Analysis of the Spectra of Two Pleiades Brown Dwarfs: Teide 1 and Calar 3

Details Analysis of the Spectra of Two Pleiades Brown Dwarfs: Teide 1 and Calar 3 Analysis of the Spectra of Two Pleiades Brown Dwarfs: Teide 1 and Calar 3

Sep 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ap%26ss.253...43p&link_type=abstract

Astrophysics and Space Science, Volume 253, Issue 1, pp.43-53

Astronomy and Astrophysics

Astrophysics

32

Scientific paper

Results of the numerical simulation of spectra of the Pleiades brown dwarfs Calar 3 and Teide 1 are discussed. Synthetical spectra were computed for several model atmospheres from a grid of Allard and Hauschildt (1995). From the comparison of computed and observed spectra we have found that: - the spectrum of Teide 1 may be reasonably well fitted by JOLA in the visible region, including the spectral regions around the Li I lines at λλ 670.8 and 812.6 nm. - The structure of absorption bands observed in the spectrum of Teide 1 and Calar 3 depends mainly on Teff. The dependence on gravity is much weaker. - A comparison of observed and computed spectra shows that effective temperatures of these Pleiades brown dwarfs is Teff ≈ 2900 K.

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