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BEGIN:VEVENT
UID:20260518T044226-04-5898dPKaOx@https://astronomia.uc.cl/2jucext1/institu
 toastrofisica/
DTSTAMP:20260518T084226Z
DESCRIPTION:                                                               
 Stellar variability in the Gaia Era: the Gaia DR3 harvest\n               
                                                                          G
 isella Clementini                                                INAF - Os
 servatorio di Astrofisica e Scienza dello Spazio (OAS)\, Bologna\n\n\nThe 
 last couple of decades have seen a true revolution in the field of stellar
  variability thanks to the increasing number of ground/space-based facilit
 ies and surveys that have been collecting multi-epoch photometry over larg
 e portions of the sky.\n\nA leading role in this revolution is played by G
 aia\, the  ESA cornerstone mission that monitors the whole sky since July 
 2014\,  obtaining astrometric parameters (positions\, parallaxes and prope
 r motions) and multi-epoch photometry in three different pass-bands (Gaia 
 G\, G_BP and G_RP) of sources down to a limiting magnitude  G = 21 mag. Th
 e spacecraft also simultaneously collects spectroscopy with the Radial Vel
 ocity Spectrometer (RVS) of the sources brighter that V ? 16 mag.\n\nIn th
 e first half of 2022\, the second instalment of Gaia third data release (D
 R3)\, will publish time series multi-band photometry and parameters for ab
 out 14 million sources and more that 20 different variability types. Epoch
  RVS radial velocities will be also released for about 2000 RR Lyrae stars
  and Cepheids.\n\nWe discuss some of the Gaia DR3 variability results\, fo
 cussing more specifically on the RR Lyrae stars and Cepheids\, in light of
  the impact these variable stars have on the definition of the cosmic dist
 ance ladder and the study of resolved stellar\npopulations in and beyond t
 he Milky Way. Future perspectives opened by upcoming new facilities such a
 s the Vera Rubin Observatory and spectrographs such as WEAVE\, MOONS and 4
 MOST will also be briefly considered. https://astronomia.uc.cl/2jucext1/in
 stitutoastrofisica/en/instituto/coloquios/event/489-stellar-variability-in
 -the-gaia-era-the-gaia-dr3-harvest-gisella-clementini
DTSTART:20210914T193000Z
DTEND:20210914T203000Z
LOCATION:Santiago Chile ()
SUMMARY:Stellar variability in the Gaia Era: the Gaia DR3 harvest - Gisella
  Clementini
URL:https://astronomia.uc.cl/2jucext1/institutoastrofisica/en/instituto/col
 oquios/event/489-stellar-variability-in-the-gaia-era-the-gaia-dr3-harvest-
 gisella-clementini
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