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Near-infrared Variability in the 2MASS Calibration Fields: A Search for Planetary Transit CandidatesThe Two Micron All Sky Survey (2MASS) photometric calibration observations cover approximately 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(sub 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.
Document ID
20080044826
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Plavchan, Peter
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Jura, M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kirkpatrick, J. Davy
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Cutri, Roc M.
(California Univ. Los Angeles, CA, United States)
Gallagher, S. C.
(California Univ. Los Angeles, CA, United States)
Date Acquired
August 24, 2013
Publication Date
March 1, 2008
Publication Information
Publication: The Astrophysical Journal Supplement Series
Volume: 175
Subject Category
Astronomy
Distribution Limits
Public
Copyright
Other
Keywords
statistical methods
variable stars
eclipsing binaries
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