SIMBAD references

2018ApJ...863...43W - Astrophys. J., 863, 43-43 (2018/August-2)

The X-ray luminosity function of ultraluminous X-ray sources in collisional ring galaxies.


Abstract (from CDS):

Ring galaxies are fascinating laboratories: a catastrophic impact between two galaxies (one not much smaller than the other) has produced fireworks, especially in the larger one, when hit roughly perpendicularly to the plane. We analyze the point sources produced by the starburst episode following the impact in the rings of seven galaxies and determine their X-ray luminosity function (XLF). In total, we detect 63 sources, of which 50 have luminosity LX >= 1039 erg s–1, classifying them as ultraluminous X-ray sources (ULXs). We find that the total XLF is not significantly different from XLFs derived for other kinds of galaxies, with a tendency of having a larger fraction of high X-ray luminosity objects. Both the total number of ULXs and the number of ULXs per unit star formation rate are found in the upper envelope of the more normal galaxies distribution. Further analysis would be needed to address the issue of the nature of the compact component in the binary system.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: individual: (AM 0644-741, Arp 143, Arp 148) - galaxies: peculiar - galaxies: star formation - X-rays: binaries

Nomenclature: Figs 1-3, Table 4: [WFM2018] AM0644xN (Nos x1-x9), [WFM2018] ArpNNNxNN (Nos Arp143x1-Arp143x14, Arp148x1-Arp148x3).

CDS comments: NGC 2276-S6 is [SRW2012] Src. 3c in SIMBAD.

Simbad objects: 94

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