Discovery of Two Peculiar L Dwarfs from the 2MASS Proper Motion Survey: Young or Dirty?

Details Discovery of Two Peculiar L Dwarfs from the 2MASS Proper Motion Survey: Young or Dirty? Discovery of Two Peculiar L Dwarfs from the 2MASS Proper Motion Survey: Young or Dirty?

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21110314l&link_type=abstract

American Astronomical Society, AAS Meeting #211, #103.14; Bulletin of the American Astronomical Society, Vol. 39, p.921

Astronomy and Astrophysics

Astronomy

Scientific paper

We present nearly complete 0.6-14.5 micron spectroscopy of two bright mid-to-late type L dwarfs discovered during the course of our 2MASS proper motion search, which uses multi-epoch 2MASS observations covering 4700 square degrees of sky. Both of these objects have markedly red J-Ks colors, excess flux at L-band, silicate absorption at 9 microns, and a slight triangular-shaped H-band morphology. We examine possible scenarios to explain these features.

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