[Okc-wp4] Astronomy Seminar Friday 25/09, 10:30 am

[Francesco Taddia]

-------------------------------------------
Francesco Taddia
Postdoctoral Researcher
Department of Astronomy
Stockholm University, Sweden
ftadd at astro.su.se <mailto:ftadd at astro.su.se>







> On 21 Sep 2015, at 12:21, Garrelt Mellema <garrelt.mellema at astro.su.se> wrote:
> 
> Title: Type Ia supernovae: Explosions and Progenitors
> 
> Friday 25 September 2015 from 10:30 to 11:30 at FC61 (astronomy lecture room)
> 
> Speaker: Wolfgang Kerzendorf (ESO, Garching) 	
> 
> Abstract: Type Ia supernovae are known as the precise distance indicators that allowed the remarkable discovery of the accelerated expansion of the universe. Despite this astounding feat, there still remain large uncertainties in many of the key issues surrounding these extremely energetic events. These uncertainties, while not being horribly detrimental to their use as distance indicators, hamper the understanding of the far reaching consequences these cosmic factories of heavy elements have on the chemical evolution of the Universe. Type Ia Supernovae can be divided into three distinct phases. The pre-supernova evolution, the explosion itself and the expansion phase. In this talk I will first presents our findings on the progenitor question (pre-supernova phase), then shortly touch on our understanding of the explosion itself, and finally present our work on modelling the spectra resulting from the expansion phase. I will close by giving an outlook of the future of spectro!
> scopic mo
> d
> eling and its consequences for our understanding of pre-supernova evolution and explosion physics. 	
> 
> Wolfgang is also the developer of the python package specutils which some of you
> may know (affiliated package of astropy).

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