[Alumnos] Hoy 13 hs. -Seminario FCAGLP - Joseph Anderson

[secyt en fcaglp.fcaglp.unlp.edu.ar]

Hola a todos,

Les recordamos que hoy tendremos el siguiente seminario a las 13 hs.  
en el Salón Meridiano.
Los esperamos.

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Secretaría de Ciencia y Técnica
FCAGLP

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SEMINARIO: Joseph Anderson
European Southern Observatory, Chile.

Título: Type II supernovae: progenitors, diversity, and their use as  
probes of the Universe

Resumen:

Massive stars that reach the end of their lives with their hydrogen  
envelopes intact explode as type II supernovae (SNe II). SNe II are  
the most populous terminal stellar explosion in the Universe. The  
short lives of SNe II make them a direct tracer of massive star  
formation within galaxies, and their energetics affect their  
environments and hence galaxy evolution and dynamics. The intrinsic  
brightness of SNe II also make them useful probes of other processes  
in the Universe. SN II progenitors have been constrained to be red  
supergiant stars through their direct detection on pre-explosion  
images. However, it is currently unclear how the large diversity  
observed in their light-curves and spectra is linked to progenitor  
properties such as mass, metallicity, extent of the hydrogen envelope,  
or the role of binary interaction.

In this seminar I will discuss the our current knowledge of these  
explosions, focusing on studies of large samples of SNe, attempting to  
constrain the diversity of a range of observed transient parameters,  
and mapping these to progenitor and explosion properties. I will also  
discuss the use of SNe II as Astrophysical probes, concentrating on  
their application to measuring extra-galactic metallicities. I will  
finish with a look to current and future projects that attempt to  
further our knowledge of these massive star explosions.