Discovery of the new slowly pulsating B star HD 163830 (B5 II/III) from MOST space-based photometry

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dc.creator Guenther, David B.
dc.creator Aerts, C.
dc.creator De Cat, P.
dc.creator Kuschnig, R.
dc.creator Matthews, J. M.
dc.creator Moffat, A. F. J.
dc.creator Rucinski, S. M.
dc.creator Sasselov, D.
dc.creator Walker, G. A. H.
dc.creator Weiss, W. W.
dc.date.accessioned 2015-07-29T14:53:12Z
dc.date.available 2015-07-29T14:53:12Z
dc.date.issued 2006-05-10
dc.identifier.issn 0004-637X
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/26268
dc.description Publisher's version/PDF en_CA
dc.description.abstract We report the discovery of a new slowly pulsating B star, with the largest number of detected frequencies to date by more than a factor of 3, based on 37 days of MOST (Microvariability and Oscillations of STars) satellite guide star photometry. The star HD 163830 (V = 9.3, B5 II/III) varies in 20 detected frequencies in the range 0.035–1.06 day[superscript -1] (0.4–12.3 [micro]Hz) with amplitudes from 0.7 to 7.6 mmag (with a signal-to-noise ratio from 4 to 41). Eighteen of these frequencies are consistent with low-degree, high-order nonradial g-modes of seismic models of an evolved 4.5 M[circled dot] star. We are unable to identify one unique model due to lack of mode identifications. The lowest two frequencies may be associated with the rotation of HD 163830, but firm proof of this must await future spectroscopic data. en_CA
dc.language.iso en en_CA
dc.publisher American Astronomical Society en_CA
dc.publisher IOP Publishing
dc.relation.uri http://dx.doi.org/10.1086/504634
dc.rights Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
dc.subject.lcsh Early stars
dc.subject.lcsh Stellar oscillations
dc.subject.lcsh Pulsating stars
dc.subject.lcsh Astronomical photometry
dc.title Discovery of the new slowly pulsating B star HD 163830 (B5 II/III) from MOST space-based photometry en_CA
dc.type Text en_CA
dcterms.bibliographicCitation Astrophysical Journal 642(2), L165-L168. (2006) en_CA


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Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
 
Published Version: http://dx.doi.org/10.1086/504634
 
 

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