Show simple item record

Files in this item


Item metadata

dc.contributor.authorTovmassian, G.
dc.contributor.authorGonzález, J. F.
dc.contributor.authorHernández, M.-S.
dc.contributor.authorGonzález–Buitrago, D.
dc.contributor.authorZharikov, S.
dc.contributor.authorHernández Santisteban, J. V.
dc.identifier.citationTovmassian , G , González , J F , Hernández , M-S , González–Buitrago , D , Zharikov , S & Hernández Santisteban , J V 2018 , ' Quest for the donor star in the magnetic precataclysmic variable V1082 Sgr ' , Astrophysical Journal , vol. 869 , no. 1 , 22 .
dc.identifier.otherPURE: 261034925
dc.identifier.otherPURE UUID: 7ddefc5f-c1b0-4cd5-bdac-a0845d085275
dc.identifier.otherBibCode: 2018ApJ...869...22T
dc.identifier.otherScopus: 85058469666
dc.identifier.otherORCID: /0000-0002-6733-5556/work/61370251
dc.description.abstractWe obtained high-resolution spectra and multicolor photometry of V1082 Sgr to study the donor star in this 20.8 hr orbital period binary, which is assumed to be a detached system. We measured the rotational velocity (v sin i = 26.5 ± 2.0 km s−1), which, coupled with the constraints on the white dwarf mass from the X-ray spectroscopy, leads to the conclusion that the donor star barely fills 70% of its corresponding Roche lobe radius. It appears to be a slightly evolved K2-type star. This conclusion was further supported by a recently published distance to the binary system measured by the Gaia mission. At the same time, it becomes difficult to explain a very high (>10−9 M⊙ yr-1 ) mass transfer and mass accretion rate in a detached binary via stellar wind and magnetic coupling.
dc.relation.ispartofAstrophysical Journalen
dc.rightsCopyright © 2018 American Astronomical Society. All rights reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at
dc.subjectBinaries: closeen
dc.subjectCataclysmic variablesen
dc.subjectStars: individual: V1082 Sgren
dc.subjectStar: rotationen
dc.subjectStars: windsen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleQuest for the donor star in the magnetic precataclysmic variable V1082 Sgren
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record