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New Photometry and Spectra of AB Doradus C: An Accurate Mass Determination of a Young Low-Mass Object with Theoretical Evolutionary TracksBased on observations made with ESO telescopes at the Paranal Observatories under program 276. C-5013.

Authors
  • Laird M, Close
  • Niranjan, Thatte
  • Eric Nielsen
  • Roberto, Abuter
  • Fraser, Clarke
  • Matthias, Tecza
Type
Published Article
Journal
The Astrophysical Journal
Publisher
American Astronomical Society
Publication Date
Aug 09, 2007
Volume
665
Issue
1
Pages
736–736
Source
SETI Institute
License
Unknown

Abstract

We present new photometric and spectroscopic measurements for the unique, young, low-mass evolutionary track calibrator AB Dor C. While the new K s photometry is similar to that we have previously published, the spectral type is found to be much earlier. Based on new H and K IFS spectra of AB Dor C from Thatte et al.(Paper I), we adopt a spectral type of M5. 5±1.0 for AB Dor C. This is considerably earlier than the M8±1 previously estimated by Close et al. and Nielsen et al. yet is consistent with the M6±1 ...

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