D. Kolev
Bulgarian Academy of Sciences
17 Papers
96 Citations
D. Kolev is an academic researcher from Bulgarian Academy of Sciences. The author has contributed to research in topics: Eclipse & Giant star. The author has an hindex of 6, co-authored 17 publications.
Chat about Author
Papers
Lithium and magnetic fields in giants. HD 232 862 : a magnetic and lithium-rich giant star. ⋆
Agnès Lèbre,Ana Palacios,J. D. do,Nascimento,Renada Konstantinova-Antova,D. Kolev,J. R. De Medeiros +6 more
TL;DR: In this article, the authors reported the detection of an unusually high lithium content in HD 232 862, a field giant classified as a G8II star, and hostin g a magnetic field.
Lithium and magnetic fields in giant stars - HD 232 862: a magnetic and lithium-rich giant
Agnès Lèbre,Ana Palacios,J. D. do Nascimento,Renada Konstantinova-Antova,D. Kolev,Michel Aurière,P. de Laverny,J. R. De Medeiros +7 more
TL;DR: In this article, the authors reported the detection of an unusually high lithium content in HD 232 862, a field giant classified as a G8II star, and hosting a magnetic field.
The 2003 eclipse of EE Cep is coming. A review of past eclipses
TL;DR: In this article, a model of a precessing optically thick disc, inclined to the plane of the binary orbit, is invoked to explain the changes of its spatial orientation, defined by the inclination of the disc and the tilt, induced most probably by precession of the spin axis with a period of about 50 years.
International observational campaigns of the last two eclipses in EE Cephei: 2003 and 2008/9
Cezary Galan,Maciej Mikolajewski,Toma Tomov,Dariusz Graczyk,G. Apostolovska,I. Barzova,I. Bellas-Velidis,B. Bilkina,R. M. Blake,C. T. Bolton,A. Bondar,Luboš Brát,T. Brozek,B. Budzisz,M. Cikala,B. Csak,A. Dapergolas,Dinko Dimitrov,P. Dobierski,Michal Drahus,Marek Drozdz,S. Dvorak,L. Elder,S. Frcakowiak,G. Galazutdinov,Kosmas Gazeas,L. Georgiev,B. Gere,Krzysztof Goździewski,V. P. Grinin,M. Gromadzki,M. Hajduk,T. A. Heras,J. Hopkins,I. Iliev,J. Janowski,R. Kocián,Z. Kołaczkowski,D. Kolev,G. Kopacki,J. Krzesinski,H. Kucakova,E. Kuligowska,T. Kundera,M. Kurpinska-Winiarska,Agnieszka Kuźmicz,Alexios Liakos,T. A. Lister,Gracjan Maciejewski,A. Majcher,A. Majewska,P. M. Marrese,G. Michalska,Cezary Migaszewski,Ian Miller,U. Munari,F. A. Musaev,G. Myers,A. Narwid,Péter Németh,P. Niarchos,E. Niemczura,Waldemar Ogloza,Yenal Ogmen,Arto Oksanen,J. Osiwala,Stoyanka Peneva,Andrzej Pigulski,V. Popov,Wojtek Pych,J. Pye,E. Ragan,Boudewijn F. Roukema,P. Różański,Evgeni Semkov,Michal Siwak,Bart Staels,Ivanka Stateva,H. C. Stempels,M. Stȩślicki,E. Świerczyński,T. Szymanski,N. A. Tomov,Wacław Waniak,M. Wieȩk,M. Winiarski,P. Wychudzki,A. Zajczyk,Staszek Zola,Tomaz Zwitter +89 more
TL;DR: In this article, two blue maxima in the colour indices were detected during these two eclipses, one before and one after the photometric minimum, and the first (stronger) blue maximum is simultaneous with a "bump" that is very clear in all the UBVRI light curves.
Magnetic activity in stars on the giant branches: Twenty years of observations
Renada Konstantinova-Antova,Michel Aurière,C. Charbonnel,Gregg A. Wade,D. Kolev,A. P. Antov,Svetla Tsvetkova,Klaus-Peter Schröder,Natalia A. Drake,Pascal Petit,J. R. De Medeiros,Agnès Lèbre,B. E. Zhilyaev,I. A. Verlyuk,O. A. Svyatogorov,R. E. Gershberg,M. N. Lovkaya,R. Bogdanovski,I. K. Stateva,R. Cabanac,S. Avgoloupis,Michael E. Contadakis,John H. Seiradakis +22 more
- 01 Jan 2013
8