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Published August 2012 | Published
Journal Article Open

The Palomar Transient Factory photometric catalog 1.0

Abstract

We constructed a photometrically calibrated catalog of non-variable sources from the Palomar Transient Factory (PTF) observations. The first version of this catalog presented here, the PTF photometric catalog 1.0, contains calibrated R_PTF-filter magnitudes for ≈2.1 × 10^7 sources brighter than magnitude 19, over an area of ≈11,233 deg^2. The magnitudes are provided in the PTF photometric system, and the color of a source is required in order to convert these magnitudes into other magnitude systems. We estimate that the magnitudes in this catalog have a typical accuracy of about 0.02 mag with respect to magnitudes from the Sloan Digital Sky Survey. The median repeatability of our catalog's magnitudes for stars between 15 and 16 mag, is about 0.01 mag and it is over 0.03 mag for 95% of the sources in this magnitude range. The main goal of this catalog is to provide reference magnitudes for photometric calibration of visible light observations. Subsequent versions of this catalog, which will be published incrementally online, will be extended to cover a larger sky area and will also include g_PTF-filter magnitudes, as well as variability and proper-motion information.

Additional Information

© 2012 The Astronomical Society of the Pacific. Received 2012 February 28; accepted 2012 June 05; published 2012 August 29. We thank an anonymous referee for constructive comments. This article is based on observations obtained with the Samuel Oschin Telescope as part of the Palomar Transient Factory project, a scientific collaboration between the California Institute of Technology, Columbia University, Las Cumbres Observatory, the Lawrence Berkeley National Laboratory, the National Energy Research Scientific Computing Center, the University of Oxford, and the Weizmann Institute of Science. E. O. O. is the incumbent of the Arye Dissentshik career development chair and is grateful for support via a grant from the Israeli Ministry of Science, and the Helen Kimmel Center for Planetary Science. S. R. K. and his group are partially supported by NSF grant AST-0507734.

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Created:
August 19, 2023
Modified:
October 19, 2023