Crossmatch RAVE DR5 and HSOY (ravedr5.rave_hsoy)

The table has 501593 rows, 30 columns.


A crossmatch of RAVE_DR5 and the Hot Stuff for One Year (HSOY) catalog. Only stars from HSOY with comp=0 were taken to remove all possible ambiguities.

The RAVE_HSOY table contains the match of RAVE observations with a unique match (ipix = ID_PPMXL) and comp=0 to the corresponding PPMXL object in HSOY. The aim of HSOY is to provide improved proper motions partly based on Gaia data, allowing some studies to be carried out just now or as pilot studies for later larger projects requiring higher-precision data. The HSOY catalogue was compiled using the positions taken from Gaia-DR1 combined with the input data from the PPMXL catalogue, employing the same weighted least-squares technique that was used to assemble the PPMXL catalogue itself. Results. This effort resulted in a four-parameter astrometric catalogue containing 583,000,000 objects, with Gaia-DR1 quality positions and proper motions with precisions from significantly less than 1 mas/yr to 5 mas/yr, depending on the object's brightness and location on the sky. (


Funding for RAVE has been provided by: the Australian Astronomical Observatory; the Leibniz-Institut für Astrophysik Potsdam (AIP); the Australian National University; the Australian Research Council; the French National Research Agency; the German Research Foundation (SPP 1177 and SFB 881); the European Research Council (ERC-StG 240271 Galactica); the Istituto Nazionale di Astrofisica at Padova; The Johns Hopkins University; the National Science Foundation of the USA (AST-0908326); the W. M. Keck foundation; the Macquarie University; the Netherlands Research School for Astronomy; the Natural Sciences and Engineering Research Council of Canada; the Slovenian Research Agency; the Swiss National Science Foundation; the Science & Technology Facilities Council of the UK; Opticon; Strasbourg Observatory; and the Universities of Groningen, Heidelberg and Sydney. Based on data products from observations made with ESO Telescopes at the La Silla Paranal Observatory under programme ID 188.B3002.


Name Type UCD Unit Description
rave_obs_id char Unique Identifier for RAVE objects, Observation Date, Fieldname, Fibernumber
ipix long The PPMXL object identifier, which in turn is the q3c ipix of the original USNO-B object; for HSOY, only (ipix, comp) is a unique identifier (primary key). The recommended identifier form is 'HSOY ipix.comp, where comp=0 for NULL comps. This is what the SCS generates.
comp short meta.code.multip If non-null this indicates that multiple Gaia objects matched the PPMXL object; this may indicate bona fide multiple stars, but more likely is due to failed matching of Gaia observations at different epochs. In both cases, proper motions must be used with care. The index is artificial, i.e., no primary, secondary, etc, is implied. ipix+comp together are a primary key to hsoy.main.
raj2000 double pos.eq.ra
deg Right Ascension J2000.0, epoch 2000.0
dej2000 double pos.eq.dec
deg Declination J2000.0, epoch 2000.0
e_raepra float stat.error
deg Mean error in RA*cos(delta) at mean epoch
e_deepde float stat.error
deg Mean error in Dec at mean epoch
pmra float
deg/yr Proper Motion in RA*cos(delta)
pmde float
deg/yr Proper Motion in Dec
e_pmra float stat.error
deg/yr Mean error in pmRA*cos(delta)
e_pmde float stat.error
deg/yr Mean error in pmDE
epra float time.epoch
yr Mean Epoch (RA)
epde float time.epoch
yr Mean Epoch (Dec)
jmag float phot.mag
mag J selected default magnitude from 2MASS
e_jmag float stat.error
mag J total magnitude uncertainty
hmag float phot.mag
mag H selected default magnitude from 2MASS
e_hmag float stat.error
mag H total magnitude uncertainty
kmag float phot.mag
mag K_s selected default magnitude from 2MASS
e_kmag float stat.error
mag K_s total magnitude uncertainty
b1mag float phot.mag
mag B mag from USNO-B, first epoch
b2mag float phot.mag
mag B mag from USNO-B, second epoch
r1mag float phot.mag
mag R mag from USNO-B, first epoch
r2mag float phot.mag
mag R mag from USNO-B, second epoch
imag float phot.mag
mag I mag from USNO-B
magsurveys char meta.code Surveys the USNO-B magnitudes are taken from
nobs short meta.number
Number of observations contributing to this column (always nobs(ppmxl)+1)
gaia_id long Unique source identifier
phot_g_mean_mag float phot.mag
mag Mean magnitude in the G band from Gaia DR1. Magnitudes for which err_flux/flux>0.1 have been dropped.
e_phot_g_mean_mag float stat.error
s**-1 Estimated error in Gaia G-band magnitude. This is estimated as 1.09*err_flux/flux which is good as a symmetric 1 σ-error of the magnitude to at least within a few percent when err_flux/flux is smaller than 0.1, as it is for the HSOY objects.
clone short meta.code.qual If 1, more than one PPMXL object matched to this Gaia object (i.e.: proper motion is probably wrong, any apparent duplicity is probably spurious). This is normally due to failed matching of objects from different plates in USNO-B.