Mass ratio in SS433 revisited

dc.contributor.author	Cherepashchuk A.
dc.contributor.author	Postnov K.
dc.contributor.author	Belinski A.
dc.date.accessioned	2020-01-21T20:33:26Z
dc.date.available	2020-01-21T20:33:26Z
dc.date.issued	2019
dc.identifier.issn	0035-8711
dc.identifier.uri	https://dspace.kpfu.ru/xmlui/handle/net/157417
dc.description.abstract	© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society We revisit the determination of binary mass ratio in the Galactic microquasar SS433 based on recent GRAVITY VLTI measurements of mass and angular momentum outflow through a circumbinary disc. The new observations combined with the constancy of the binary orbital period over ∼30 yr confirm that the mass ratio in SS433 is q = Mx/Mv 0.6. For the assumed optical star mass Mv ranging from ∼8 to 15 M such a mass ratio suggests a low limit of the compact object mass of Mx ∼ 5-9 M, placing the compact object in SS433 as a stellar mass black hole.
dc.relation.ispartofseries	Monthly Notices of the Royal Astronomical Society
dc.subject	Binaries: close
dc.subject	Stars: emission line, Be
dc.subject	Stars: individual: SS433
dc.title	Mass ratio in SS433 revisited
dc.type	Article
dc.relation.ispartofseries-issue	2
dc.relation.ispartofseries-volume	485
dc.collection	Публикации сотрудников КФУ
dc.relation.startpage	2638
dc.source.id	SCOPUS00358711-2019-485-2-SID85066994187

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