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Using L dwarfs with distances to test models

Published online by Cambridge University Press:  26 February 2013

Youfen Wang ,
H. R. A. Jones ,
R. L. Smart  and
Z. Shao
Youfen Wang
Affiliation:
Shanghai Astronomical Observatory, 80 Nandan Road, Shanghai 200030, China email: youfenwang@shao.ac.cn Graduate University of the Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
H. R. A. Jones
Affiliation:
University of Hertfordshire, Hatfield AL10 9AB, UK
R. L. Smart
Affiliation:
Osservatorio Astrofisico di Torino, Strada Osservatorio 20, 10025 Pino Torinese, Italy
Z. Shao
Affiliation:
Shanghai Astronomical Observatory, 80 Nandan Road, Shanghai 200030, China email: youfenwang@shao.ac.cn
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Abstract

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We test two contemporary low-mass atmospheric models using three L dwarfs with distances and published spectra. We find that the two models do not predict the same trends for temperature, gravity and metallicity in absorption lines. We find that one model appears to better reflect the temperature, but this sample is too small to investigate the other parameters in depth.

Keywords

stars: low-massbrown dwarfsstars: distances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S289: Advancing the Physics of Cosmic Distances , August 2012 , pp. 425 - 428
Copyright
Copyright © International Astronomical Union 2013

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