Cool Star Science with the FIRE Spectrograph

Details Cool Star Science with the FIRE Spectrograph Cool Star Science with the FIRE Spectrograph

2010-12-07

arxiv.org/abs/1012.1624v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

8 pages in ASP format, contribution to Proceedings of the 16th Cool Stars, Stellar Systems and the Sun (eds. C. Johns-Krull, M

Scientific paper

The Folded-port InfraRed Echellette (FIRE) has recently been commissioned on the Magellan 6.5m Baade Telescope. This single object, near-infrared spectrometer simultaneously covers the 0.85-2.45 micron window in both cross-dispersed (R ~ 6000) or prism-dispersed (R ~ 250-350) modes. FIRE's compact configuration, high transmission optics and high quantum efficiency detector provides considerable sensitivity in the near-infrared, making it an ideal instrument for studies of cool stars and brown dwarfs. Here we present some of the first cool star science results with FIRE based on commissioning and science verification observations, including evidence of clouds in a planetary-mass brown dwarf, accretion and jet emission in the low-mass T Tauri star TWA 30B, radial velocities of T-type brown dwarfs, and near-infrared detection of a debris disk associated with the DAZ white dwarf GALEX 1931+01.

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