Hostname: page-component-6bf8c574d5-5ws7s Total loading time: 0 Render date: 2025-03-08T04:21:39.371Z Has data issue: false hasContentIssue false
  • English
  • Français

SN 1987A: Ultraviolet Observations and Mass Loss

Published online by Cambridge University Press:  12 April 2016

Robert P. Kirshner
Robert P. Kirshner*
Affiliation:
Harvard-Smithsonian Center for Astrophysics 60 Garden St., Cambridge, MA 02138USA

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.

Mass loss from the B3 Ia progenitor star for SN 1987A is revealed by the recent emergence of narrow ultraviolet emission lines. The emitting gas is nitrogen-rich, has low velocity, and may be located a light-year from the supernova. This gives every sign of having been ejected from the SK −69 202 progenitor when it was a red supergiant, prior to its brief and ultimately violent life as a blue supergiant. Changes in the hydrogen line profiles during the early evolution provide a way to estimate the density distribution in the supernova atmosphere, and the mass of hydrogen it contains. A preliminary estimate is that the power-law index of density in the envelope goes as V−11 and the mass that lies above a velocity of 6, 000 km s−1 is between 1 and 6 solar masses.

Type
Part III. Chemical and Dynamical Structures of Exploding Stars
Information
International Astronomical Union Colloquium , Volume 108: Atmospherics Diagnostics of Stellar Evolution: Chemical Peculiarity, Mass Loss, and Explosion , 1988 , pp. 252 - 258
Copyright
Copyright © Springer-Verlag 1988

References

Blanco, V.M. et al. Ap. J. 320, 589.CrossRefGoogle Scholar
Branch, D. 1987, Ap. J. (Lett.) 320, L121.CrossRefGoogle Scholar
Cassatella, A. et al 1987, Astr. Ap. 177, L29.Google Scholar
Chevalier, R.A. and Fransson, C.. 1987, Nature 328, 44.Google Scholar
Davidson, K., et al. 1986, Ap. J. 305, 867.Google Scholar
Dupree, A.K., Kirshner, R.P., Nassiopoulos, G.E., Raymond, J.C, and Sonneborn, G. 1987, Ap. J. 320, 597.CrossRefGoogle Scholar
Eastman, R. and Kirshner, R.P. 1988 B.A.A.S. Vancouver late papers.Google Scholar
Fransson, C. et al. 1984, Astr. Astrophys. 132, 1.Google Scholar
Fransson, C.. et al 1987, Astr. Astrophys. 177, L33.Google Scholar
Gilmozzi, R. et al. 1987, Nature 328, 318.CrossRefGoogle Scholar
Kirshner, R.P., Sonneborn, G., Crenshaw, D.M., and Nassiopoulos, G.E. 1987, Ap. J. 320, 602.Google Scholar
Kirshner, R.P. et al. 1987 IAU Circular 4435.Google Scholar
Koshiba, M. 1987, IAU Circular 4338.Google Scholar
Lucy, L. 1987, Astr. Astrophys. 182, L31.Google Scholar
Lundquist, P. and Fransson, C. 1987 in “ESO Workshop on the SN 1987A” (Danziger, I.J., ed.)Google Scholar
Maeder, A. 1987, Astron. Astrophys. 173, 287.Google Scholar
Makino, F. 1987 IAU Circular 4336.Google Scholar
Panagia, N. et al 1987, Astr. Astrophys. 177, L25.Google Scholar
Sonneborn, G., Altner, B.A., and Kirshner, R.P. 1987, Ap. J. (Lett.) in press.Google Scholar
Svoboda, R. 1987, IAU Circular 4340.Google Scholar
Turtle, A.J. et al. 1987, Nature 327, 38.CrossRefGoogle Scholar
Walborn, N.R., Lasker, B.M., Laidler, V.M., and Chu, Y-H 1987, Ap.J. (Lett.) 321, L41.CrossRefGoogle Scholar
Wamsteker, W. et al. 1987, IAU Circular 4410.Google Scholar
West, R.M., Lauberts, A., Jorgensen, H.E., and Schuster, H-E., 1987, Astr.Astrophys. 177, L1.Google Scholar