Document Type
Article
Publication Date
4-10-2003
Publication Title
The Astrophysical Journal
Department
Department of Physics and Astronomy
Abstract
An analysis of a 29 ks Chandra ACIS-S observation of the young, Cassiopeia A–like supernova remnant in the irregular galaxy NGC 4449 is presented. The observed 0.5–2.1 keV spectrum reveals the likely presence of several emission lines. A nonequilibrium ionization fit to the spectrum suggests an overabundance of oxygen around 20 times solar, consistent with the remnant’s UV and optical emission-line properties. We discuss the remnant’s approximate X-ray–derived elemental abundances and compare its X-ray spectrum and luminosity with other oxygen-rich remnants
DOI
10.1086/368124
Original Citation
Daniel J. Patnaude and Robert A. Fesen 2003 ApJ 587 221
Dartmouth Digital Commons Citation
Patnaude, Daniel J. and Fesen, Robert A., "Chandra Observations of the Luminous, Oxygen‐rich Supernova Remnants in the Irregular Galaxy NGC 4449" (2003). Dartmouth Scholarship. 2586.
https://digitalcommons.dartmouth.edu/facoa/2586
