A Deep Multicolor Survey V: The M Dwarf Luminosity Function

Details A Deep Multicolor Survey V: The M Dwarf Luminosity Function A Deep Multicolor Survey V: The M Dwarf Luminosity Function

1998-08-04

arxiv.org/abs/astro-ph/9808028v1

Astron.J. 116 (1998) 2513-2519

Astronomy and Astrophysics

Astrophysics

Accepted for publication in AJ. 19 pages including 4 embedded postscript figures (AASTEX)

Scientific paper

10.1086/300605

We present a study of M dwarfs discovered in a large area, multicolor survey. We employ a combination of morphological and color criteria to select M dwarfs to a limiting magnitude in V of 22, the deepest such ground-based survey for M dwarfs to date. We solve for the vertical disk stellar density law and use the resulting parameters to derive the M dwarf luminosity and mass functions from this sample. We find the stellar luminosity function peaks at M_V = 12 and declines thereafter. Our derived mass function for stars with M < 0.6 M_sun is inconsistent with a Salpeter function at the 3 sigma level; instead, we find the mass function is relatively flat for 0.6 M_sun > M > 0.1 M_sun.

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