Findlay, Joseph R.
Myers, Adam D.
AffiliationUniv Arizona, Steward Observ
MetadataShow full item record
PublisherIOP PUBLISHING LTD
CitationHu Zou et al 2018 ApJS 237 37
Rights© 2018. The American Astronomical Society. All rights reserved.
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AbstractThis paper describes the second data release (DR2) of the Beijing-Arizona Sky Survey (BASS). BASS is an imaging survey covering a 5400 deg(2) footprint in the g and r bands using the 2.3 m Bok telescope. DR2 includes the observations through 2017 July obtained by BASS and by the Mayall z-band Legacy Survey (MzLS), which used the 4 m Mayall telescope to observe the same footprint. BASS and MzLS have completed 72% and 76% of their observations. The two surveys will be served for the spectroscopic targeting of the upcoming Dark Energy Spectroscopic Instrument. Both BASS and MzLS data are reduced by the same pipeline. We have updated the basic data reduction and photometric calibrations in DR2. In particular, source detections are performed on stacked images, and photometric measurements are co-added from single-epoch images based on these sources. The median 5 sigma point-source depths after Galactic extinction corrections are 24.05, 23.61, and 23.10 mag for the g, r, and z bands, respectively. The DR2 data products include stacked images, co-added catalogs, and single-epoch images and catalogs. The BASS website (http://batc.bao.ac.cn/BASS/) provides detailed information and links to download the data.
VersionFinal published version
SponsorsNational Astronomical Observatories of China; Chinese Academy of Sciences [XDB09000000]; Special Fund for Astronomy from the Ministry of Finance; External Cooperation Program of Chinese Academy of Sciences [114A11KYSB20160057]; Chinese National Natural Science Foundation [11433005, 11673027, 11733007, 11603034, 11503051, U1531115, U1731243]; National Astronomical Observatories; Chinese, Academy of Sciences; National Basic Research Program of China (973 Program) [2015CB857004, 2014CB845704, 2014CB845702, 2013CB834902]; National Key R&D Program of China [2016YFA0400703]; Chinese National Science Foundation ; Office of Science, Office of High Energy Physics of the U.S. Department of Energy [DE-AC02-05CH1123]; National Aeronautics and Space Administration [NNX08AR22G]; National Science Foundation [AST-1238877]; University of Arizona; Brazilian Participation Group; Brookhaven National Laboratory; Carnegie Mellon University; University of Florida; French Participation Group; German Participation Group; Harvard University; Instituto de Astrofisica de Canarias; Michigan State/Notre Dame/JINA Participation Group; Johns Hopkins University; Lawrence Berkeley National Laboratory; Max Planck Institute for Astrophysics; Max Planck Institute for Extraterrestrial Physics; New Mexico State University; New York University; Ohio State University; Pennsylvania State University; University of Portsmouth; Princeton University; Spanish Participation Group; University of Tokyo; University of Utah; Vanderbilt University; University of Virginia; University of Washington; Yale University