Bibcode
DOI
Martin, Eduardo L.
Referencia bibliográfica
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 105, no. 685, p. 277-280.
Fecha de publicación:
3
1993
Número de citas
8
Número de citas referidas
7
Descripción
The H-alpha emission star BD + 24 deg 676, formerly classified as a T
Tauri star and more recently as a Herbig Ae star, has been observed at
moderately high resolution in the red spectral region. The main results
are: the metallic lines over the wavelength range 6400-6750 A have
equivalent widths comparable to early G stars; the radial velocity is
not consistent with that of members of Taurus-Auriga; the lithium
abundance is much lower than expected for a T Tauri star; H-alpha has a
changing complex profile. The data do not appear to be compatible with
the hypothesis that BD + 24 deg 676 is a premain-sequence star. The
properties can be qualitatively understood if it is a close binary
composed by a cool postmain-sequence subgiant and a hot main-sequence
star, although more data are needed to clarify its nature.