Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-08-14
Astronomy and Astrophysics
Astrophysics
To appear in IAU Symposium Volume 211 "Brown Dwarfs", ASP Conference Series, 2003, ed. E. Martin. 5 postscript pages
Scientific paper
We present an analysis of low-resolution infrared spectra for 25 brown dwarf candidates in the NGC 1333 molecular cloud. Candidates were chosen on the basis of their association with the high column density cloud core, and near-infrared fluxes and colors. We compare the depths of water vapor absorption bands in our candidate objects with a grid of dwarf, subgiant, and giant standards to determine spectral types which are independent of reddening. These data are used to derive effective temperatures and bolometric luminosities which, when combined with theoretical tracks and isochrones for pre-main sequence objects, enable us to estimate masses and ages. Depending on the models considered, a total of 9 to 20 brown dwarfs are identified with a median of age of < 1 Myr.
Carlson Glenn
Greene Thomas
Meyer Michael
Mikhail Ayman
Wilking Bruce
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