Hostname: page-component-cc8bf7c57-5wl6q Total loading time: 0 Render date: 2024-12-11T22:53:19.877Z Has data issue: false hasContentIssue false
  • English
  • Français

Doppler Imaging of V404 Cyg in Quiescence

Published online by Cambridge University Press:  12 April 2016

Jorge Casares
Jorge Casares*
Affiliation:
University of Oxford, Department of Physics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present Doppler images of the accretion disc in the black hole X-ray transient V404 Cyg during its quiescent phase. The Hα map shows evidence for a hot spot, indicating that mass transfer is continuing long after the 1989 outburst. Both the Hα and the IR Ca II emission maps exhibit intense bright spots at the position of the secondary star, which we take as a sign of chromospheric activity. The Ca II emission arises from the outer parts of the accretion disc, and its surface brightness distribution is consistent with dwarf novae discs (I∝R−3/2).

Type
X-Ray Binaries
Information
International Astronomical Union Colloquium , Volume 158: Cataclysmic Variables and Related Objects , 1996 , pp. 395 - 398
Copyright
Copyright © Kluwer 1996

References

1. Casares, J., Charles, P.A., 1992, MNRAS, 255, 7 CrossRefGoogle Scholar
2. Casares, J., Charles, P.A., 1994, MNRAS, 271, 5pCrossRefGoogle Scholar
3. Casares, J., Charles, P.A., Naylor, T., 1992, Nature, 355, 614 CrossRefGoogle Scholar
4. Casares, J., Charles, P.A., Naylor, T., Pavlenko, E.P., 1993, MNRAS, 265, 834 CrossRefGoogle Scholar
5. Horne, K., Saar, S.H., 1991, Ap. J., 374, L55 CrossRefGoogle Scholar
6. Marsden, B.G., 1989, IAUC 4783 Google Scholar
7. Marsh, T.R., Horne, K., 1988, MNRAS, 235, 269 CrossRefGoogle Scholar
8. Marsh, T.R., Robinson, E.L., Wood, J.H., 1994 MNRAS, 266, 137 CrossRefGoogle Scholar
9. Martín, E.L., Rebolo, R., Casares, J., Charles, P.A., 1992, Nature, 358, 129 CrossRefGoogle Scholar
10. Martín, E.L., Rebolo, R., Casares, J., Charles, P.A., 1994, Ap. J., 435, 791 CrossRefGoogle Scholar
11. Rutten, R.G.M., 1987, A&A, 177, 131 Google Scholar
12. Shahbaz, T., Ringwald, F.A., Bunn, J.C., et al., 1994, MNRAS, 271, 10pCrossRefGoogle Scholar
13. Tanaka, Y., 1989, in “Proc. 23rd ESLAB Symp. on Two-Topics in X-Ray Astronomy”, ed. Hunt, J. & Battrick, B. (ESA Publ. Division), p3 Google Scholar