Spectroscopy of the variable K-dwarf UNSW-V-760: is it a pre-main-sequence pulsator?

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dc.contributor.authorKoen, Chris
dc.contributor.authorGray, Richard O.
dc.contributor.authorKawaler, S.
dc.contributor.authorCrawford, S. M.
dc.date.accessioned2017-07-10T10:19:25Z
dc.date.available2017-07-10T10:19:25Z
dc.date.issued2013
dc.description.abstractThe star UNSW-V-760 is a known variable, showing both flares and two non-sinusoidal periodicities. Availability of high signal-to-noise spectra reported in this paper has enabled a revision of the spectral type of this star to K3 IV-Vk. The star is a very rapid rotator (v sin i āˆ¼ 140 km sāˆ’1), and the abundance of lithium appears to be enhanced. 48 radial velocity measurements were obtained over the course of three successive nights. These may show the same two frequencies detected photometrically, but there is some uncertainty in the interpretation. Application of pulsation theory suggests that photometric frequencies could be explained as low pulsation modes, but an excitation mechanism remains to be found.en_US
dc.description.accreditationDepartment of HE and Training approved list
dc.identifier.citationKoen, C. et al. (2013). Spectroscopy of the variable K-dwarf UNSW-V-760: is it a pre-main-sequence pulsator? Monthly Notices of the Royal Astronomical Society, 435: 2494ā€“2500en_US
dc.identifier.issn0035-8711
dc.identifier.urihttp://hdl.handle.net/10566/3060
dc.language.isoenen_US
dc.publisherOxford University Pressen_US
dc.rightsPublisher retains copyright. Authors may archive the published version in their institutional repository.
dc.source.urihttp://dx.doi.org/doi:10.1093/mnras/stt1478
dc.subjectStarsen_US
dc.subjectIndividualen_US
dc.subjectUNSW-V-760 ā€“ starsen_US
dc.subjectPre-main-sequence ā€“ starsen_US
dc.subjectVariablesen_US
dc.titleSpectroscopy of the variable K-dwarf UNSW-V-760: is it a pre-main-sequence pulsator?en_US
dc.typeArticleen_US

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