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Spectroscopy of Taurus cloud brown dwarf candidates

1991; IOP Publishing; Volume: 367; Linguagem: Inglês

10.1086/185923

1538-4357

J. R. Stauffer, T. Herter, Donald Hamilton, G. H. Rieke, Marcia Rieke, Ron Probst, W. J. Forrest,

Stellar, planetary, and galactic studies

view Abstract Citations (12) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Spectroscopy of Taurus Cloud Brown Dwarf Candidates Stauffer, John ; Herter, Terry ; Hamilton, Donald ; Rieke, George H. ; Rieke, Marcia J. ; Probst, Ron ; Forrest, William Abstract Low-dispersion optical spectra are obtained for six objects, and infrared spectra for two objects originally proposed to be brown dwarf members of the Taurus cloud population. None of the brown dwarf candidates shows definite H-alpha emission, and only two objects display molecular absorption bands. In one case, the weak TiO bands and H-alpha emission indicate a spectral type of K7-M0e, but these features may be caused by contamination from the nearby, bright primary HBC 370. In the other object, the TiO bands are definitely present but relatively weak indicating a spectral type of about M1-M2. These characteristics are unlike those expected for brown dwarfs; thus it appears that the brown dwarf candidates identified by Forrest et al. (1989) are much more likely to be heavily reddened background G or K field stars. Publication: The Astrophysical Journal Pub Date: January 1991 DOI: 10.1086/185923 Bibcode: 1991ApJ...367L..23S Keywords: Astronomical Spectroscopy; Brown Dwarf Stars; H Alpha Line; Infrared Spectroscopy; Taurus Constellation; Astronomical Photometry; Late Stars; Molecular Spectra; Near Infrared Radiation; Star Formation; Titanium Oxides; Astrophysics; STARS: FORMATION; STARS: LATE-TYPE; STARS: LOW-MASS full text sources ADS | data products SIMBAD (8)