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X-WR-CALNAME:Osservatorio Astrofisico di Catania
X-ORIGINAL-URL:https://www.oact.inaf.it
X-WR-CALDESC:Eventi per Osservatorio Astrofisico di Catania
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DTSTART:20260101T000000
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BEGIN:VEVENT
DTSTART;TZID=UTC:20260223T113000
DTEND;TZID=UTC:20260223T123000
DTSTAMP:20260414T113528
CREATED:20260217T114411Z
LAST-MODIFIED:20260217T114440Z
UID:19430-1771846200-1771849800@www.oact.inaf.it
SUMMARY:Inferring past accretion bursts from asteroseismic imprints
DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Monday\, February 23\, 11:30 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER:Johannes Jørgensen (Innsbruck University) \nABSTRACT:Stars form during the collapse of dense molecular cloud cores. However\, most of their final mass comes from the ensuing protostellar disk\, owing to non-zero angular momentum in the cloud. Here\, the protostar gains up to 50% of its final mass in episodic bursts of mass accretion\, while having quiescent phases between the bursts. In this presentation I present a study of how the occurrence of such bursts may be inferred using asteroseismology – the study of stellar pulsations. Specifically\, I show how these intense episodes leave a detectable asteroseismic imprint in the deep stellar interior. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration.
URL:https://www.oact.inaf.it/event/inferring-past-accretion-bursts-from-asteroseismic-imprints/
LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania
CATEGORIES:Eventi & Seminari
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