WG2 Workshop: Stellar variability, stellar multiplicity: periodicity in time & motion

The WG2 workshop will be in-person/ hybrid in Sofia, BG, and will be held June 6 - 8, 2023

NEW: Deadline for abstracts: 8 May 2023

NEW: Deadline for on-site participation registration: 8 May 2023

Full details are available on the meeting webpage

Outline of the workshop

Stellar variability, intrinsic as in pulsating stars and extrinsic as in binaries, plays a crucial role in many fields of astrophysics, from stellar evolution, to the distance scale, to the study of structure and formation of the Milky Way. Gaia DR3 published light curves and characteristic parameters for about 10.5 million variable sources. This number is expected to increase by several folds in DR4. The workshop will specifically focus on the impact that Gaia is having on a number of different fields addressed by stellar variability.

Outline Programme

  • Setting the scene: ** Invited talk reviewing the papers on variable star classifications and light curves in the Gaia-DR3
    ** Special Issue published in A&A
  • Classical pulsating stars (Cepheids, RRL, delta Sct...) ** Theoretical efforts in the modelling of Cepheids and RR Lyrae properties in the Gaia band ** From Gaia distances to stellar physics in pulsating stars ** Metallicities of Gaia DR3 RR Lyrae stars
  • Eclipsing binaries, pulsating stars in eclipsing binary stars (e.g. binarity of Cepheids and RR Lyrae stars), disentangling methods, binaries in clusters, use of binary stars in astrophysics
  • Chemically peculiar stars, magnetic CP stars, using BP/RP Gaia spectra
  • Long Period Variables
  • Early stages of evolution: T Tau, FU Ori etc.
  • Structure of the our Galaxy ** RR Lyrae stars as tracers of the structure and formation of the Milky Way halo ** Cepheids to trace the disc and the spiral arms of the Milky Way
  • Synergies and connections between Gaia and other surveys of variable stars (OGLE, LSST, ZTF, etc.)

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