Published January 9, 2006
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Book Section - Chapter
H_2 Mid-IR Pure Rotational Emission from Young Stars: The TEXES/IRTF Survey
Abstract
We describe the TEXES survey for mid-IR H_2 pure rotational emission from young stars and report early successes. H_2 emission is a potential tracer of warm gas in circumstellar disks. Three pure rotational lines are available from the ground: the J=3 ⇒ 1, J=4 ⇒ 2, and J=6 ⇒ 4, transitions at 17.035 μm, 12.279 μm, and 8.025 μm, respectively. Using TEXES at the NASA IRTF 3m, we are midway through a survey of roughly 30 pre-main-sequence stars. To date, detected lines are all resolved, generally with FWHM<10 km/s. Preliminary analysis suggests the gas temperatures are between 400 and 800 K. From the work so far, we conclude that high spectral and spatial resolution are critical to the investigation of H_2 in disks.
Additional Information
© Springer-Verlag Berlin Heidelberg 2005. Support for this work comes from a Texas Advanced Research Program grant TARP 00365-0473-1999. MJR acknowledges grant USRA 8500-98-008 through the SOFIA program and NSF grant AST-0307497. This research has made use of NASA's Astrophysics Data System and the SIMBAD database operated at the Centre de Donnes astronomiques de Strasbourg, France.Additional details
- Alternative title
- H2 Mid-IR Pure Rotational Emission from Young Stars: The TEXES/IRTF Survey
- Eprint ID
- 98298
- DOI
- 10.1007/10995082_30
- Resolver ID
- CaltechAUTHORS:20190828-102317605
- 00365-0473-1999
- Texas Advanced Research Program
- 8500-98-008
- Universities Space Research Association
- AST-0307497
- NSF
- Created
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2019-08-28Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences
- Series Name
- ESO Astrophysics Symposia