Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jsara...2....2m&link_type=abstract
Journal of the Southeastern Association for Research in Astronomy, vol. 2, p. 2-5
Astronomy and Astrophysics
Astronomy
Stars: Luminosity Function And Mass Function
Scientific paper
This paper presents the photometric luminosity classification of M dwarfs in Kaptyn's Selected Area 109 (SA109) as part of an ongoing program at Ball State University to probe low luminosity star contributions to the luminosity function. The reduction of data taken at the Southeastern Association for Research in Astronomy (SARA) telescope is still in the initial phases, but comparisons of this data to previous data from the National Undergraduate Research Observatory (NURO) and the Ball State Observatory (BSO) show that the classification results are consistent. With a limiting magnitude of R=15.25, we have observed nearly half of a square degree in SA109 and have detected approximately 74 percent of the expected M dwarfs, as determined by the luminosity function. The 26 M dwarfs which have been identified using R, I and CaH photometry, are confirmed using 2MASS J, H an K magnitudes. We present the detections of 17±4.1 early type M dwarfs in half of SA109, compared to the expected value of 16±$4 for the entire region as determined the accepted luminosity function.
Jordan Thomas M.
Mace Gregory N.
Robertson Thomas H.
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