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A new method to retrieve the star formation history from white dwarf luminosity functions -- an application to the Gaia catalogue of nearby stars
Marco C Lam, Nicholas Rowell, Hon Wah Yeung
With the state-of-the-art Gaia astrometry, the number of confirmed white dwarfs has reached a few hundred thousand. We have reached the era where small features in the white dwarf…
Gaia Focused Product Release: Sources from Service Interface Function image analysis -- Half a million new sources in omega Centauri
Gaia Collaboration, K. Weingrill, A. Mints +400
Gaia's readout window strategy is challenged by very dense fields in the sky. Therefore, in addition to standard Gaia observations, full Sky Mapper (SM) images were recorded for ni…
Gaia Focused Product Release: Radial velocity time series of long-period variables
Gaia Collaboration, M. Trabucchi, N. Mowlavi +403
The third Gaia Data Release (DR3) provided photometric time series of more than 2 million long-period variable (LPV) candidates. Anticipating the publication of full radial-velocit…
The Age of the Galactic Stellar Halo from Gaia White Dwarfs
Mukremin Kilic, P. Bergeron, Kyra Dame +3
We use 156 044 white dwarf candidates with significant parallax measurements from the Gaia mission to measure the velocity dispersion of the Galactic disc; $(σ_U,σ_V,σ_W)…
Gaia Reveals Evidence for Merged White Dwarfs
Mukremin Kilic, N. C. Hambly, P. Bergeron +2
We use Gaia Data Release 2 to identify 13,928 white dwarfs within 100 pc of the Sun. The exquisite astrometry from Gaia reveals for the first time a bifurcation in the observed whi…
Get ready for Gaia: cool white dwarfs in common proper motion with Tycho stars
Nigel Hambly, Nick Rowell, Marco Lam
We discuss the Gaia Data Release 1 (September 2016) and preliminary work on maximising the benefit for cool white dwarf (WD) science in advance of the full parallax catalogue which…