Zobrazeno 1 - 10
of 46
pro vyhledávání: '"H. Markov"'
Autor:
T. Hegedus, O. Latkovic, H. Markov, I. Vince, A. Cseki, J. Nuspl, N. Markova, E. Rovithis-Livaniou, J. Vinko
Publikováno v:
Odessa Astronomical Publications, Vol 20, Iss 1, Pp 76-77 (2007)
Central-East-South European Binary star study group - CESEB - is an international research team focused on the study of binary stars through combined spectral and photometric observations that can be made using the Bulgarian NAO 2m telescope and seve
Externí odkaz:
https://doaj.org/article/631ac564ff3e435bb8b01571e3c61f1e
Autor:
P. Hadrava, M. Cabezas, G. Djurašević, J. Garcés, S. Y. Gorda, M. I. Jurkovic, D. Korčáková, H. Markov, R. E. Mennickent, J. Petrović, I. Vince, S. Zharikov
Publikováno v:
Astronomy and Astrophysics
Context. The eclipsing close binary UU Cas is an interacting massive double-periodic system with a gainer star partly hidden in an accretion disk. Aims. In order to study the physics of the accretion process in greater detail, along with the structur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::debf314e4e738c0ae4a219a861a0d3df
https://hdl.handle.net/10995/117965
https://hdl.handle.net/10995/117965
Autor:
H. Markov, M. I. Jurkovic, Daniela Korčáková, I. Vince, J. Garcés, Petr Hadrava, Ronald E. Mennickent, M. Cabezas, G. Djurašević, J. Petrović
We present the results of the study of the close binary UU Cassiopeiae based on previously published multi wavelength photometric and spectroscopic data. Based on eclipse timings of the last 117 years, we find an improved orbital period of $\rm P_{o}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d84310a377d1f1dd1583c3de6a3d911
http://arxiv.org/abs/2009.01352
http://arxiv.org/abs/2009.01352
Autor:
A. Borisova, B. Spassov, N. A. Tomov, Renada Konstantinova-Antova, S. Georgiev, R. K. Zamanov, R. Bogdanovski, M. Auruière, P. Petit, D. Kolev, H. Markov, Alexander Kurtenkov, M. Belcheva
Publikováno v:
AIP Conference Proceedings.
We present a spectral study of the single magnetically active K giant OP And in the period 1979 -- 2018, monitoring the variability of the activity indicator line H${\alpha}$. Original data obtained in the period 2015 -- 2018 with the echelle spectro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8382d0c10474632958f0144a95299922
https://doi.org/10.1063/1.5091217
https://doi.org/10.1063/1.5091217
Autor:
H. Markov, Grigor Nikolov
Publikováno v:
AIP Conference Proceedings.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72fc6ffec2ead35c9cee03002f15ed14
https://doi.org/10.1063/1.5091219
https://doi.org/10.1063/1.5091219
Publikováno v:
Astronomy & Astrophysics. 457:987-994
(Abridged) We provide empirical constraints on the different physical components that can act to yield temporal variability in predominantly or partially wind-formed optical lines of luminous OB stars, and thus potentially affect the reliable determi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::218826aa129625baefed34d849837848
https://doi.org/10.1051/0004-6361:20065114
https://doi.org/10.1051/0004-6361:20065114
Publikováno v:
Astronomy & Astrophysics. 413:693-709
We study mass-loss and wind momentum rates of 29 Galactic O-type stars with luminosity classes I, III and V by means of a pure Hα profile analysis and investigate to what extent the results compare to those originating from a state-of- the-art, comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdc77963183ac01e809f65148217db20
https://doi.org/10.1051/0004-6361:20031463
https://doi.org/10.1051/0004-6361:20031463
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 328:944-950
The physical parameters of the stars in the central region of the globular cluster M5 (NGC 5904) were determined from UBV photometry using Kurucz (1992) synthetic flux distributions and some empirical relations. It is found that the bluest horizontal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efd8b31212c0eb30b742cf51c169f412
https://doi.org/10.1046/j.1365-8711.2001.04920.x
https://doi.org/10.1046/j.1365-8711.2001.04920.x
Publikováno v:
Astronomy & Astrophysics. 376:898-906
We studied the long-term spectral and photometric behaviour of P Cygni over the 13.8 year interval from March 1985 to January 1999. The UBV photometry reveals a slow (7.4-year), low-amplitude (0.1 mag) variation in V in which the star becomes redder
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89590260875c22eebc61c2bf70b7be29
https://doi.org/10.1051/0004-6361:20010668
https://doi.org/10.1051/0004-6361:20010668
Publikováno v:
Astronomy & Astrophysics. 366:935-944
For the first time an extensive set of (quasi-) simultaneous photometric ( UBV ) and spectroscopic (H α line profiles) observations of P Cygni, covering a period from May, 1990 to June, 1994 was analyzed in terms of time variability. It is found tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47540fd7998aba514d2e778c565009cf
https://doi.org/10.1051/0004-6361:20000332
https://doi.org/10.1051/0004-6361:20000332