NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-22 T02:58:28 PDT
Help | Comment | NED Home

For refcode 2003MNRAS.346...97N:
Retrieve 28 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by Royal Astronomical Society. 2003MNRAS.346...97N Explosion energies, nickel masses and distances of Type II plateau supernovae Nadyozhin, D. K. Abstract. The hydrodynamical modelling of Type II plateau supernova (SNIIP) light curves predicts a correlation between three observable parameters (plateau duration, absolute magnitude and photospheric velocity at the middle of the plateau) on the one hand, and three physical parameters (explosion energy E, mass of the envelope expelled and pre-supernova radius R) on the other. The correlation is used, together with adopted distances from the expanding photosphere method, to estimate and R for a dozen well-observed SNIIP. For this set of supernovae, the resulting value of E varies within a factor of 6 (0.5 <~E/10^51^ erg <~ 3), whereas the envelope mass remains within the limits . The pre-supernova radius is typically 200-600 R_sun_, but can reach >~1000 R_sun_ for the brightest supernovae (e.g. SN 1992am). A new method of determining the distance of SNIIP is proposed. It is based on the assumption of a correlation between the explosion energy E and the^56^Ni mass required to power the post-plateau light curve tail through^56^Co decay. The method is useful for SNIIP with well-observed bolometric light curves during both the plateau and radioactive tail phases. The resulting distances and future improvements are discussed.
Retrieve 28 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home