Deep Chandra Survey of the Small Magellanic Cloud. III. Formation Efficiency of High-mass X-Ray Binaries
Antoniou V, Zezas A, Drake JJ, Badenes C, Haberl F, Wright NJ, Hong J, Di Stefano R, Gaetz TJ, Long KS, Plucinsky PP, Sasaki M, Williams BF, Winkler PF (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 887
Journal Issue: 1
Abstract
We have compiled the most complete census of high-mass X-ray binaries (HMXBs) in the Small Magellanic Cloud with the aim to investigate the formation efficiency of young accreting binaries in its low-metallicity environment. In total, we use 123 X-ray sources with detections in our Chandra X-ray Visionary Program (XVP), supplemented by 14 additional (likely and confirmed) HMXBs identified by Haberl & Sturm that fall within the XVP area, but are neither detected in our survey (nine sources) nor matched with any of the 127 sources identified in the XVP data (five sources). Specifically, we examine the number ratio of the HMXBs [N(HMXBs)] to (a) the number of OB stars, (b) the local star formation rate (SFR), and (c) the stellar mass produced during the specific star formation burst, all as a function of the age of their parent stellar populations. Each of these indicators serves a different role, but in all cases we find that the HMXB formation efficiency increases as a function of time (following a burst of star formation) up to similar to 40-60 Myr, and then gradually decreases. The formation efficiency peaks at similar to 30-40 Myr with average rates of N(HMXB)/SFR = 339(-83)(+78) (M-circle dot/yr)(-1), and N(HMXB)/M-* = (8.74(-0.92)(+1.0)) x 10(-6) M-circle dot(-1,) in good agreement with previous estimates of the average formation efficiency in the broad similar to 20-60 Myr age range.
Authors with CRIS profile
Involved external institutions
Texas Tech University (TTU)
United States (USA) (US)
Harvard-Smithsonian Center for Astrophysics (CfA)
United States (USA) (US)
University of Pittsburgh
United States (USA) (US)
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Germany (DE)
University of Keele
United Kingdom (GB)
Space Telescope Science Institute (STScI)
United States (USA) (US)
University of Washington
United States (USA) (US)
Middlebury College
United States (USA) (US)
United States (USA) (US)
Harvard-Smithsonian Center for Astrophysics (CfA)
United States (USA) (US)
University of Pittsburgh
United States (USA) (US)
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Germany (DE)
University of Keele
United Kingdom (GB)
Space Telescope Science Institute (STScI)
United States (USA) (US)
University of Washington
United States (USA) (US)
Middlebury College
United States (USA) (US)
How to cite
APA:
Antoniou, V., Zezas, A., Drake, J.J., Badenes, C., Haberl, F., Wright, N.J.,... Winkler, P.F. (2019). Deep Chandra Survey of the Small Magellanic Cloud. III. Formation Efficiency of High-mass X-Ray Binaries. Astrophysical Journal, 887(1). https://doi.org/10.3847/1538-4357/ab4a7a
MLA:
Antoniou, Vallia, et al. "Deep Chandra Survey of the Small Magellanic Cloud. III. Formation Efficiency of High-mass X-Ray Binaries." Astrophysical Journal 887.1 (2019).
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