Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 507, Issue 4, Pages 5847-5868Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stab1835
Keywords
methods: data analysis; catalogues; surveys; stars: general; galaxies: general; quasars: general
Categories
Funding
- Fundacao de Amparo `a Pesquisa do Estado de S~ao Paulo (FAPESP) [2019/01312-2]
- Coordenacao de Aperfeicoamento de Pessoal de N'ivel Superior -Brasil (CAPES) [001]
- FAPESP [2014/10566-4, 2009/542028, 2019/26492-3, 2017/25835-9, 2015/22308-2, 2015/11442-0, 2019/06766-1, 2018/25671-9, 2016/12331-0, 2018/20977-2, 2019/10923-5, 2018/09165-6, 2019/23388-0]
- Brazilian National Research Council (CNPq) [309209/2019-6]
- CNPq [304819/201794, 304971/2016-2, 401669/2016-5, 169181/2017-0, 312702/2017-5]
- Fundacao de Amparo `a Pesquisa do Estado do Rio de Janeiro (FAPERJ) [E26/203.186/2016]
- CAPES [88887.470064/2019-00]
- FAPERJ [E26/203.186/2016, E-26/203.184/2017]
- Serrapilheira Institute [Serra-1709-17357]
- Universidad de Alicante [UATALENTO18-02]
- State Agency for Research of the Spanish MCIU through the `Center of Excellence Severo Ochoa' award [SEV-2017-0709]
- CNPq
- Brazil, Chile (Universidad de La Serena)
- Spain (Centro de Estudios de F'isica del Cosmos de Arag'on, CEFCA)
- FAPESP
- CAPES
- FAPERJ
- Brazilian Innovation Agency (FINEP)
- Alfred P. Sloan Foundation
- U.S. Department of Energy Office of Science
- Center for High-Performance Computing at the University of Utah
- Brazilian Participation Group
- Carnegie Institution for Science, Carnegie Mellon University
- Chilean Participation Group
- French Participation Group
- Harvard-Smithsonian Center for Astrophysics
- Instituto de Astrof'isica de Canarias
- The Johns Hopkins University
- Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo
- Lawrence Berkeley National Laboratory
- Leibniz Institut fur Astrophysik Potsdam (AIP)
- Max-Planck-Institut fur Astronomie (MPIA Heidelberg)
- Max-Planck-Institut fur Astrophysik (MPA Garching)
- Max-Planck-Institut fur Extraterrestrische Physik (MPE)
- National Astronomical Observatories of China
- New Mexico State University
- New York University
- University of Notre Dame
- Observat'ario Nacional/MCTI
- The Ohio State University
- Pennsylvania State University
- Shanghai Astronomical Observatory
- United Kingdom Participation Group,
- Universidad Nacional Aut 'onoma deM 'exico
- University of Arizona
- University of Colorado Boulder
- University of Oxford
- University of Portsmouth,
- University of Utah
- University ofVirginia
- University ofWashington
- University of Wisconsin
- Vanderbilt University
- Yale University
- National Aeronautics and Space Administration
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [18/09165-6, 18/25671-9] Funding Source: FAPESP
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This study presents a catalogue of stars, quasars, and galaxies in the Stripe 82 region using S-PLUS DR2 data, showing the advantages of a 12-band filter system for object classification. By training random forest classifiers with spectroscopically confirmed sources from SDSS DR16 and DR14Q, the study achieves high performance in classification.
This paper provides a catalogue of stars, quasars, and galaxies for the Southern Photometric Local Universe Survey Data Release 2 (S-PLUS DR2) in the Stripe 82 region. We show that a 12-band filter system (5 Sloan-like and 7 narrow bands) allows better performance for object classification than the usual analysis based solely on broad bands (regardless of infrared information). Moreover, we show that our classification is robust against missing values. Using spectroscopically confirmed sources retrieved from the Sloan Digital Sky Survey DR16 and DR14Q, we train a random forest classifier with the 12 S-PLUS magnitudes + 4 morphological features. A second random forest classifier is trained with the addition of the W1 (3.4) and W2 (4.6) magnitudes from the Wide-field Infrared Survey Explorer (WISE). Forty-four percent of our catalogue have WISE counterparts and are provided with classification from both models. We achieve 95.76 percent (52.47 percent) of quasar purity, 95.88 percent (92.24 percent) of quasar completeness, 99.44 percent (98.17 percent) of star purity, 98.22 percent (78.56 percent) of star completeness, 98.04 percent (81.39 percent) of galaxy purity, and 98.8 percent (85.37 percent) of galaxy completeness for the first (second) classifier, for which the metrics were calculated on objects with (without) WISE counterpart. A total of 2926 787 objects that are not in our spectroscopic sample were labelled, obtaining 335 956 quasars, 1347 340 stars, and 1243 391 galaxies. From those, 7.4 percent, 76.0 percent, and 58.4 percent were classified with probabilities above 80 percent. The catalogue with classification and probabilities for Stripe 82 S-PLUS DR2 is available for download.
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