Time-resolved spectroscopy of the M15 X-ray binary AC211/X2127+119

Show simple item record

dc.contributor.author Torres, Manuel Angel Perez
dc.contributor.author Callanan, Paul J.
dc.contributor.author Garcia, M. R.
dc.date.accessioned 2017-11-07T09:38:59Z
dc.date.available 2017-11-07T09:38:59Z
dc.date.issued 2003
dc.identifier.citation Torres, M. A. P., Callanan, P. J. and Garcia, M. R. (2003) 'Time-resolved spectroscopy of the M15 X-ray binary AC211/X2127+119', Monthly Notices of the Royal Astronomical Society, 341(4), pp. 1231-1238. doi:10.1046/j.1365-8711.2003.06486.x en
dc.identifier.volume 341
dc.identifier.issued 4
dc.identifier.startpage 1231
dc.identifier.endpage 1238
dc.identifier.issn 0035-8711
dc.identifier.uri http://hdl.handle.net/10468/4988
dc.identifier.doi 10.1046/j.1365-8711.2003.06486.x
dc.description.abstract We present time-resolved spectroscopy acquired during two epochs (spaced apart by similar to15 d) of the eclipsing low-mass X-ray binary AC211/X2127+119 in the globular cluster M15. The spectra show variations in the He iilambda4686 emission line not only modulated on the orbital period, but also on time-scales of a few days. During the first epoch of observation, the emission line shows a strong S -wave superimposed on the average double-peaked profile. The line exhibits no evidence of rotational disturbance at the orbital phases when the eclipse is observed in the optical continuum. During the second epoch, no double-peak or S -wave component is present. The He i absorption lines detected by other authors are not present in our spectra. A Doppler image of He iilambda4686 for the first epoch supports the presence of the accretion disc. No hotspot is detected, although enhanced emission at V-X = 30 km s(-1) , V-Y = 160 km s(-1) is observed. We discuss the implications of this emission in the context of an X-ray heated donor star, in which case a high mass ratio and neutron star primary are implied. Finally, we speculate on the possibility of a misaligned secondary star in AC211. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Oxford University Press en
dc.relation.uri https://academic.oup.com/mnras/article-lookup/doi/10.1046/j.1365-8711.2003.06486.x
dc.rights © 2003, Royal Astronomical Society en
dc.subject Accretion en
dc.subject Accretion discs en
dc.subject Close en
dc.subject Stars en
dc.subject Individual en
dc.subject AC211 en
dc.subject X2127+119 en
dc.subject X-rays en
dc.subject Binaries en
dc.title Time-resolved spectroscopy of the M15 X-ray binary AC211/X2127+119 en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Manuel Angel Perez Torres, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: mapt@phys.ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Monthly Notices of the Royal Astronomical Society en
dc.internal.IRISemailaddress mapt@phys.ucc.ie en


Files in this item

This item appears in the following Collection(s)

Show simple item record

This website uses cookies. By using this website, you consent to the use of cookies in accordance with the UCC Privacy and Cookies Statement. For more information about cookies and how you can disable them, visit our Privacy and Cookies statement