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<p>Buenas tardes,</p>
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<p> les informamos que <b>el próximo miércoles 6 de noviembre a
las 12h</b>, se brindará el Seminario FCAG <b>"Core-collapse
supernovae and their parent stellar populations"</b>, en el
Salón Meridiano. El mismo estará a cargo del Dr. Joseph Anderson
(European Southern Observatory). A continuación, les dejamos el
resumen y los datos de conexión para aquellos que no puedan
acercarse al Salón Meridiano.</p>
<p><b><span
style="color: rgb(0, 0, 0); background-color: transparent; font-style: normal; font-variant: normal; text-decoration: underline; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;">Resumen:</span></b><span
style="color: rgb(0, 0, 0); background-color: transparent; font-weight: 400; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> </span>Core-collapse
supernovae (CCSNe) are the explosive deaths of massive
(>8-10Msun) stars. A large diversity is seen in the observed
<br>
light curves and spectra of CCSNe, which arises from the final
chemical composition and density profile of the pre-SN
progenitor star before explosion. This final state depends on
the initial conditions of the system - mass, metallicity, and
binarity, determining the stellar evolutionary pathway through
which the progenitor evolves and loses mass. Constraints on
initial progenitor properties can be obtained through observing
the host environment where different SN types are discovered.
This requires assumptions on the properties of the star
formation within host galaxies/environments, such as the IMF,
the star formation efficiency, and the effects of feedback. One
can also invert this line of reasoning: assume properties of
CCSN progenitors and use their frequency within different
galaxies/environments to constrain the star formation therein.
In this seminar, I will first summarise the historical
literature that we have published using observations of the
parent stellar populations to constrain CCSN progenitors;
specifically differences in mass and metallicity between SN
types II and 'stripped-envelope'. I will show how these same
data have been used to argue for top-heavy IMFs in the central
regions of interacting galaxies from the radial distribution of
CCSNe. I will then introduce the AMUSING survey: a dataset of
>700 SN host galaxies observed with the MUSE integral field
unit spectrograph at the VLT. The use of MUSE affords an
analysis of both the host-HII regions of SN progenitors between
different SN types, but also a comparison of the distribution of
CCSN HII region properties (~100) with all other such HII
regions (~7000) within the full sample. This has produced the
surprising result that CCSNe appear to explode much more
frequently in star-forming regions of lower metallicity - per
unit star formation - than the general HII region population. I
will present several possibilities to explain this result - all
of which (if valid) would have a profound impact on our
understanding of the explosion of massive stars and/or massive
star formation. <br>
Finally, as Head of the Office for Science of ESO in Chile, I
will present a few slides on ESO's current and future
facilities, and the opportunities for collaboration at the
ESO-Chile campus in Vitacura, Santiago.<br>
<br>
</p>
<b style="font-weight:normal;"
id="docs-internal-guid-341d8b54-7fff-bdc4-ab7e-0ad2d515e481">
<p dir="ltr"
style="line-height:1.2;text-align: justify;margin-top:0pt;margin-bottom:0pt;"><span
style="color: rgb(0, 0, 0); background-color: transparent; font-weight: 700; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Datos de conexión:</span></p>
<p dir="ltr"
style="line-height:1.2;text-align: justify;margin-top:0pt;margin-bottom:0pt;"><span
style="color: rgb(0, 0, 0); background-color: transparent; font-weight: 400; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Unirse a la reunión zoom:</span><a
href="https://us02web.zoom.us/j/89642687970"
style="text-decoration:none;" moz-do-not-send="true"><span
style="color: rgb(0, 0, 0); background-color: transparent; font-weight: 400; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> </span><span
style="color: rgb(17, 85, 204); background-color: transparent; font-weight: 400; font-style: normal; font-variant: normal; text-decoration: underline; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;">https://us02web.zoom.us/j/89642687970</span></a></p>
<p dir="ltr"
style="line-height:1.2;text-align: justify;margin-top:0pt;margin-bottom:0pt;"><span
style="color: rgb(0, 0, 0); background-color: transparent; font-weight: 400; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">ID de reunión: 896 4268 7970</span></p>
<p dir="ltr"
style="line-height:1.2;text-align: justify;margin-top:0pt;margin-bottom:0pt;"><span
style="color: rgb(0, 0, 0); background-color: transparent; font-weight: 400; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Código de acceso: 526656</span></p>
<p dir="ltr"
style="line-height:1.2;text-align: justify;margin-top:12pt;margin-bottom:12pt;"><span
style="color: rgb(0, 0, 0); background-color: transparent; font-weight: 700; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">A fin de reducir el uso de residuos plásticos, les solicitamos que se acerquen con sus propias tazas para el café. </span><span
style="color: rgb(0, 0, 0); background-color: transparent; font-weight: 400; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Aunque este seminario será en formato híbrido, esperamos contar con su presencia.</span></p>
<p dir="ltr"
style="line-height:1.2;text-align: justify;margin-top:12pt;margin-bottom:12pt;"><span
style="color: rgb(0, 0, 0); background-color: transparent; font-weight: 400; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">Saludos,</span></p>
<p dir="ltr"
style="line-height:1.2;text-align: justify;margin-top:12pt;margin-bottom:12pt;"><span
style="color: rgb(0, 0, 0); background-color: transparent; font-weight: 400; font-style: normal; font-variant: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">SeCyT-FCAG</span></p>
</b>--
<pre class="moz-signature" cols="72">Secretaría de Ciencia y Técnica
Facultad de Ciencias Astronómicas y Geofísicas
Horario de atención: lunes a viernes de 8hs a 15hs</pre>
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