Circularization in B-type eclipsing binaries in the Magellanic Clouds

Autor:	Pierre North, J.-P. Zahn
Rok vydání:	2003
Předmět:	Physics Stellar mass Metallicity Astronomy Astronomy and Astrophysics Astrophysics Radius Type (model theory) Surface gravity Space and Planetary Science Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Critical radius Astrophysics::Galaxy Astrophysics
Zdroj:	Astronomy & Astrophysics. 405:677-684
ISSN:	1432-0746 0004-6361
DOI:	10.1051/0004-6361:20030571
Popis:	Making use of detached eclipsing binaries discovered by the OGLE and MACHO teams in the SMC and in the LMC respectively, we give the value of the fractional radius above which circularization occurs. We show that this critical radius is consistent with that found for galactic binaries by Giuricin et al. (1984) and does not, therefore, depend strongly on metallicity. This conclusion is consistent with Zahn's (1975) theory of tidal dissipation. The critical radius seems slightly larger in the SMC than in the LMC, but this small difference is hardly significant and should be confirmed by a larger sample. We also explore empirically to what extent the critical radius might depend on stellar mass and surface gravity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b6c29899f72c6d8891faa25f0b1a3555 https://doi.org/10.1051/0004-6361:20030571 Zobrazit plný text záznamu