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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
The XMM-Newton survey of the small Magellanic cloud: The X-ray point-source catalogue
Astronomy and Astrophysics, Volume 558, Article A3, Year 2013
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Description
Context. Local-Group galaxies provide access to samples of X-ray source populations of whole galaxies. The XMM-Newton survey of the Small Magellanic Cloud (SMC) completely covers the bar and eastern wing with a 5.6 deg2 area in the (0.2?12.0) keV band. Aims. To characterise the X-ray sources in the SMC field, we created a catalogue of point sources and sources with moderate extent. Sources with high extent (≤40'') have been presented in a companion paper. Methods. We searched for point sources in the EPIC images using sliding-box and maximum-likelihood techniques and classified the sources using hardness ratios, X-ray variability, and their multi-wavelength properties. Results. The catalogue comprises 3053 unique X-ray sources with a median position uncertainty of 1.3" down to a flux limit for point sources of ∼10?14 erg cm?2 s?1 in the (0.2?4.5) keV band, corresponding to 5 × 1033 erg s?1 for sources in the SMC.We discuss statistical properties, like the spatial distribution, X-ray colour diagrams, luminosity functions, and time variability. We identified 49 SMC high-mass X-ray binaries (HMXB), four super-soft X-ray sources (SSS), 34 foreground stars, and 72 active galactic nuclei (AGN) behind the SMC. In addition, we found candidates for SMC HMXBs (45) and faint SSSs (8) as well as AGN (2092) and galaxy clusters (13). Conclusions. We present the most up-to-date catalogue of the X-ray source population in the SMC field. In particular, the known population of X-ray binaries is greatly increased. We find that the bright-end slope of the luminosity function of Be/X-ray binaries significantly deviates from the expected universal high-mass X-ray binary luminosity function. © ESO 2013.
Authors & Co-Authors
Sturm, Richard
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Haberl, Frank W.
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Pietsch, Wolfgang N.
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Ballet, Jean
France, Gif-sur-yvette
Institut de Recherche Sur Les Lois Fondamentales de L'univers
Hatzidimitriou, Despina
Greece, Athens
National and Kapodistrian University of Athens
Buckley, David A.H.
South Africa, Cape Town
South African Astronomical Observatory
Coe, Malcolm J.
United Kingdom, Southampton
University of Southampton
Ehle, Matthias
Spain, Madrid
European Space Astronomy Centre
Filipovíc, Miroslav D.
Australia, Penrith
Western Sydney University
La Palombara, N.
Italy, Milan
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Milan
Tiengo, Andrea
Italy, Milan
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Milan
Italy, Pavia
Scuola Universitaria Superiore Iuss Di Pavia
Italy, Pavia
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pavia
Statistics
Citations: 64
Authors: 11
Affiliations: 10
Identifiers
Doi:
10.1051/0004-6361/201219935
ISSN:
00046361
e-ISSN:
14320746
Research Areas
Health System And Policy
Study Design
Cross Sectional Study
Study Approach
Quantitative