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<p>Buenas tardes, </p>
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<p> les recordamos que <b>mañana 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 <b>Dr. Joseph
Anderson</b> (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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