A UBV Photometric Survey of the Kepler Field

Details A UBV Photometric Survey of the Kepler Field A UBV Photometric Survey of the Kepler Field

2012-02-24

arxiv.org/abs/1202.5565v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

19 pages, 6 figures, in press at PASP

Scientific paper

We present the motivations for and methods we used to create a new ground-based photometric survey of the field targeted by the NASA Kepler Mission. The survey contains magnitudes for 4414002 sources in one or more of the UBV filters, including 1862902 sources detected in all three filters. The typical completeness limit is U~18.7, B~19.3, and V~19.1 magnitudes, but varies by location. The area covered is 191 square degrees and includes the areas on and between the 42 Kepler CCDs as well as additional areas around the perimeter of the Kepler field. The major significance of this survey is our addition of U to the optical bandpass coverage available in the Kepler Input Catalog, which was primarily limited to the redder SDSS griz and D51 filters. The U coverage reveals a sample of the hottest sources in the field, many of which are not currently targeted by Kepler, but may be objects of astrophysical interest.

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