen, Ilkka Tuominen, M. Trisoglio, Klaus G. Strassmeier, Sanna Kaasalainen, H. Korhonen, V. S. Shevchenko
Publikováno v:
Scopus-Elsevier
We present 8 years of previously unpublished photometric observations of FK Com together with the determination of the stability of the primary comparison star HD 117567. The observations have been carried out between 1993 and 2001 at four different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cf28f89f58a3a1261192124ec28104c
https://doi.org/10.1051/0004-6361:20010804
https://doi.org/10.1051/0004-6361:20010804
Autor:
A. V. Kusakin, É. B. Dzhaniashvili, N. Kochiashvili, N. V. Metlova, K. N. Grankin, V. P. Goranskii, O. V. Ezhkova, E. A. Karitskaya, M. I. Kumsiashvili, V. M. Lyutyi, Irina Voloshina, S. Yu. Mel'Nikov
Publikováno v:
Astronomy Reports. 45:350-360
We present observations of Cyg X-1 obtained during the coordinated international campaign “Optical Monitoring of Unique Astrophysical Objects,” carried out in observatories of CIS countries (Georgia, Kazakhstan, Russia, Uzbekistan, and Ukraine) i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a95b869f35e134ae48b136fe44670c6
https://doi.org/10.1134/1.1369798
https://doi.org/10.1134/1.1369798
Autor:
O. I. Spiridonova, V. V. Vlasyuk, V. M. Lyuty, K. N. Grankin, O. V. Ezhkova, N. G. Bochkarev, S. Yu. Mel'Nikov, V. P. Mikhailov, V. T. Doroshenko
Publikováno v:
Astronomy Letters. 27:65-73
We present our broadband UBVRI observations of the nucleus of the Seyfert galaxy NGC 4151 from 1989 until 2000 at three astronomical observatories: the Crimean Station of the Sternberg Astronomical Institute, the Special Astrophysical Observatory in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96b20ee947221bb5f95129486f2de72b
https://doi.org/10.1134/1.1344256
https://doi.org/10.1134/1.1344256
Autor:
O. V. Ezhkova, S. Yu. Mel'Nikov
Publikováno v:
Astronomy Letters. 26:233-243
The UBVR photometry of XY Per in 1985–1998 is presented. At this epoch, XY Per exhibited variability with an amplitude of ≈1m in V. The photometric variability of XY Per can be divided into three components: (1) smooth year-to-year variations in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec61a80bd10461338e5a1323524d8e58
https://doi.org/10.1134/1.20387
https://doi.org/10.1134/1.20387
Autor:
Valerij S. Shevchenko, Tomas Hudecek, Jean Lecacheux, Carol Neese, M. Antonietta Barucci, Leonid A. Akimov, Tsuko Nakamura, Vasilij G. Chiornij, Paolo Angelini, J.W. Young, O.B. Ezhkova, F. P. Velichko, C. A. Angeli, Claudia Venditti, Danilo Riccioli, François Colas, Peter Dentchev, Marcello Fulchignoni, Beatrice E. A. Mueller, Z.B. Korobova, Marc W. Buie, N. I. Koshkin, Peter V. Birch, Vasilij G. Shevchenko, Daniela Lazzaro, Michael C. Nolan, Elisabetta Dotto, S. Yu. Mel'Nikov, C. Blanco, Anna Caruso, Ben Zellner, Valdimir P. Kozhevnikov, M.Cristina De Sanctis, Nikolay Dorokhov, John R. Spencer, Roberta Venditti, Wayne Osborn, Alan W. Harris, Wieslaw Z. Wisniewski, Tadeusz Michalowski, Simon F. Green, Yurij N. Krugly, Ellen S. Howell, Petr Pravec, Valerij V. Kobelev, David J. Tholen, Alexander V. Kalashnikov, Jack MacConnell
Publikováno v:
Icarus. 117:71-89
The Apollo asteroid 4179 Toutatis passed within 0.0242 AU of Earth in December 1992, and photometry was obtained by observers from at least 25 sites around the world, at solar phase angles between 121° and 0.2°. The phase curve is well described in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c3fa7b9077cbb5939e85f40014e03b2
https://doi.org/10.1006/icar.1995.1143
https://doi.org/10.1006/icar.1995.1143
Publikováno v:
Astrophysics and Space Science. 202:137-154
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fb4ff9365f179c4618a5a7a1c313509
https://doi.org/10.1007/bf00626923
https://doi.org/10.1007/bf00626923
Publikováno v:
Astrophysics and Space Science. 202:121-136
Light curves of 78 Herbig Ae/Be stars were studied by digital analysis methods. Twenty-five thousand photoelectricUBVR observations of these stars were made by the authors in 1978–1990. A star was usually observed once a night. The stars were obser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f99a758d2e870bf02e5736da9b06726
https://doi.org/10.1007/bf00626922
https://doi.org/10.1007/bf00626922