A Deep Multicolor Survey. V. The M Dwarf Luminosity Function | Zendy

Paul Martini | Zendy; Patrick S. Osmer | Zendy

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A Deep Multicolor Survey. V. The M Dwarf Luminosity Function

Author(s) -

Paul Martini,

Patrick S. Osmer

Publication year - 1998

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/300605

Subject(s) - luminosity function , physics , astrophysics , luminosity , brown dwarf , stars , function (biology) , initial mass function , limiting , stellar mass , mass to light ratio , galaxy , star formation , engineering , mechanical engineering , evolutionary biology , biology

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 dwarfsto a limiting magnitude in V of 22, the deepest such ground-based survey for Mdwarfs to date. We solve for the vertical disk stellar density law and use theresulting parameters to derive the M dwarf luminosity and mass functions fromthis sample. We find the stellar luminosity function peaks at M_V = 12 anddeclines thereafter. Our derived mass function for stars with M < 0.6 M_sun isinconsistent with a Salpeter function at the 3 sigma level; instead, we findthe mass function is relatively flat for 0.6 M_sun > M > 0.1 M_sun.Comment: Accepted for publication in AJ. 19 pages including 4 embedded postscript figures (AASTEX

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