SN 2007sr was a
Type Ia supernova
A Type Ia supernova (read: "type one-A") is a type of supernova that occurs in binary systems (two stars orbiting one another) in which one of the stars is a white dwarf. The other star can be anything from a giant star to an even smaller white ...
event that happened in the galaxy
NGC 4038. It was announced on December 18, 2007, but was visible on images beginning December 7. It peaked at magnitude 12.7 on December 14.
[
]
References
External links
Light curves and spectra
on th
Open Supernova Catalog
Simbad
SN 2007sr
Supernova remnants
Supernovae
Corvus (constellation)
{{var-star-stub