Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...212.1104h&link_type=abstract
American Astronomical Society, AAS Meeting #212, #11.04; Bulletin of the American Astronomical Society, Vol. 40, p.204
Astronomy and Astrophysics
Astronomy
Scientific paper
The luminosity function of low luminosity red stars is import due to the high frequency of such stars and their substantial contribution to the mass of baryonic matter as determined by analysis of the numbers of such stars within a few parsecs of the Sun. Many such stars relatively close to the Sun have not been detected due to their low luminosity and to an inability to distinguish between red giant and dwarf stars. A sample of one hundred potential red dwarf stars was selected from 2MASS photometric data, and USNO-B photometric and astrometric data. Sample stars were observed using the SARA (Southeastern Association for Research in Astronomy) telescope using Kron-Cousins RI photometry and intermediate-band CaH photometry. All thirty two sample stars observed have luminosity classes consistent with red dwarfs. The photometric parallaxes range from 40 to 230 pc. A comparison of USNO-B R magnitudes and the observed CCD R magnitudes (observed - USNO) indicated no systematic difference (-0.03 with and standard error of the mean of 0.05). A comparison of the R-I color index showed a mean difference of -0.21 and standard error of the mean of 0.03. The selection criterion used seems to be quite efficient in identifying red dwarf stars. This study used data collected with the SARA Telescope and was funded by grants from the Indiana Space Grant Consortium and Ball State University.
Humphrey Nick
Robertson Thomas
No associations
LandOfFree
Photometric Parallaxes for Red Dwarf Stars 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 Photometric Parallaxes for Red Dwarf Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometric Parallaxes for Red Dwarf Stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1395200