Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...282l..21c&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 282, no. 2, p. L21-L24
Astronomy and Astrophysics
Astrophysics
19
Eclipsing Binary Stars, Orbital Elements, Radial Velocity, Stellar Envelopes, Stellar Spectra, Charge Coupled Devices, Metallicity, Size Determination, Spectroscopic Analysis, Stellar Luminosity, Stellar Mass, Stellar Rotation, Stellar Temperature
Scientific paper
We present high resolution spectra of the Herbig star TY CrA in the Na I doublet region. The spectroscopic binary nature SB2 of this star, known to be the member of a close eclipsing binary system, which was tentatively proposed in a previous paper is here confirmed. The radial velocity curves of both components of the system are built as the function of phase. This allows us to derive directly for the first time the masses for the primary and the secondary, 2.8 +/- 0.2 solar mass and 1.5 +/- 0.1 solar mass respectively. Other parameters R*, L*, T* of both objects are derived. All these data are discussed, as well as the measured rotational velocity of the secondary (v sin i = 100 km/s).
Bouvier Jerome
Corporon Patrice
Lagrange Anne Marie
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