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OATS-UNI/TS SEMINAR
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Speaker: Jonay González Hernández (Instituto de Astrofísica de Canarias, Spain)
Title: Origin of compact objects and supernovae
Date: Tuesday, December 17th, 2013
Time: 11:30
Venue: Villa Bazzoni
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Abstract I will present a review of my research in the field of X-ray
binaries from the point of view of companion stars of
compact objects and the information we can extract from the
detailed analysis of high-resolution optical spectra of these
companion stars. The main point is that the companion/secondary
star is close enough to the compact object to be able to
capture some of the matter ejected from the primary star
in different phases of its faster evolution, namely common
envelope phase and supernova explosion. Therefore, we try
to search for signatures of chemical anomalies that could
have been imprinted on secondary stars during the evolution
of X-ray binaries, with the aim of obtaining information
on the progenitor of these compact objects. I will then
give a brief summary of what we have done so far and our
latest results on this field.
Finally, the high-resolution spectroscopy allows us to
investigate the orbital period evolution in these X-ray
binary systems. I will also show our latest results on
this topic.
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Contact: Valentina D'Odorico (OATS)