Near-Infrared Variability in the 2MASS Calibration Fields: A Search for Planetary Transit Candidates

Details Near-Infrared Variability in the 2MASS Calibration Fields: A Search for Planetary Transit Candidates Near-Infrared Variability in the 2MASS Calibration Fields: A Search for Planetary Transit Candidates

2007-09-08

arxiv.org/abs/0709.1182v1

Astronomy and Astrophysics

Astrophysics

The Astrophysical Journal Supplement, in press; figures compressed

Scientific paper

10.1086/523644

The 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 four years of the 2MASS mission. We compile a catalog of variables from the calibration observations to search for M dwarfs transited by extra-solar planets. We present our methods for measuring periodic and non-periodic flux variability. From 7554 sources with apparent Ks 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.

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