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A late He-flash just in time for ISO?

Published online by Cambridge University Press:  25 May 2016

F. Kerber
Affiliation:
1Institut für Astronomie, Universität Innsbruck
H. Gratl
Affiliation:
1Institut für Astronomie, Universität Innsbruck
S. Kimeswenger
Affiliation:
1Institut für Astronomie, Universität Innsbruck
R. Weinberger
Affiliation:
1Institut für Astronomie, Universität Innsbruck
M. Roth
Affiliation:
2Las Campanas Observatory, Carnegie Institution of Washington, Chile
B. Duffee
Affiliation:
3University of Toronto Southern Telescope, La Serena, Chile

Extract

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The peculiar new object (α2000 = 17h52m32.7s, δ2000 = −17°41′08″) in Sagittarius discovered by Y. Sakurai (IAU Circ. 6322 (1996)) first classified as a slow nova turned out to be a star experiencing a late He-flash. The only other examples in historical times are V605 Aql, the central star of A 58 in 1919 and possibly FG Sge. The extremely H-poor central nebulae in A 30 and A 78 are considered the remainder of late He-flashes that happened thousands of years ago.

Type
VI. From Planetary Nebulae to White Dwarfs
Copyright
Copyright © Kluwer 1997