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The case for hypercritical accretion in m33 x-7

Title
The case for hypercritical accretion in m33 x-7
Authors
Mendez E.M.Brown G.E.Lee C.-H.Park I.H.
Ewha Authors
박일흥
Issue Date
2008
Journal Title
Astrophysical Journal Letters
ISSN
2041-8205JCR Link
Citation
vol. 689, no. 1 PART 2, pp. L9 - L12
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The spin parameter of the black hole in M33 X-7 has recently been measured to be a * p 0.77 ± 0.05. It has been proposed that the spin of the 15.65 M⊙ black hole is natal. We show that this is not a viable evolutionary path given the observed binary orbital period of 3.45 days since the explosion that would produce a black hole with the cited spin parameter and orbital period would disrupt the binary. Furthermore, we show that the system has to be evolved through the hypercritical mass transfer of-5 M⊙ from the secondary star to the black hole. © 2008. The American Astronomical Society. All rights reserved. Printed in U.S.A.
DOI
10.1086/593977
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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