Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...389l..83r&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 389, April 20, 1992, p. L83-L86. Research supported by DGICYT.
Astronomy and Astrophysics
Astrophysics
171
Brown Dwarf Stars, Molecular Spectra, Open Clusters, Stellar Mass, Stellar Spectra, Astronomical Spectroscopy, Charge Coupled Devices, Spectral Bands, Spectral Resolution
Scientific paper
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.
Magazzu Antonio
Martin Eduardo L.
Rebolo Rafael
No associations
LandOfFree
Spectroscopy of a brown dwarf candidate in the Alpha Persei open cluster does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spectroscopy of a brown dwarf candidate in the Alpha Persei open cluster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopy of a brown dwarf candidate in the Alpha Persei open cluster will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1733946