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.