A CHANDRA STUDY OF THE INTERSTELLAR METALLICITY IN THE LARGE MAGELLANIC CLOUD USING SUPERNOVA REMNANTS

ABSTRACT We report on the results from our measurements of the interstellar medium (ISM) abundances for the elements O, Ne, Mg, Si, and Fe in the Large Magellanic Cloud (LMC). We used the archival Chandra data for sixteen supernova remnants (SNRs) in the LMC (0453-68.5, DEM L71, N23, 0519-69.0, N49B...

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Bibliographic Details
Published in:The Astronomical journal 2016-06, Vol.151 (6), p.161
Main Authors: Schenck, Andrew, Park, Sangwook, Post, Seth
Format: Article
Language:English
Subjects:
Abundance
Aluminum
Astronomy
Interstellar matter
Interstellar medium
Iron
ISM: abundances
ISM: supernova remnants
Magellanic clouds
Metallicity
Silicon
Supernova
Supernova remnants
X-rays: ISM
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Summary:ABSTRACT We report on the results from our measurements of the interstellar medium (ISM) abundances for the elements O, Ne, Mg, Si, and Fe in the Large Magellanic Cloud (LMC). We used the archival Chandra data for sixteen supernova remnants (SNRs) in the LMC (0453-68.5, DEM L71, N23, 0519-69.0, N49B, N132D, N49, N206, 0534-69.9, DEM L238, N63A, Honeycomb, N157B, 0540-69.3, DEM L316B, and 0548-70.4). Our results represent LMC abundance measurements based on the modern Chandra data. We place tight constraints on our measured elemental abundances and find lower abundances than previous measurements by Hughes et al. (by a factor of approximately two on average except for Si) who utilized similar methods based on a smaller sample of ASCA data of SNRs in the LMC. We discuss the origins of the discrepancy between our Chandra and the previous ASCA measurements. We also discuss our results in comparison with the LMC abundance measurements in the literature.
ISSN:0004-6256
1538-3881
DOI:10.3847/0004-6256/151/6/161