Book contents
- Frontmatter
- Contents
- Preface
- Conference Photograph
- Conference Participants
- Part one Stellar Evolution and Wind Theory
- Part two Wolf-Rayet Ring Nebulae
- Part three Supernovae
- Supernovae and their circumstellar environment
- Radio supernovae and progenitor winds
- Circumstellar interaction in supernovae
- SN progenitor winds
- Supernovae with dense circumstellar winds
- Compact supernova remnants
- The evolution of compact supernova remnants
- Massive supernovae in binary systems
- The progenitor of SN 1993J
- Narrow lines from SN 1993J
- UV spectroscopy of SN 1993J
- Ryle Telescope observations of SN 1993J
- SN 1993J – early radio emission
- The circumstellar gas around SN 1987A and SN 1993J
- X-ray emission from SN 1987A and SN 1993J
- The interstellar medium towards SN 1993J in M81
- Part four Asymptotic Giant Branch stars
- Part five Planetary Nebulae
- Part six Novae and Symbiotic Stars
- Poster Papers
- Author Index
- Object Index
Supernovae with dense circumstellar winds
from Part three - Supernovae
Published online by Cambridge University Press: 07 September 2010
- Frontmatter
- Contents
- Preface
- Conference Photograph
- Conference Participants
- Part one Stellar Evolution and Wind Theory
- Part two Wolf-Rayet Ring Nebulae
- Part three Supernovae
- Supernovae and their circumstellar environment
- Radio supernovae and progenitor winds
- Circumstellar interaction in supernovae
- SN progenitor winds
- Supernovae with dense circumstellar winds
- Compact supernova remnants
- The evolution of compact supernova remnants
- Massive supernovae in binary systems
- The progenitor of SN 1993J
- Narrow lines from SN 1993J
- UV spectroscopy of SN 1993J
- Ryle Telescope observations of SN 1993J
- SN 1993J – early radio emission
- The circumstellar gas around SN 1987A and SN 1993J
- X-ray emission from SN 1987A and SN 1993J
- The interstellar medium towards SN 1993J in M81
- Part four Asymptotic Giant Branch stars
- Part five Planetary Nebulae
- Part six Novae and Symbiotic Stars
- Poster Papers
- Author Index
- Object Index
Summary
Abstract
The circumstellar (CS) wind around a type II supernova (SN II) can be revealed through the optical emission induced by the collision of SN ejecta with the wind. The optical manifestations of the ejecta-wind interaction provide an excellent tool for the study of the mass-loss history of pre-SN II at the final red supergiant stage. There is strong evidence that pre-SN II with an extraordinarily high mass-loss rate, Ṁ > 10−4M⊙ yr−1, originate from the low-mass end of the massive star range (Mms, ∼ 8 − 10M⊙), while pre-SN II-P originating from Mms > 12M⊙, are characterized by a very low mass-loss rale, Ṁ < 10−5M⊙ yr−1.
SN 1979C (a type II-L), known for its powerful radio emission, was the first SN II where the late-time Hα luminosity was attributed to the ejecta-wind interaction (Chevalier & Fransson 1985). Yet the success of the radioactive model for the late-time luminosity of SN 1987A raised the problem of choosing between radioactive and shock-wave mechanisms in SN II. One possible solution was prompted by the observed excess in the Hα luminosity of SN 1980K (also type II-L and a strong radio emitter) at t = 670 days, relative to the predictions of the radioactive model (Chugai 1988). The interpretation of the excess in terms of the ejecta-wind interaction was supported by the strong radio luminosity and wide flat-top profile of Hα.
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- Information
- Circumstellar Media in Late Stages of Stellar Evolution , pp. 148 - 152Publisher: Cambridge University PressPrint publication year: 1994
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