Title
Spectral analysis of high resolution near-infrared spectra of ultra cool dwarfs
Abbreviated Journal Title
Astron. Astrophys.
Keywords
line : identification; stars : atmospheres; stars : low-mass; brown; dwarfs; stars : late-type; POTENTIAL-ENERGY SURFACE; HYPERFINE-STRUCTURE; TEMPERATURE SCALE; BROWN; DWARFS; LINE LIST; SEQUENCE; WATER; STARS; TRANSITION; OPACITIES; Astronomy & Astrophysics
Abstract
Aims. We present an analysis of high resolution spectra in the J band of five ultra cool dwarfs from M6 to L0. Methods. We make use of a new ab initio water vapour line list and existing line lists of FeH and CrH for modelling the observations. Results. We find a good fit for the Mn I 12 899.76 angstrom line. This feature is one of the few for which we have a reliable oscillator strength. Other atomic features are present but most of the observed features are FeH and H(2)O lines. While we are uncertain about the quality of many of the atomic line parameters, the FeH and CrH line lists predict a number of features which are not apparent in our observed spectra. We infer that the main limiting factor in our spectral analysis is the FeH and CrH molecular spectra.
Journal Title
Astronomy & Astrophysics
Volume
473
Issue/Number
1
Publication Date
1-1-2007
Document Type
Article
Language
English
First Page
257
Last Page
264
WOS Identifier
ISSN
0004-6361
Recommended Citation
"Spectral analysis of high resolution near-infrared spectra of ultra cool dwarfs" (2007). Faculty Bibliography 2000s. 7390.
https://stars.library.ucf.edu/facultybib2000/7390
Comments
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