English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present a catalogue of distances, masses and ages for $\sim3$ millionstars in the second Gaia data release with spectroscopic parameters availablefrom the large spectroscopic surveys: APOGEE, Gaia-ESO, GALAH, LAMOST, RAVE andSEGUE. We use a Bayesian framework to characterise the probability densityfunctions of distance, mass and age using photometric, spectroscopic andastrometric information, supplemented with spectroscopic masses where availablefor giant stars. Furthermore, we provide posterior extinction estimates ($A_V$)to every star using published extinction maps as a prior input. We provide anappendix with extinction coefficients for Gaia photometry derived from stellarmodels, which account for variation with intrinsic colour and total extinction.Our pipeline provides output estimates of the spectroscopic parameters, whichcan be used to inform improved spectroscopic analysis. We complement ourcatalogues with Galactocentric coordinates and actions with associateduncertainties. As a demonstration of the power of our catalogue, we producevelocity dispersion profiles of the disc separated by age and Galactocentricradius (between $3$ and $15\,\mathrm{kpc}$ from the Galactic centre). Thissuggests that the velocity dispersion profiles flatten with radius in the outerGalaxy ($>8\,\mathrm{kpc}$) and that at all radii the velocity dispersionfollows the smooth power law with age observed in the solar neighbourhood.

Isochrone ages for ~3 million stars with the second Gaia data release