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Type of talk
Seminar
Speaker
Raya Dastidar
Affiliation
Aries
Venue
Auditorium
Abstract

Observed properties of core-collapse supernovae (ccSNe), such as light curve and spectra are governed by the properties and environment of the progenitor star. Stripped envelope supernovae, a subclass of ccSNe, takes under its wings type Ib, Ic and IIb SNe. As the name aptly suggests, the progenitor star is stripped of its envelope prior to explosion. The extent of stripping depends on the environment of the star and/or the presence of a massive binary companion. We present in this report the broad band BVRI investigations of SN 2012P in the galaxy NGC 5806 obtained during 2012 Jan 24 to Jun 27. A photometric follow up was initiated within 2 days after the discovery (Jan 22), but due to the late discovery of the event the peak was not covered. We used χ2 minimization technique to determine the explosion epoch by fitting the SN 1993J light curve to our light curve. This suggested a probable explosion epoch which is 16 days prior to its discovery. Hence, we adopted 2012 Jan 6 as the possible explosion epoch. Further, we eliminated the host galaxy contamination underlying the SN position using High Order Transform of Psf And Template Subtraction software with template images acquired on 2013 April 14, almost a year later. It is found that the light curve of SN 2012P obtained from the difference images closely resembles SN 1993J, a prototype of this subclass, during the first∼50 days, but the event SN 2012P is considerably fainter than other well studied type IIb events.

Email Speaker
rayadastidar@aries.res.in
About Speaker

Ms. Raya Dastidar is a 2nd year student working with Dr.Brijesh Kumar

Email Host
manish@aries.res.in
Host Name
Dr.Manish
Host Phone (ext/mob)
773