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DTSTART;TZID=Atlantic/Canary:20231214T103000
DTEND;TZID=Atlantic/Canary:20231214T113000
UID:iactalks-1715
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1715
CREATED:2023-12-14T10:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:What is triggering star formation in Very Young Galaxies in the loc
 al Universe?
DESCRIPTION:What is triggering star formation in Very Young Galaxies in the
  local Universe?\nDr. Marina Trevisan\n\nIn  the local Universe, there are
  a handful of dwarf star-forming galaxies  that are young, having formed a
  large fraction of their stellar mass  during their last few hundred Myr. 
 However, little is known about the  fraction of young stellar populations 
 in more massive galaxies. Using  the data from the Sloan Digital Sky Surve
 y, we identified a surprisingly  large sample of more massive, very young 
 galaxies (VYGs), defined to  have formed at least 50 per cent of their ste
 llar mass within the last 1  Gyr. In this seminar, I will present our stud
 y on the fractions,  properties and environment of low-redshift VYGs in ob
 servations and  simulations, discuss possible mechanisms responsible for t
 he recent  triggering of intense star formation activity in these systems,
  and  argue that VYGs can be useful in constraining the uncertainties in b
 oth  galaxy formation models and spectral modelling of galaxy star formati
 on  histories.
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