Pearson, K. J.; Hynes, R. I.; Steeghs, D.; Jonker, P. G.; Haswell, C. A.; King, A. R.; O'Brien, K.; Nelemans, G. and Mendez, M.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/10.1086/506191|
|Google Scholar:||Look up in Google Scholar|
We present optical and ultraviolet spectra, light curves, and Doppler tomograms of the low-mass X-ray binary EXO 0748−676. Using an extensive set of 15 emission-line tomograms, we show that, along with the usual emission from the stream and “hot spot,” there is extended nonaxisymmetric emission from the disk rim. Some of the emission and Hα and Hβ absorption features lend weight to the hypothesis that part of the stream overflows the disk rim and forms a two phase medium. The data are consistent with a 1.35 M neutron star with a main-sequence companion and hence a mass ratio .
|Item Type:||Journal Article|
|Copyright Holders:||2006. The American Astronomical Society|
|Keywords:||accretion, accretion disks — binaries: closestars: individual (UY Vol)|
|Academic Unit/Department:||Science > Physical Sciences
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Astrid Peterkin|
|Date Deposited:||25 Jun 2008|
|Last Modified:||14 Jan 2016 16:58|
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