Parameters and IR excesses of Gaia DR1 stars

DOI

Effective temperatures and luminosities are calculated for 1,475,921 Tycho-2 and 107,145 Hipparcos stars, based on distances from Gaia Data Release 1. Parameters are derived by comparing multi-wavelength archival photometry to BT-Settl model atmospheres. The 1-sigma uncertainties for the Tycho-2 and Hipparcos stars are +/-137K and +/-125K in temperature and +/-35 per cent and +/-19 per cent in luminosity. The luminosity uncertainty is dominated by that of the Gaia parallax. Evidence for infrared excess between 4.6 and 25 microns is found for 4256 stars, of which 1883 are strong candidates. These include asymptotic giant branch (AGB) stars, Cepheids, Herbig Ae/Be stars, young stellar objects, and other sources. We briefly demonstrate the capabilities of this dataset by exploring local interstellar extinction, the onset of dust production in AGB stars, the age and metallicity gradients of the solar neighbourhood and structure within the Gould Belt. We close by discussing the potential impact of future Gaia data releases.

Cone search capability for table J/MNRAS/471/770/table1 (Tycho-Gaia astrometric solution)

Cone search capability for table J/MNRAS/471/770/table2 (Hipparcos-Gaia astrometric solution)

Cone search capability for table J/MNRAS/471/770/table3 (Stars with infrared excess)

Identifier
DOI http://doi.org/10.26093/cds/vizier.74710770
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/471/770
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/471/770
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/471/770
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/471/770
Provenance
Creator McDonald I.; Zijlstra A. A.; Watson R.A.
Publisher CDS
Publication Year 2017
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Natural Sciences; Observational Astronomy; Physics