{ "id": "1712.04261", "version": "v1", "published": "2017-12-12T12:23:59.000Z", "updated": "2017-12-12T12:23:59.000Z", "title": "Identification of High Mass X-ray Binaries selected from XMM-Newton observations of the LMC", "authors": [ "N. van Jaarsveld", "D. A. H. Buckley", "V. A. McBride", "F. Haberl", "G. Vasilopoulos", "C. Maitra", "A. Udalski", "B. Miszalski" ], "categories": [ "astro-ph.HE" ], "abstract": "The Large Magellanic Cloud (LMC) currently hosts around 20 high mass X-ray binaries (HMXBs) of which most are Be/X-ray binaries. The LMC XMM-Newton survey provided follow-up observations of previously known X-ray sources that were likely HMXBs, as well as identifying new HMXB candidates. In total 19 candidate HMXBs were selected based on their X-ray hardness ratios. In this paper we present red and blue optical spectroscopy, obtained with SALT and the SAAO 1.9-m telescope, plus a timing analysis of the long term optical light curves from OGLE to confirm the nature of these candidates. We find that 9 of the candidates are new Be/X-ray Binaries, substantially increasing the LMC Be/X-ray binary population. Furthermore, we present the optical properties of these new systems, both individually and as a group of all the BeXBs identified by the XMM-Newton survey of the LMC.", "revisions": [ { "version": "v1", "updated": "2017-12-12T12:23:59.000Z" } ], "analyses": { "keywords": [ "high mass x-ray binaries", "xmm-newton observations", "lmc be/x-ray binary population", "xmm-newton survey", "identification" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }