Mid-infrared Observations of Brown Dwarfs and their Disks: First Ground-based Detection

Details Mid-infrared Observations of Brown Dwarfs and their Disks: First Ground-based Detection Mid-infrared Observations of Brown Dwarfs and their Disks: First Ground-based Detection

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cokon.103...93a&link_type=abstract

Communications of the Konkoly Observatory, Hungary Proceedings of the conference: 'The interaction of stars with their environme

Physics

Scientific paper

We present the first mid-infrared (MIR) detection of a field brown dwarf (BD) and the first ground-based MIR measurements of a disk around a young BD candidate. We prove the absence of warm dust surrounding the field BD LP 944-20. In the case of the young BD candidate Cha Hα2, we find clear evidence for thermal dust emission from a disk. Surprisingly, the object does not exhibit any silicate feature as previously predicted. We show that the flat spectrum can be explained by an optically thick flat dust disk.

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