[Astronomy seminar] Seminar on Friday 14/9: Cristina Barbarino

[Astronomy seminar announcements]

When & where: Friday 2018-09-14 at 10:30 in FC61.

Who: Cristina Barbarino, Dept. of Astronomy, SU

Title: Stripped Envelope Supernovae from (i)PTF

Abstract:
Stripped envelope supernovae (SESNe) are the result of the collapse of a 
massive star whose outer layer of hydrogen has been partially or 
completely removed. Two main scenario have been proposed for the 
progenitor channel: a single massive star or a binary system. They 
represent a quite rare class of supernovae (~34% of core-collapse) and 
only in the recent time with the upcoming of several surveys it was 
possible to build up a sample of objects being statistically 
significant. In this scenario, the Palomar Transient Factory (PTF) and 
the intermediate PTF (iPTF) bring their contributions; infact, unlike 
all their predecessors, those were untargeted surveys. The surveys took 
place through the use, mainly, of the P48 and P60 telescopes at the 
Palomar Observatory but several other facilities were involved to 
implement the collected data set (e.g. P200, NOT, LCOGT, Keck, 
Gemini...) on the window of time 2009-2016. These surveys have been a 
forerunner for the upcoming Zwicky Transient Facility (ZTF) which 
already saw its first light and will be fully operative in early 2018. I 
will present the SNe Ib/c sample found from PTF and iPTF. The analysis 
is mainly focused on the photometric dataset, in order to estimate the 
explosion parameters and to investigate the progenitor system.

All welcome!

Angela & Alexis, Astronomy seminar organisers