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Title: Near-infrared/optical identification of five low-luminosity X-ray pulsators
Authors: Kaur, Ramanpreet
Wijnands, Rudy
Paul, Biswajit
Patruno, A.
Degenaar, Nathalie
Issue Date: Mar-2010
Publisher: Wiley Interscience for the RAS
Citation: Monthly Notices of the Royal Astronomical Society, 2010, Vol.402, p2388
Abstract: We present the identification of the most likely near-infrared (NIR)/optical counterparts of five low-luminosity X-ray pulsators (AX J1700.1-4157, AX J1740.1-2847, AX J1749.2-2725, AX J1820.5-1434 and AX J1832.3-0840) which have long pulse periods (>150 s). The X-ray properties of these systems suggest that they are likely members of persistent high-mass X-ray binaries or intermediate polars (IPs). Using our Chandra observations, we detected the most likely counterparts of three sources (excluding AX J1820.5-1434 and AX J1832.3-0840) in their European Southern Observatory-New Technology Telescope (ESO-NTT) NIR observations, and a possible counterpart for AX J1820.5-1434 and AX J1832.3-0840 in the Two Micron All Sky Survey and Digitized Sky Survey observations, respectively. We also performed the X-ray timing and spectral analysis for all the sources using our XMM-Newton observations, which further helped us to constrain the nature of these systems. Our multiwavelength observations suggest that AX J1749.2-2725 and AX J1820.5-1434 most likely harbour accreting neutron stars, while AX J1700.1-4157, AX J1740.1-2847 and AX J1832.3-0840 could be IPs
Description: Restricted Access. An open-access version is available at (one of the alternative locations)
ISSN: 1365-2966 (Online)
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Copyright: 2010 The authors & the Royal Astronomical Society
Appears in Collections:Research Papers (A&A)

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