SN 2013ej is a
Type II-P supernova in the nearby spiral galaxy
Messier 74 (NGC 628). It was discovered by the
Lick Observatory Supernova Search on July 25, 2013, with the 0.76 m
Katzman Automatic Imaging Telescope, with pre-discovery images having been taken the day before.
Supernova 2013ej was noted for being as bright as 12th
magnitude
Magnitude may refer to:
Mathematics
*Euclidean vector, a quantity defined by both its magnitude and its direction
*Magnitude (mathematics), the relative size of an object
*Norm (mathematics), a term for the size or length of a vector
*Order of ...
.
SN 2013ej was compared to supernovas SN 2004et and SN 2007od.
Based on various observations it has been theorized that the supernova originated from a
red supergiant
Red supergiants (RSGs) are stars with a supergiant luminosity class ( Yerkes class I) of spectral type K or M. They are the largest stars in the universe in terms of volume, although they are not the most massive or luminous. Betelgeuse and Antar ...
star that went supernova.
SN 2013ej is one of the brightest Type II supernova detected to-date in NGC 628.
References
External links
Light curves and spectra on th
Open Supernova Catalog
20130725
Supernovae
Pisces (constellation)
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