Classification of supernovae and their remnants

Abstract

view Abstract Citations (64) References (110) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Classification of Supernovae and Their Remnants van den Bergh, Sidney Abstract Most young supernova remnants can be assigned to one of three distinct types: oxygen-rich remnants (Cas A), plerionic remnants (Crab), and collisionless shocks (Tycho). The presence of a pulsar in the LMC remnant 0540-69.3 suggests that this object is intermediate between oxygen-rich remnants and plerions Some remnants, such as CTB 80, W50/SS 433, G5.3-1.0, and G349.7+0.2 still defy classification. The fact that four out of seven oxygen-rich remnants are located in H II regions suggests that their progenitors were O-type stars. Most oxygen-rich SNRs were probably produced by SN Ib, but the progenitor of Cas A appears to have retained a thin outer shell of nitrogen-enriched hydrogen and would therefore have been classified as a (sub-luminous) SN II at the time of its explosion in 1658. Since the outer shell of the Crab Nebula is hydrogen-rich, SN 1054 must also have been of Type II. If 3C 58 is identified with SN 1181, then the progenitors of plerions have a range of ~30 in optical luminosity. The apparent absence of a fast-moving shell surrounding the Crab Nebula remains puzzling. Most evidence favors SN Ia as the precursors of collisionless shock-type remnants. The high frequency of such remnants in the Magellanic Clouds is, however, a source of concern. Jetlike features in some SNRs remain unexplained. A highly tentative classification scheme for SNRs produced by massive progenitors is given in Table 4 of this paper. The data in this table suggest that SN Ib have O or W-R main-seguence progenitors and leave oxygen-rich remnants, whereas early B-type stars produce SN II and leave plerionic remnants. With the new supernova rates recently determined by van den Bergh, McClure, and Evans the minimum main-sequence masses for SN II progenitors are found to be 5, 8, and 13 M_sun_ for Hubble parameters of 100, 75, and 50 km s^-1^ Mpc^-1^, respectively. Publication: The Astrophysical Journal Pub Date: April 1988 DOI: 10.1086/166178 Bibcode: 1988ApJ...327..156V Keywords: B Stars; Crab Nebula; H Ii Regions; Magellanic Clouds; O Stars; Supernova Remnants; High Frequencies; Hydrogen; Polarization (Waves); Pulsars; Stellar Evolution; Synchrotron Radiation; Astronomy; NEBULAE: SUPERNOVA REMNANTS; STARS: SUPERNOVAE full text sources ADS | data products SIMBAD (27) NED (11)