SN2009dn is a Type II Supernova

Details SN2009dn is a Type II Supernova SN2009dn is a Type II Supernova

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.2059....1k&link_type=abstract

The Astronomer's Telegram, #2059

Astronomy and Astrophysics

Astronomy

Optical, Novae, Supernovae, Transients

Scientific paper

We took a spectrum of SN2009dn (discovered by Yuan et al. ATel#2018)
with the Double Beam Spectrograph on the Palomar Hale Telescope on May
20.329 UT. The data show a prominent, broad H-alpha feature in emission.
The spectrum is similar to the Type II-L supernova 1979C at about 1
month past maximum (Branch et. al 1981, ApJ 244,780).

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