Fundamental stellar and accretion disc parameters of the eclipsing binary DQ Velorum
نویسندگان
چکیده
منابع مشابه
Accurate fundamental parameters of eclipsing binary stars
The study of detached eclipsing binaries is one of the most powerful ways to investigate the properties of individual stars and stellar systems. We present preliminary masses, radii and effective temperatures for the eclipsing binary WWAurigae, which is composed of two metallic-lined A-type stars. We also reanalyse the data on HD23642, an A-type eclipsing binary member of the Pleiades open clus...
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Context. The stellar system δVel contains the brightest eclipsing binary in the southern sky (δVel A), and a nearby third star located ≈ 0.6′′ away (δVel B). The proximity of δVel B (usable as a reference) makes it a particularly well-suited target to detect the astrometric displacement of the center of light of the eclipsing pair. Aims. We obtained NACO astrometric observations with two goals:...
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In this paper we derive stellar parameters for the Wolf-Rayet star in the γ Velorum binary system (WR11), from a detailed non-LTE model of its optical and infrared spectra. Compared to the study of Schaerer et al., the parameters of the WC8 star are revised to a hotter effective temperature (Teff ∼ 57 kK), a higher luminosity (log(L/L⊙) = 5.00), and a lower mass loss rate (log(Ṁ / M⊙/yr) = –5.0...
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I present a discussion of fundamental stellar parameters and their observational determination in the context of interferometric measurements with current and future optical/infrared interferometric facilities. Stellar parameters and the importance of their determination for stellar physics are discussed. One of the primary uses of interferometry in the field of stellar physics is the measureme...
متن کاملStellar capture by an accretion disc
AB S TRACT The long-term evolution of a stellar orbit captured by a massive galactic centre via successive interactions with an accretion disc has been examined. An analytical solution describing the evolution of the stellar orbital parameters during the initial stage of the capture has been found. Our results are applicable to thin Keplerian discs with an arbitrary radial distribution of densi...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2013
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201220230