Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21733720a&link_type=abstract
American Astronomical Society, AAS Meeting #217, #337.20; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
One of the most unique and mysterious classes of supernovae are Type IIn. Type IIn supernovae spectra are characterized by strong, relatively narrow emission lines, most notably Hα, which are associated with a circumstellar medium (CSM) surrounding the progenitor star that become excited once the supernova ejecta collide with it. The exact nature of IIn progenitors is still debatable with many believing association with massive stars.
The intra-host spatial distributions of transients provide vital information for constraining progenitor properties. We compare the spatial distributions of type IIn supernovae in near ultra-violet images from the GALEX space telescope and g' images from the Sloan Digital Sky Survey of supernova hosts from the Padova-Asiago catalog. We find that the spatial distribution of type IIn supernovae are correlated with the distribution of light in their hosts in g', but are anti-correlated in the near ultra-violet. This implies either lower progenitor masses then previously thought, or a unique evolutionary pathway.
Ashcraft Teresa
Neill James D.
Raskin Cody
Scannapieco Evan
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