A supernova in the south.

Details A supernova in the south. A supernova in the south.

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978msngr..15...24.&link_type=abstract

The Messenger, vol. 15, p. 24-25

Statistics

Supernovae:Discoveries

Scientific paper

Every year, several supernovae are discovered in the northern celestial hemisphere, mainly by astronomers at the Palomar and Asiago (Italy) observatories. These su pernovae normally reach magnitude 14-15 during the maximum before the slow decline in brightness sets in. They occur in relatively faint galaxies and it is important to discover them, not only because they represent rare events, but also because spectroscopic studies can reveal the composition of the material that is thrown out into interstellar space from the exploding star. The statistics show that in a medium-size galaxy like our own, the Milky Way, there is about one supernova per 10-30 years. See also the article about supernova remnants by M. Dennefeld in the Messenger No. 13, p.20.

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