Abstract
view Abstract Citations (223) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Spectroscopy of a Brown Dwarf Candidate in the alpha Persei Open Cluster Rebolo, Rafael ; Martin, Eduardo L. ; Magazzu, Antonio Abstract Intermediate-resolution spectroscopy in the range 625-775 nm is reported for a faint very-late-type object discovered in two CCD images taken near the center of the Alpha Per cluster. The spectrum shows strong absorption molecular bands, H-alpha emission, and KI absorption typical of late-M dwarfs; H-alpha varies conspicuously. The effective temperature and luminosity derived from the spectrum and R,I band photometry are consistent with those expected for an Alpha Per (age of about 50 Myr) 0.07 solar mass substellar object. In this object the lithium resonance line at 670.8 nm should be detectable with higher resolution, higher SNR data, and this line is a potentially powerful spectroscopic discriminant between very low mass stars and brown dwarfs close to the substellar mass limit. Publication: The Astrophysical Journal Pub Date: April 1992 DOI: 10.1086/186354 Bibcode: 1992ApJ...389L..83R Keywords: Brown Dwarf Stars; Molecular Spectra; Open Clusters; Stellar Mass; Stellar Spectra; Astronomical Spectroscopy; Charge Coupled Devices; Spectral Bands; Spectral Resolution; Astrophysics; STARS: INDIVIDUAL ALPHANUMERIC: AP 0323; 4853; STARS: LOW-MASS; BROWN DWARFS full text sources ADS | data products SIMBAD (5)
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