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Published April 2020 | Accepted Version + Published
Journal Article Open

The CatWISE Preliminary Catalog: Motions from WISE and NEOWISE Data

Abstract

CatWISE is a program to catalog sources selected from combined WISE and NEOWISE all-sky survey data at 3.4 and 4.6 μm (W1 and W2). The CatWISE Preliminary Catalog consists of 900,849,014 sources measured in data collected from 2010 to 2016. This data set represents four times as many exposures and spans over 10 times as large a time baseline as that used for the AllWISE Catalog. CatWISE adapts AllWISE software to measure the sources in coadded images created from six-month subsets of these data, each representing one coverage of the inertial sky, or epoch. The catalog includes the measured motion of sources in eight epochs over the 6.5 yr span of the data. From comparison to Spitzer, signal-to-noise ratio = 5 limits in magnitudes in the Vega system are W1 = 17.67 and W2 = 16.47, compared to W1 = 16.96 and W2 = 16.02 for AllWISE. From comparison to Gaia, CatWISE positions have typical accuracies of 50 mas for stars at W1 = 10 mag and 275 mas for stars at W1 = 15.5 mag. Proper motions have typical accuracies of 10 mas yr⁻¹ and 30 mas yr⁻¹ for stars with these brightnesses, an order of magnitude better than from AllWISE. The catalog is available in the WISE/NEOWISE Enhanced and Contributed Products area of the NASA/IPAC Infrared Science Archive.

Additional Information

© 2020 The American Astronomical Society. Received 2019 August 23; revised 2020 March 9; accepted 2020 March 10; published 2020 April 14. CatWISE was only possible because it uses and adapts software developed at IPAC for WISE to the maximum extent practical. We thank Tim Conrow, Frank Masci, and Ken Marsh for many helpful discussions and assistance in developing CatWISE. We also thank the anonymous referee for a careful reading and numerous suggestions which improved this paper. CatWISE uses data products from WISE, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory (JPL)/California Institute of Technology (Caltech), funded by the National Aeronautics and Space Administration (NASA), and from NEOWISE, which is a JPL/Caltech project funded by NASA. Characterization of CatWISE performance uses data from Gaia and from Spitzer. CatWISE is led by JPL/Caltech, with funding from NASA's Astrophysics Data Analysis Program (ADAP), and is also supported in part by ADAP grant NNH17AE75I at Lawrence Berkeley Laboratory. CatWISE is also supported by the Fellowships and Internships in Extremely Large Data Sets (FIELDS) program funded by NASA at UC Riverside. F.M. acknowledges support from the NASA Postdoctoral Program at the Jet Propulsion Laboratory, administered by Universities Space Research Association under a contract with NASA.

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Published - Eisenhardt_2020_ApJS_247_69.pdf

Accepted Version - 1908.08902.pdf

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Additional details

Created:
August 22, 2023
Modified:
October 20, 2023