Near-infrared variability in the 2MASS calibration fields: a search for planetary transit candidates
Abstract
The Two Micron All Sky Survey (2MASS) photometric calibration observations cover ~6 square degrees on the sky in 35 "calibration fields", each sampled in nominal photometric conditions between 562 and 3692 times during the 4 years of the 2MASS mission. We compile a catalog of variables from the calibration observations to search for M dwarfs transited by extrasolar planets. We present our methods for measuring periodic and nonperiodic flux variability. From 7554 sources with apparent K_s magnitudes between 5.6 and 16.1, we identify 247 variables, including extragalactic variables and 23 periodic variables. We have discovered three M dwarf eclipsing systems, including two candidates for transiting extrasolar planets.
Additional Information
© 2008 The American Astronomical Society. Received 2007 February 8; accepted 2007 September 7. This publication makes extensive use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This publication makes use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has made use of the NASA/ IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This publication makes use of the Sloan Digital Sky Survey, Data Release 5 (available online at http://www.sdss.org). Thanks to Karen Peterson, Thayne Currie, Robert Hurt, Eric Feigelson, and our anonymous referee for their conversations and comments. Parts of the research described in this publication was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.Attached Files
Published - PLAapjss08.pdf
Files
| Name | Size | Download all |
|---|---|---|
|
md5:0affe90c6d193a70c877cf3e1354bc76
|
4.8 MB | Preview Download |
Additional details
- Eprint ID
- 14280
- Resolver ID
- CaltechAUTHORS:20090520-140032352
- NASA
- NSF
- Created
-
2009-08-26Created from EPrint's datestamp field
- Updated
-
2021-11-08Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)