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Ultracool Neighbors from 2MASS

Published online by Cambridge University Press:  26 May 2016

Kelle L. Cruz ,
I. Neill Reid ,
P. J. Lowrance ,
J. Davy Kirkpatrick ,
J. Liebert ,
N. Gorlova  and
C. Cooper
Kelle L. Cruz
Affiliation:
University of Pennsylvania, 209 S. 33rd St., Philadelphia, PA 19104
I. Neill Reid
Affiliation:
STScI, 3700 San Martin Dr., Baltimore, MD 21218
P. J. Lowrance
Affiliation:
IPAC, CalTech, Pasadena, CA 91125
J. Davy Kirkpatrick
Affiliation:
IPAC, CalTech, Pasadena, CA 91125
J. Liebert
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721
N. Gorlova
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721
C. Cooper
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721

Abstract

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We present initial results of an all-sky search for cool, low-mass stars and brown dwarfs within 20 pc. We have used the near-infrared photometry provided by the 2-Micron All Sky Survey (2MASS) Second Incremental Data Release to create a target list of 1793 candidates with 6 < J < 17 and J – K > 1. Follow-up observations and existing data have enabled over 85% of the sample to be classified. Spectral types and distances have been derived for over 250 nearby dwarfs, including 39 newly discovered L dwarfs. In this poster, we discuss our selection methods and present preliminary results.

Type
Part 5. Imaging Searches for Mature Ultracool Dwarfs
Information
Symposium - International Astronomical Union , Volume 211: Brown Dwarfs , 2003 , pp. 201 - 202
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Cruz, K. L. & Reid, I. N. 2002, AJ, 123, 2828 CrossRefGoogle Scholar
Kirkpatrick, J. D. et al. 1999, ApJ, 519, 802 CrossRefGoogle Scholar
Kirkpatrick, J. D. et al. 2000, AJ, 120, 447 CrossRefGoogle Scholar