Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...572l..61m&link_type=abstract
The Astrophysical Journal, Volume 572, Issue 1, pp. L61-L65.
Astronomy and Astrophysics
Astronomy
173
Gamma Rays: Bursts, Line: Formation, Line: Identification, Nuclear Reactions, Nucleosynthesis, Abundances, Stars: Supernovae: General, Stars: Supernovae: Individual: Alphanumeric: Sn 2002Ap
Scientific paper
Photometric and spectroscopic data of the energetic Type Ic supernova (SN) 2002ap are presented, and the properties of the SN are investigated through models of its spectral evolution and its light curve. The SN is spectroscopically similar to the ``hypernova'' SN 1997ef. However, its kinetic energy [~(4-10)×1051 ergs] and the mass ejected (2.5-5 Msolar) are smaller, resulting in a faster evolving light curve. The SN synthesized ~0.07 Msolar of 56Ni, and its peak luminosity was similar to that of normal SNe. Brightness alone should not be used to define a hypernova, whose defining character, namely very broad spectral features, is the result of high kinetic energy. The likely main-sequence mass of the progenitor star was 20-25 Msolar, which is also lower than that of both hypernovae SN 1997ef and SN 1998bw. SN 2002ap appears to lie at the low-energy and low-mass end of the hypernova sequence as it is known so far. Observations of the nebular spectrum, which is expected to dominate by the summer of 2002, are necessary to confirm these values.
Ayani Kazuya
Benetti Stefano
Chornock Ryan
Deng Jian
Doi Makoto
No associations
LandOfFree
The Type Ic Hypernova SN 2002ap does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Type Ic Hypernova SN 2002ap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Type Ic Hypernova SN 2002ap will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1893468