ASCA observations of the Large Magellanic Cloud supernova remnant sample: Typing supernovae from their remnants

Details ASCA observations of the Large Magellanic Cloud supernova remnant sample: Typing supernovae from their remnants ASCA observations of the Large Magellanic Cloud supernova remnant sample: Typing supernovae from their remnants

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...444l..81h&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 444, no. 2, p. L81-L84

Astronomy and Astrophysics

Astrophysics

84

K Lines, Magellanic Clouds, Stellar Envelopes, Stellar Mass Ejection, Supernova Remnants, Supernovae, X Ray Spectra, Abundance, Identifying, Spectrum Analysis, Stellar Models, X Ray Spectroscopy

Scientific paper

We present our first results from a study of the supernova remnants (SNRs) in the Large Magellanic Cloud (LMC) using data from ASCA. The three remnants we have analyzed to date, 0509-67.5, 0519-69.0, and N103B, are among the smallest, and presumably also the youngest, in the Cloud. The X-ray spectra of these SNRs show strong K alpha emission lines of silicon, sulfur, argon, and calcium with no evidence for corresponding lines of oxygen, neon, or magnesium. The dominant feature in the spectra is a broad blend of emission lines around 1 keV which we attribute to L-shell emission lines of iron. Model calculations (Nomoto, Thielemann, & Yokoi 1984) show that the major products of nucleosynthesis in Type Ia supernovae (SNs) are the elements from silicon to iron, as observed here. The calculated nucleosynthetic yields from Type Ib and II SNs are shown to be qualitatively inconsistent with the data. We conclude that the SNs which produced these remnants were of Type Ia. This finding also confirms earlier suggestions that the class of Balmer-dominated remnants arise from Type Ia SN explosions. Based on these early results from the LMC SNR sample, we find that roughly one-half of the SNRs produced in the LMC within the last approximately 1500 yr came from Type Ia SNs.

Affiliated with

Also associated with

No associations

Rating

ASCA observations of the Large Magellanic Cloud supernova remnant sample: Typing supernovae from their remnants 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 ASCA observations of the Large Magellanic Cloud supernova remnant sample: Typing supernovae from their remnants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ASCA observations of the Large Magellanic Cloud supernova remnant sample: Typing supernovae from their remnants will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1058758