WOLF, Marek, Ladislav ŠMELCER, Hana KUČÁKOVÁ, Tomáš HYNEK, Kateřina ONDERKOVÁ, Petr SVOBODA and Marek CHRASTINA. Rapid apsidal motion in V381 Cassiopeiae. New Astronomy. 2010, vol. 15, No 6, p. 530-532. ISSN 1384-1076.
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Basic information
Original name Rapid apsidal motion in V381 Cassiopeiae
Name in Czech Rapidní apsidální pohyb ve V381 Cassiopeiae
Authors WOLF, Marek (203 Czech Republic, guarantor), Ladislav ŠMELCER (203 Czech Republic), Hana KUČÁKOVÁ (203 Czech Republic), Tomáš HYNEK (203 Czech Republic), Kateřina ONDERKOVÁ (203 Czech Republic), Petr SVOBODA (203 Czech Republic) and Marek CHRASTINA (703 Slovakia).
Edition New Astronomy, 2010, 1384-1076.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher Netherlands
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 1.632
RIV identification code RIV/00216224:14310/10:00040568
Organization unit Faculty of Science
UT WoS 000277751400005
Keywords in English binaries; eclipsing binaries; V381 Cas; fundamental parameters
Tags binaries, Eclipsing Binaries, fundamental parameters, V381 Cas
Tags International impact, Reviewed
Changed by Changed by: Mgr. Marek Chrastina, Ph.D., učo 183145. Changed: 30/8/2010 10:13.
Abstract
V381 Cas is a relatively bright and early-type eclipsing binary system. Several new times of its eclipses were measured as part of our long-term observational project of eccentric eclipsing binaries. Based on a current O-C diagram solution, we found for the first time that its orbit is slightly eccentric (e = 0.025) and shows a very rapid apsidal advance with short period of about 20 years only. The relativistic and third body effects are negligible, being about 3% of the total apsidal motion rate.
Abstract (in Czech)
V381 Cas je relativně jasný zákrytový systém ranního typu. V rámci dlouhodobého sledování excentrických zákrytových dvojhvězd jsme změřili několik nových minim. Na základě řešení O-C diagramu jsme jako prví zjistili, že jeho orbita je mírne excentrická (e = 0,025) a vykazuje velmi rapidní apsidální pohyb s periodou pouze 20 let. Relativistické efekty a vplyv tretieho telesa jsou zanedbatelné, čítajíc pouze asi 3% celkového apsidálního pohybu.
Links
IAA301630901, research and development projectName: Rozložení energie ve spektru horkých hvězd a jeho proměnnost
Investor: Academy of Sciences of the Czech Republic, Spectral energy distribution of hot stars and its variability
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