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

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Abstract

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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  1. Ya.V. Pavlenko
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Pavlenko, Y. Analysis of the Spectra of Two Pleiades Brown Dwarfs: Teide 1 and Calar 3. Astrophysics and Space Science 253, 43–53 (1997). https://doi.org/10.1023/A:1000584320988

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