A search for the optical and near-infrared counterpart of the accreting millisecond X-ray pulsar XTE J1751−305 |
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| Authors: | P G Jonker G Nelemans Z Wang A K H Kong D Chakrabarty M Garcia P J Groot M van der Klis T Kerr B Mobasher M Sullivan T Augusteijn B W Stappers P Challis R P Kirshner J Hjorth A Delsanti |
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| Institution: | Institute of Astronomy, Madingley Road, Cambridge CB3 0HA;Department of Physics, and Center for Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;Harvard–Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA;Department of Astrophysics, University of Nijmegen, PO Box 9010, Nijmegen, the Netherlands;Astronomical Institute 'Anton Pannekoek', University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, the Netherlands;Joint Astronomy Center, University Park, 660 N. A'ohoku Place, Hilo, Hawaii 96720, USA;Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA;Physics Department, University of Durham, Science Labs, South Road, Durham DH1 3LE;Nordic Optical Telescope, Apartado 474, 38700 Santa Cruz de La Palma, Canary Islands, Spain;Dwingeloo, Postbus 2, 7990 AA Dwingeloo, the Netherlands;Astronomical Observatory, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen Ø, Denmark;European Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago 19, Chile |
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| Abstract: | We have obtained optical and near-infrared images of the field of the accreting millisecond X-ray pulsar XTE J1751?305. There are no stars in the 0.7-arcsec error circle (0.7 arcsec is the overall uncertainty arising from tying the optical and X-ray images and from the intrinsic uncertainty in the Chandra X-ray astrometric solution). We derive limiting magnitudes for the counterpart of R > 23.1, I > 21.6, Z > 20.6, J > 19.6 and K > 19.2 . We compare these upper limits with the magnitudes one would expect for simple models for the possible donor stars and the accretion disc subject to the reddening observed in X-rays for XTE J1751?305 and when put at the distance of the Galactic Centre (8.5 kpc). We conclude that our non-detection does not constrain any of the models for the accretion disc or possible donor stars. Deep, near-infrared images obtained during quiescence will, however, constrain possible models for the donor stars in this ultracompact system. |
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| Keywords: | stars: individual: XTE J1751?305 stars: neutron X-rays: stars |
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