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Low-Luminosity Companions to Nearby Stars: Status of the 2MASS Data Search

  • Conference paper
Ultracool Dwarfs

Abstract

We present 2MASS discoveries of four L and T dwarf companions to nearby stars. Using spectral types of the companions and age estimates of the primaries, we estimate masses for these discoveries and compare them to four other L and T dwarf companions from the literature. Temperatures range from ~2000 to ~750 K, ages range from ~0.2 to ~3 Gyr, and masses range from ~0.035 to ~0.075 MO.

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Author information

Authors and Affiliations

  1. Infrared Processing and Analysis Center, M/S 100-22, Pasadena, CA, 91125, USA

    J.D. Kirkpatrick & J.E. Gizis

  2. Division of Physics, M/S 103-33, California Institute of Technology, Pasadena, CA, 91125, USA

    A.J. Burgasser

  3. Space Sciences, Cornell University, Ithaca, NY, 14853, USA

    J.C. Wilson

  4. US Naval Observatory, Flagstaff Station, P.O. Box 1149, Flagstaff, AZ, 86002, USA

    C.C. Dahn & D.G. Monet

  5. Department of Physics and Astronomy, University of Pennsylvania, 209 S. 33rd Street, Philadelphia, PA, 19104, USA

    I.N. Reid

  6. Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ, 85721, USA

    J. Liebert

Authors
  1. J.D. Kirkpatrick
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  2. J.E. Gizis
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  3. A.J. Burgasser
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  4. J.C. Wilson
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  5. C.C. Dahn
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  6. D.G. Monet
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  7. I.N. Reid
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  8. J. Liebert
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Editor information

Editors and Affiliations

  1. Astrophysics Research Institute, TwelveQuays House, Egerton Wharf, Birkenhead, CH41 1LD, UK

    Hugh R. A. Jones  & Iain A. Steele  & 

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© 2001 Springer-Verlag Berlin Heidelberg

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Kirkpatrick, J. et al. (2001). Low-Luminosity Companions to Nearby Stars: Status of the 2MASS Data Search. In: Jones, H.R.A., Steele, I.A. (eds) Ultracool Dwarfs. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-56672-1_12

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  • DOI: https://doi.org/10.1007/978-3-642-56672-1_12

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-62682-1

  • Online ISBN: 978-3-642-56672-1

  • eBook Packages: Springer Book Archive

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