Discovery of a nearby M9 dwarf

Details Discovery of a nearby M9 dwarf Discovery of a nearby M9 dwarf

2005-10-21

arxiv.org/abs/astro-ph/0510639v2

Mon.Not.Roy.Astron.Soc.Lett.366:L40,2006

Astronomy and Astrophysics

Astrophysics

revised version, accepted by MNRAS Letters

Scientific paper

10.1111/j.1745-3933.2005.00128.x

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.

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