A Study of the Diverse T Dwarf Population Revealed by WISE
Gregory N. Mace (UCLA, IPAC), J. Davy Kirkpatrick (IPAC), Michael C., Cushing (U. of Toledo), Christopher R. Gelino (IPAC), Roger L. Griffith, (IPAC), Michael F. Skrutskie (U. of Virginia), Kenneth A. Marsh (Cardiff, University), Edward L. Wright (UCLA)

TL;DR
This paper reports the discovery of 87 new T dwarfs using WISE, analyzes their spectral and photometric properties, and discusses atmospheric diversity and peculiar objects within this population.
Contribution
It presents a large new sample of T and Y dwarfs, introduces modified spectral classification methods, and provides insights into atmospheric conditions and diversity among brown dwarfs.
Findings
Tripled the number of known late-type T dwarfs
Identified diverse atmospheric conditions and cloud re-emergence
Discovered peculiar brown dwarfs and non-substellar objects
Abstract
We report the discovery of 87 new T dwarfs uncovered with the Wide-field Infrared Survey Explorer (WISE) and three brown dwarfs with extremely red near-infrared colors that exhibit characteristics of both L and T dwarfs. Two of the new T dwarfs are likely binaries with L7+/-1 primaries and mid-type T secondaries. In addition, our follow-up program has confirmed 10 previously identified T dwarfs and four photometrically-selected L and T dwarf candidates in the literature. This sample, along with the previous WISE discoveries, triples the number of known brown dwarfs with spectral types later than T5. Using the WISE All-Sky Source Catalog we present updated color-color and color-type diagrams for all the WISE-discovered T and Y dwarfs. Near-infrared spectra of the new discoveries are presented, along with spectral classifications. To accommodate later T dwarfs we have modified the…
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Taxonomy
TopicsStellar, planetary, and galactic studies · Spectroscopy and Laser Applications · Atmospheric Ozone and Climate
