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VERSION:2.0
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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20221110T103000
DTEND;TZID=Atlantic/Canary:20221110T113000
UID:iactalks-1627
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1627
CREATED:2022-11-10T10:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Pristine stars in the Milky-Way and beyond
DESCRIPTION:Pristine stars in the Milky-Way and beyond\nDr. Vanessa Hill\n\
 nTo understand the early phases of galaxy formation, metal-poor stars in t
 he local universe play a special rôle, allowing to trace both how ga
 lactic assembly proceeds, and the conditions in which early star formation
  proceed. Metal-poor stars in our Galaxy and its satellites are fossils of
  these past processes and have therefore been the subject of intense dedic
 ated searches and surveys since decades. Here I shall review some of the r
 ecent results that the « Pristine » narrow-band photometric su
 rvey at CFHT, has enabled, aided by the transformational information broug
 ht by the Gaia space mission. These results range from enravelling a very 
 primordial disc in the Milky-Way, characterizing very pristine streams of 
 stars in the galactic halo, and characterizing the co-existing halo and bu
 lge populations in the inner parts of the Milky-Way.  Finally, I will outl
 ine the plans to characterise further these extreme and very metal-poor st
 ars with the new WEAVE multi-object facility that should start its science
  surveys early 2023.\n \n\nTo understand the early phases of galaxy f
 ormation, metal-poor stars in the local universe play a special rôle
 , allowing to trace both how galactic assembly proceeds, and the condition
 s in which early star formation proceed. Metal-poor stars in our Galaxy an
 d its satellites are fossils of these past processes and have therefore be
 en the subject of intense dedicated searches and surveys since decades. He
 re I shall review some of the recent results that the « Pristine &ra
 quo; narrow-band photometric survey at CFHT, has enabled, aided by the tra
 nsformational information brought by the Gaia space mission. These results
  range from enravelling a very primordial disc in the Milky-Way, character
 izing very pristine streams of stars in the galactic halo, and characteriz
 ing the co-existing halo and bulge populations in the inner parts of the M
 ilky-Way. \nFinally, I will outline the plans to characterise further thes
 e extreme and very metal-poor stars with the new WEAVE multi-object facili
 ty that should start its science surveys early 2023.\n
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