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M Dwarfs from Hubble Space Telescope Star Counts. V. The I-band Luminosity Function

Zheng Zheng, Chris Flynn, Andrew Gould, John N. Bahcall, Samir Salim

astro-pharXiv:astro-ph/0308359

Abstract

We derive the disk I-band luminosity function from the Zheng et al. sample of \~1400 disk M dwarfs observed with the Hubble Space Telescope. We adopt a Galactic-height-dependent color-magnitude relation to account for the metallicity gradient above the Galactic plane. The resultant I-band luminosity function peaks at MI~9.5 and drops sharply toward MI~10.5.

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