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The Catalina Surveys Southern periodic variable star catalogue

Drake, A. J. and Djorgovski, S. G. and Catelan, M. and Graham, M. J. and Mahabal, A. A. and Larson, S. and Christensen, E. and Torrealba, G. and Beshore, E. and McNaught, R. H. and Garradd, G. and Belokurov, V. and Koposov, S. E. (2017) The Catalina Surveys Southern periodic variable star catalogue. Monthly Notices of the Royal Astronomical Society, 469 (3). pp. 3688-3712. ISSN 0035-8711. doi:10.1093/mnras/stx1085.

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Here, we present the results from our analysis of 6 yr of optical photometry taken by the Siding Spring Survey (SSS). This completes a search for periodic variable stars within the 30 000 deg^2 of the sky covered by the Catalina Surveys. The current analysis covers 81 million sources with declinations between −20° and −75° with median magnitudes in the range 11 < V < 19.5. We find approximately 34 000 new periodic variable stars in addition to the ∼9000 RR Lyrae that we previously discovered in SSS data. This brings the total number of periodic variables identified in Catalina data to ∼110 000. The new SSS periodic variable stars mainly consist of eclipsing binaries, RR Lyrae, LPVs, RS CVn stars, δ Scutis, and Anomalous Cepheids. By cross-matching these variable stars with those from prior surveys, we find that ∼90 per cent of the sources are new discoveries and recover ∼95 per cent of the known periodic variables in the survey region. For the known sources, we find excellent agreement between our catalogue and prior values of luminosity, period, and amplitude. However, we find many variable stars that had previously been misclassified. Examining the distribution of RR Lyrae, we find a population associated with the Large Magellanic Cloud (LMC) that extends more than 20° from its centre confirming recent evidence for the existence of a very extended stellar halo in the LMC. By combining SSS photometry with Dark Energy Survey data, we identify additional LMC halo RR Lyrae, thus confirming the significance of the population.

Item Type:Article
Related URLs:
URLURL TypeDescription
Djorgovski, S. G.0000-0002-0603-3087
Catelan, M.0000-0001-6003-8877
Graham, M. J.0000-0002-3168-0139
Mahabal, A. A.0000-0003-2242-0244
Larson, S.0000-0002-0057-8211
Belokurov, V.0000-0002-0038-9584
Koposov, S. E.0000-0003-2644-135X
Additional Information:© 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2017 May 2. Received 2017 April 27; in original form 2017 February 27. Published: 06 May 2017. CRTS and CSDR1 are supported by the U.S. National Science Foundation under grants AST-1313422 and AST-1413600. The CSS survey is funded by the National Aeronautics and Space Administration under grant no. NNG05GF22G issued through the Science Mission Directorate Near-Earth Objects Observations Programme. AJD, MC, GT, VB, and SEK acknowledge partial support by CONICYT's PCI program through grant DPI20140066. MC is additionally supported by the Ministry for the Economy, Development, and Tourism's Iniciativa Científica Milenio through grant IC 120009, awarded to the Millennium Institute of Astrophysics; by Proyecto Fondecyt Regular no. 1141141; and by Proyecto Basal PFB-06/2007. This research has made use of the International VSX data base, operated at AAVSO, Cambridge, Massachusetts, USA, and the SIMBAD data base, operated at CDS, Strasbourg, France. AllWISE makes use of data from WISE, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, and NEOWISE, which is a project of the Jet Propulsion Laboratory/California Institute of Technology. WISE and NEOWISE are funded by the National Aeronautics and Space Administration.
Funding AgencyGrant Number
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)DPI20140066
Ministerio de Economía, Fomento y TurismoIC 120009
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)1141141
Subject Keywords:stars: variables: general – stars: variables: RR Lyrae – Galaxy: halo – Galaxy: stellar content –Galaxy: structure
Issue or Number:3
Record Number:CaltechAUTHORS:20170828-102107847
Persistent URL:
Official Citation:A. J. Drake, S. G. Djorgovski, M. Catelan, M. J. Graham, A. A. Mahabal, S. Larson, E. Christensen, G. Torrealba, E. Beshore, R. H. McNaught, G. Garradd, V. Belokurov, S. E. Koposov; The Catalina Surveys Southern periodic variable star catalogue, Monthly Notices of the Royal Astronomical Society, Volume 469, Issue 3, 11 August 2017, Pages 3688–3712,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:80840
Deposited By: Tony Diaz
Deposited On:28 Aug 2017 18:40
Last Modified:15 Nov 2021 19:39

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