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DTSTART;TZID=Atlantic/Canary:20220531T123000
DTEND;TZID=Atlantic/Canary:20220531T133000
UID:iactalks-1554
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1554
CREATED:2022-05-31T12:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Astrophysical Parameters in Gaia DR3
DESCRIPTION:Astrophysical Parameters in Gaia DR3\nDr. Orlagh Creevey\n\nGai
 a Data Release 3 (13 June 2022) contains astrophysical parameters for up t
 o 1.5 billion sources derived from the low resolution BP and RP prism spec
 tra, the high resolution RVS spectra, photometry and astrometry. \nThese i
 nclude object classifications (star, galaxy, stellar spectral type,...), u
 nresolved galaxies and quasar redshifts (~6 million), outlier objects, int
 erstellar medium characterisation (extinction and DIBs), and  spectroscopi
 c and evolutionary parameters (~470 million) for a large variety of stella
 r types from ultra-cool dwarfs to hot OB stars.\nIn this talk, I will pres
 ent an overview of the astrophysical parameter content of Gaia DR3 that wa
 s derived using the Astrophysical Parameters Inference System (Apsis) soft
 ware.  I will first give a brief description of the data, models and metho
 ds that were employed, and then I will focus on describing what type of pa
 rameters you can find in the archive and where to find them among the 30+ 
 new tables.  I will then describe the overall performance and present some
  pre-Gaia DR3 highlights.\n
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