Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725632l&link_type=abstract
American Astronomical Society, AAS Meeting #217, #256.32; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
NGC4449 is a relatively nearby Magellanic irregular galaxy, which houses a 50-100 year old remnant of an undetected core-collapse supernova, which remains the brightest observed X-ray supernova remnant (SNR) in the Universe. The galaxy also shows diffuse X-ray emission from outflowing gas powered by supernovae and stellar winds from an active starburst. Here we discuss new Chandra observations of the SNR and the galaxy, as well as new optical spectra of the SNR. We describe the time-evolution of the X-ray SNR, characterize the approximately 25 discrete X-ray sources associated with the galaxy, and discuss the properties of the soft X-ray emission from the outflow.
Blair William Patrick
Long Knox S.
Winkler Frank P.
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