The Extended Gaia–PS1–SDSS (GPS1+) Proper Motion Catalog
Publish Time:2020-06-30
The Gaia + PanSTARRS1 (PS1) + Sloan Digital Sky Survey (SDSS) + Two Micron All-Sky Survey (2MASS) (GPS1) catalog was released in 2017. It delivered precise proper motions for around 350 million sources down to a magnitude of r ~ 20 mag. In this release, the author presents GPS1+, the extension GPS1 catalog down to r ~ 22.5 mag, based on Gaia data release 2 (DR2), PS1, SDSS, and 2MASS astrometry. GPS1+ totally provides proper motions for ∼400 million sources with a characteristic systematic error of less than 0.1 mas yr−1. This catalog is divided into two subsamples, i.e., the primary and secondary parts. The primary ∼264 million sources have either or both Gaia and SDSS astrometry, with a typical precision of 2.0–5.0 mas yr−1. The secondary ∼136 million sources only have PS1 astrometry, where the average precision is worse than 15.0 mas yr−1. All the proper motions have been validated using QSOs and the existing Gaia proper motions.
· Data access ·
 
INTRODUCTION
Keywords
GPS 1;catalog , proper motion , astrometry
CONTACT AUTHOR
Author
Haijun Tian
Email
hjtian(at)lamost.org
Institution
China Three Gorges University, Yichang 443002, People’s Republic of China
CONTACT PUBLISHER
Email
support(at)china-vo.org
Phone
+86-10-64807973
Institution
National Astronomical Data Center
TAGS
waveband
Infrared
Optical
subject
Cosmology and Galaxies
Star and Interstellar Matter
Fundmental Astronomy
data type
Catalog Data
production age
1980-
content level
Research