The Spatial Ion Distribution of the Ring Around SN1987A

Details The Spatial Ion Distribution of the Ring Around SN1987A The Spatial Ion Distribution of the Ring Around SN1987A

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...180.3902p&link_type=abstract

American Astronomical Society, 180th AAS Meeting, #39.02; Bulletin of the American Astronomical Society, Vol. 24, p.790

Astronomy and Astrophysics

Astronomy

Scientific paper

Observations of SN 1987A have shown that the precursor had a complex mass loss history leading up to the explosion. The emergence of narrow UV emission lines from the supernova a few months after the initial explosion indicated the presence of dense circumstellar material. Further observations made in [O III] with the Hubble Space Telescope Faint Object Camera (HST FOC) confirmed the existence of a clumpy ring centered on the supernova. The initial UV breakout flash of the supernova ionized many species of ions in the clumpy ring. Detailed observations again using the HST FOC provide an opportunity to spatially map the distribution of the ions. Expected imaging observations in the lines of [N II], [O III], Hα and Hβ will be used to map the low and high density regions of the ring and to model early-time light curves of the lines. The light curves will be modelled using local line emissivities similar to those calculated by Lundqvist and Fransson (1991, ApJ. 380, 575). Light travel time effects produce geometry-dependent light curves; thus two extreme geometries will be modelled: a flat annulus in the plane of the ring, and a `wall' perpendicular to the ring plane. We will show that the characteristic light curve from a clumpy ring can be quite different than that of a smooth ring, and therefore physical parameters such as distance to the supernova and ring mass calculated from these data must be handled with care.

Affiliated with

Also associated with

No associations

Rating

The Spatial Ion Distribution of the Ring Around SN1987A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Spatial Ion Distribution of the Ring Around SN1987A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Spatial Ion Distribution of the Ring Around SN1987A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1512880