SIMBAD references

2011ApJ...743..109S - Astrophys. J., 743, 109 (2011/December-3)

Hunting the coolest dwarfs: methods and early results.


Abstract (from CDS):

We present the methods and first results of a survey of nearby high proper motion main-sequence stars to probe for cool companions with the Gemini camera at Lick Observatory. This survey uses a sample of old (age > 2 Gyr) stars as targets to probe for companions down to temperatures of 500 K. Multi-epoch observations allow us to discriminate comoving companions from background objects. So far, our survey has successfully rediscovered the wide T8.5 companion to GJ 1263 and has discovered a companion to the nearby M0V star GJ 660.1. The companion to GJ 660.1 (GJ 660.1B) is ∼4 mag fainter than its host star in the J-band and is located at a projected separation of ∼120 AU. Known trigonometric parallax and Two Micron All Sky Survey magnitudes for the GJ 660.1 system indicate a spectral type for the companion of M9±2.

Abstract Copyright:

Journal keyword(s): brown dwarfs - stars: low-mass

Simbad objects: 55

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