XGAPS: a sub-arcsecond cross-match of Galactic Plane Surveys

Abstract

We present a sub-arcsecond cross-match of Gaia Data Release 3 (DR3) against the INT Galactic Plane Surveys (IGAPS) and the United Kingdom Infrared Deep Sky Survey (UKIDSS). The resulting cross-match of Galactic Plane Surveys (XGAPS) provides additional precise photometry ($U_{RGO}$, $g$, $r$, $i$, H$\alpha$, $J$, $H$ and $K$) to the Gaia photometry. In building the catalogue, proper motions given in Gaia DR3 are wound back to match the epochs of the IGAPS constituent surveys (INT Photometric \ha Survey of the Northern Galactic Plane, IPHAS, and the UV-Excess Survey of the northern Galactic plane, UVEX) and UKIDSS, ensuring high proper motion objects are appropriately cross-matched. The catalogue contains 33,987,180 sources. The requirement of $>3\sigma$ parallax detection for every included source means that distances out to 1--1.5 kpc are well covered. In producing XGAPS we have also trained a Random Forest classifier to discern targets with problematic astrometric solutions. Selection cuts based on the classifier results can be used to clean colour-magnitude and colour-colour diagrams in a controlled and justified manner, as well as producing subsets of astrometrically reliable targets. We provide XGAPS as a 111 column table. Uses of the catalogue include the selection of Galactic targets for multi-object spectroscopic surveys as well as identification of specific Galactic populations.

arXiv commentAccepted for publication in MNRAS. 9 pages, 7 figures. Appendix with column description included. The full XGAPS catalogue will be available on VizieR, and is temporarily hosted on https://www.astro.dur.ac.uk/~simo/FINAL_XGAPS.fits

References in corpus (24)

• Gaia Data Release 2. Summary of the contents and survey properties
• The Gaia mission
• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• Gaia Data Release 2: The astrometric solution
• Gaia Early Data Release 3: The astrometric solution
• Gaia Early Data Release 3: Parallax bias versus magnitude, colour, and position
• Gaia Data Release 2: using Gaia parallaxes
• Gaia Data Release 2: Catalogue validation
• The UKIDSS Galactic Plane Survey
• The WFCAM Science Archive
• Gaia Early Data Release 3 -- Catalogue validation
• Gaia Early Data Release 3: The Gaia Catalogue of Nearby Stars
• 4MOST: Project overview and information for the First Call for Proposals
• The VST Photometric Halpha Survey of the Southern Galactic Plane and Bulge (VPHAS+)
• Gaia Data Release 2: processing of the photometric data
• Initial Data Release from the INT Photometric H-alpha Survey of the Northern Galactic Plane (IPHAS)
• Catalogue of new Herbig Ae/Be and classical Be stars. A machine learning approach to Gaia DR2
• The UV-Excess Survey of the Northern Galactic Plane (UVEX)
• IGAPS: the merged IPHAS and UVEX optical surveys of theNorthern Galactic Plane
• Astrometric excess noise in Gaia DR2 and the search for X-ray emitting binaries
• Astrometric excess noise in Gaia EDR3 and the search for X-ray binaries
• High resolution H-alpha imaging of the Northern Galactic Plane, and the IGAPS images database
• The Gaia/IPHAS and Gaia/KIS Value-Added Catalogues
• Population-based identification of Hα-excess sources in the Gaia DR2 and IPHAS catalogues