Spectroscopic study of the extremely fast rotating star 44 Geminorum

0388470 - ASÚ 2013 RIV BG eng J - Journal Article
Iliev, L. - Vennes, Stephane - Kawka, Adela - Kubát, Jiří - Németh, Péter - Borisov, G. - Kraus, Michaela
Spectroscopic study of the extremely fast rotating star 44 Geminorum.
Bulgarian astronomical journal. Roč. 18, č. 12012 (2012), s. 20-28. ISSN 1313-2709
R&D Projects: GA AV ČR(CZ) IAA300030908; GA AV ČR IAA301630901; GA ČR GAP209/10/0967
Institutional support: RVO:67985815
Keywords : Be stars * emission line * fundamental parameter
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics

Stars with extremely fast rotation represent interesting challenge to modern understanding of the stellar evolution. The reasons why such a spin-up process should occur during the evolution to otherwise normal star are still not well understood. Already in the beginning of the XX century Otto Struve proposed that fast rotation of the group of stars spectroscopically classified as Be could be the main reason for the formation of observed disks of circumstellar material around them. This circumstellar material is responsible for the emission lines observed in the spectrum of Be-stars as well as for the whole complex of spectral and photometrical patterns called in general Be-phenomenon.
Permanent Link: http://hdl.handle.net/11104/0217388