Discovery of a nearby M9 dwarf
Astrophysics
2009-11-13 v2
Abstract
We report the discovery of a new M9.0 dwarf at only 8.2 pc, which we identified in our search for nearby ultracool dwarf (I-J >= 3.0, later than M8.0) in the DENIS database. We measure a very high proper motion of 2.5 arc-sec/yr. The PC3 index measured from its low-resolution spectrum gives a spectrophotometric distance of 8.2 pc. This makes it the third closest M9.0 dwarf.
Cite
@article{arxiv.astro-ph/0510639,
title = {Discovery of a nearby M9 dwarf},
author = {N. Phan-Bao and M. S. Bessell and E. L. Martin and G. Simon and J. Guibert and T. Forveille and X. Delfosse and F. Crifo and N. Epchtein and P. Wood and F. Tajahmady},
journal= {arXiv preprint arXiv:astro-ph/0510639},
year = {2009}
}
Comments
revised version, accepted by MNRAS Letters