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

  • Authors: Peter Plavchan, M. Jura, J. Davy Kirkpatrick, Roc M. Cutri, and S. C. Gallagher

Plavchan et al. 2008 The Astrophysical Journal Supplement Series 175 191.

  • Provider: AAS Journals

Caption: Fig. 6.

For fields with SDSS DR5 coverage, we plot the average Cal‐PSWDB ﹩J-K_{s}﹩ color vs. SDSS r′ apparent magnitude. Photometric uncertainties are on average 1%–3% for both axes. In blue are targets identified as extragalactic by any one of the following: NED, the 2MASS XSC, and the SDSS star‐galaxy classification routine. The rest of the targets are displayed in red and are identified as STAR by the SDSS star‐galaxy classification routine. Most galaxies, not including unresolved quasars, AGN, etc., separate from Galactic sources with this choice of plotted parameters, qualitatively represented by the green dashed segmented line. An ﹩A_{v}=1﹩ interstellar reddening vector derived from Carpenter (2001), Cohen et al. (1981), and Schlegel et al. (1998) is shown in red. See § 3.2.3 for discussion.

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