Other
Scientific paper
Jul 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.6043f&link_type=abstract
HST Proposal ID #6043
Other
Hst Proposal Id #6043 Interstellar Medium
Scientific paper
The interaction of supernova (SN) ejecta with circumstellar material supplied by the wind of the evolved progenitor star can sometimes provide enough energy to sustain the SN luminosity for several decades. Existing observations of certain Type II SNe strongly favor such an interpretation over other possible late-time energy sources. Some peculiar SNe II have such dense circumstellar winds that interaction with the ejecta substantially alters their observed properties even at early times. The UV spectrum is a powerful diagnostic for probing the conditions in the shocked outer ejecta and circumstellar gas. We propose to observe two old SNe (t = 7- 15 years) which, due to their extensive radio and optical data records, are particularly well suited for an investigation of the interaction between ejecta and circumstellar gas. We will also observe one of the most recent SNe II (SN 1994Y), which shows strong evidence for very early interaction with its circumstellar medium. The fluxes and intensity ratios of UV emission lines measured in FOS spectra will be used to test theoretical models of the interaction. HST observations of these objects will shed light on differences among them and their shocks, as well as on the mass-loss histories of their progenitor stars.
No associations
LandOfFree
The Interaction of Supernovae with Their Circumstellar Medium 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 Interaction of Supernovae with Their Circumstellar Medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Interaction of Supernovae with Their Circumstellar Medium will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1171757