A UBV Photometric Survey of the Kepler Field

作者：Everett Mark E^*; Howell Steve B; Kinemuchi Karen

来源：Publications of the Astronomical Society of the Pacific, 2012, 124(914): 316-322.

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 4,416,007 sources in one or more of the U BV filters, including 1,861,126 sources detected in all three filters. The typical completeness limit is U similar to 18: 7, B similar to 19: 3, and V similar to 19: 1 mag, but varies by location. The area covered is 191 deg(2) 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.

• 出版日期2012-4