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The environments and progenitors of stellar explosions

Christina Thone (IAA, Spain)

Évènements associés

  • Le lundi 17 novembre 2014 de 11:00 à 12:00 - lieu : Salle 108, Bâtiment des Communs - Meudon

In the past years, large progress has been made to identify the progenitors of different types of supernovae. However, some classes like stripped-envelope supernovae (SNe), superlumious SNe and gamma-ray bursts (GRBs) still remain a mystery, for various reasons. If direct observations of the progenitor star are not available or possible, another way to infer properties of the progenitor star is to study its host and surrounding stellar population at the highest possible angular resolution. I will give a short overview about the current methods and advances in the field trying and present a few recent examples for different stellar explosions : GRB hosts studied with IFU spectroscopy, the "SN Ib factory" NGC 2770 imaged with tunable narrowband filter and the SLSN host of PTF12dam telling us that SLSNe might actually be some of the most massive stars exploding. As an interesting add-on, high angular resolution observations can also tell us something about the properties throughout the host and its star-formation history.