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SN 2011 fe in M 101

U. Munaria, A. Hendenb, R. Belligolic, F. Castellanic, G. Cherinic, G. L. Righettic, A. Vagnozzic

aINAF Astronomical Observatory of Padova, 36012 Asiago (VI), Italy
bAAVSO, 49 Bay State Road, Cambridge, MA 02138, USA
cANS Collaboration, c/o Osservatorio Astronomico, via dell’Osservatorio 8, 36012 Asiago (VI), Italy

 


17 Settembre 2011

Abstract

Accurate and densely populated BVRCIC lightcurves of supernovae SN 2011fe in M101, SN 2012aw in M95 and SN 2012cg in NGC 4424 are presented and discussed. The SN 2011fe lightcurves span a total range of 342 days, from 17 days pre- to 325 days post-maximum. The observations of both SN 2012aw and SN 2012cg were stopped by solar conjunction, when the objects were still bright. The lightcurve for SN 2012aw covers 92 days, that of SN 2012cg spans 44 days. Time and brightness of maxima are measured, and from the lightcurve shapes and decline rates the absolute magnitudes are obtained, and the derived distances are compared to that of the parent galaxies. The color evolution and the bolometric lightcurves are evaluated in comparison with those of other well observed supernovae, showing no significant deviations. Keywords: stars: supernovae – individual: SN 2011fe – individual: 2012aw – individual: 2012cg.



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