Faint super-soft X-ray sources in XMM-Newton Large Magellanic Cloud fields
Article
Kahabka, P., Haberl, F., Pakull, M., Millar, W. C., White G. L., Filipovic, M. D. and Payne, J. L.. 2008. "Faint super-soft X-ray sources in XMM-Newton Large Magellanic Cloud fields
." Astronomy and Astrophysics: a European journal. 482 (1), pp. 237-245. https://doi.org/10.1051/0004-6361:20078535
| Article Title | Faint super-soft X-ray sources in XMM-Newton Large Magellanic Cloud fields |
|---|---|
| ERA Journal ID | 1050 |
| Article Category | Article |
| Authors | Kahabka, P., Haberl, F., Pakull, M., Millar, W. C., White G. L., Filipovic, M. D. and Payne, J. L. |
| Journal Title | Astronomy and Astrophysics: a European journal |
| Journal Citation | 482 (1), pp. 237-245 |
| Number of Pages | 9 |
| Year | 2008 |
| Publisher | EDP Sciences |
| Place of Publication | France |
| ISSN | 0004-6361 |
| 1432-0746 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1051/0004-6361:20078535 |
| Web Address (URL) | https://www.aanda.org/articles/aa/abs/2008/16/aa8535-07/aa8535-07.html |
| Abstract | Aims. We report the discovery of three faint, super-soft X-ray sources in LMC fields observed with XMM-Newton.Methods. We analyse the three new sources together with RX J0537.7-7034 and RX J0507.1-6743, both known since ROSAT.Results. We identify XMMU J050803.1-684017 with the LMC planetary nebula LHA 120-N 102 = LMC SMP 29. The EPIC-pn spectrum of XMMU J050803.1-684017can be fitted with a blackbody spectrum with an effective temperature of ~(26-51) eV and a bolometric luminosity of (0.1-30)10 erg s, depending on the assumed absorption. The source is consistent with the nucleus of a planetary nebula. The EPIC-pn spectrum of XMMU J052530.5-671501 is characterized by a blackbody temperature of ~(38-120) eV, a best-fit bolometric luminosity of ~310 erg s and absorbing LMC column of 10 cm. This most likely highly-absorbed super-soft source resembles the LMC super-soft source CAL 87. The EPIC-pn spectrum of XMMU J052215.0-701658 yields a blackbody temperature of ~(24-83) eV, but there are only about 40 source counts and the spectral parameters of the source are not well constrained. We observe RX J0537.7-7034 with EPIC-pn to be about a factor of 15 fainter compared to the ROSAT observation 11 years earlier. RX J0507.1-6743 is observed as an absorbed super-soft source by XMM-Newton and the improved X-ray position coincides with a MACHO star which is consistent with a symbiotic star. © 2008 ESO. |
| Keywords | Binaries: general; Galaxies: Magellanic Clouds; Stars; Stars: binaries: close; Stars: general; X-rays: stars |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | Max Planck Society, Germany |
| Observatory of Strasbourg, France | |
| James Cook University | |
| University of Western Sydney |
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