Validating TGAS wide binaries with Gaia DR2 Radial Velocities and Parallaxes

Abstract

Featuring greatly improved astrometry and precise radial velocities (RVs), the second data release (DR2) from Gaia affords us a unique opportunity to test the validity of samples of stellar wide binaries. In a previous work, we presented a set of wide binaries identified in the joint Tycho-Gaia Astrometric Solution catalog. Here, we use DR2 to confirm the low contamination rate of this sample, thereby verifying the effectiveness of our algorithm for application to DR2 data.

arXiv commentAccepted for publication in Research Notes of the AAS

References in corpus (4)

• Gaia Data Release 1: Astrometry - one billion positions, two million proper motions and parallaxes
• Wide Binaries in Tycho-{\it Gaia}: Search Method and the Distribution of Orbital Separations
• Wide Binaries in Tycho-Gaia II: Metallicities, Abundances, and Prospects for Chemical Tagging
• The crucial role of higher-order multiplicity in wide binary formation: A case study using the $\beta$-Pictoris moving group

Cited by in corpus (10)

• The SUPERWIDE Catalog: A Catalog of 99,203 Wide Binaries Found in Gaia and Supplemented by the SUPERBLINK High Proper Motion Catalog
• Testing Gravity with wide binary stars like $\alpha$ Centauri
• A catalog of wide binary and multiple systems of bright stars from Gaia-DR2 and the Virtual Observatory
• Testing Modified Gravity with Wide Binaries in GAIA DR2
• NGTS-7Ab: An ultra-short period brown dwarf transiting a tidally-locked and active M dwarf
• Using APOGEE Wide Binaries to Test Chemical Tagging with Dwarf Stars
• A new line on the wide binary test of gravity
• The GALAH survey: Co-orbiting stars and chemical tagging
• Directly testing gravity with Proxima Centauri
• Catalogue of wide binary, trinary and quaternary candidates from the Gaia data release 2 (region $\left|b\right|>25°$)