Information on Service 'The Gaia-PS1-SDSS (GPS1) Proper Motion Catalog'

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Further access options are discussed below

This catalog combines Gaia DR1, Pan-STARRS 1, SDSS and 2MASS astrometry to compute proper motions for 350 million sources across three-fourths of the sky down to a magnitude of mr≈20. Positions of galaxies from Pan-STARRS 1 are used to build a reference frame for PS1, SDSS, and 2MASS data. Gaia DR1 is adapted to that reference frame by exploiting that locally, proper motions are linear.

GPS1 has a characteristic systematic error of less than 0.3 mas/yr, and a typical precision of 1.5−2.0 mas/yr. The proper motions have been validated using galaxies, open clusters, distant giant stars and QSOs. In comparison with other published faint proper motion catalogs, GPS1's systematic error (<0.3 mas/yr) is about 10 times better than that of PPMXL and UCAC4 (>2.0 mas/yr). Similarly, its precision (~1.5 mas/yr) is an improvement by ∼ 4 times relative to PPMXL and UCAC4 (∼6.0 mas/yr). For QSOs, the precision of GPS1 is found to be worse (∼2.0−3.0 mas/yr), possibly due to their particular differential chromatic refraction (DCR).

For a list of all services and tables belonging to this service's resource, see Information on resource 'The Gaia-PS1-SDSS (GPS1) Proper Motion Catalog'

Overview

You can access this service using:

This service is published as follows:

local means it is listed on our front page, ivo_managed means it has a record in the VO registry.

Input Fields

The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):

NameTable Head DescriptionUnitUCD
DEC Delta (ICRS) Declination (ICRS decimal) deg pos.eq.dec
hscs_pos Position/Name Coordinates (as h m s, d m s or decimal degrees), or SIMBAD-resolvable object N/A N/A
hscs_sr Search radius Search radius in arcminutes N/A N/A
magr mag r r-band PSF magnitude from Pan-STARRS1 DR1 mag phot.mag;em.opt.R
MAXREC Match limit Maximum number of records returned. Pass 0 to retrieve service parameters. N/A N/A
MAXREC Match limit Maximum number of records returned. Pass 0 to retrieve service parameters. N/A N/A
MAXREC Match limit Maximum number of records returned. Pass 0 to retrieve service parameters. N/A N/A
obj_id ID Unique object identifier (this is not the Pan-STARRS1 identifier). N/A meta.id;meta.main
RA Alpha (ICRS) Right Ascension (ICRS decimal) deg pos.eq.ra
RESPONSEFORMAT Output Format File format requested for output. N/A meta.code.mime
RESPONSEFORMAT Output Format File format requested for output. N/A meta.code.mime
RESPONSEFORMAT Output Format File format requested for output. N/A meta.code.mime
SR Search Radius Search radius deg N/A
VERB Verbosity Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns. N/A N/A
VERB Verbosity Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns. N/A N/A
VERB Verbosity Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns. N/A N/A

Default Output Fields

The following fields are contained in the output by default. More fields may be available for selection; these would be given below in the VOTable output fields.

NameTable Head DescriptionUnitUCD
chi2pmde χ² PM δ Reduced χ² for the robust fit of proper motion in Declination N/A stat.fit.chi2;pos.pm;pos.eq.dec
chi2pmde_ps χ² PM δ Reduced χ² for the Pan-STARRS 1-only fit of proper motion in Declination N/A stat.fit.chi2;pos.pm;pos.eq.dec
chi2pmra χ² PM α Reduced χ² for the robust fit of proper motion in RA N/A stat.fit.chi2;pos.pm;pos.eq.ra
d_g d(G) Distance between position in GPS1 and the associated (closest) position in Gaia DR1 (not accounting for the epoch difference). arcsec arith.diff;pos.eq
d_ps1 d(PS1) Distance between position in GPS1 and the associated (closest) position in Pan-STARRS1 used for (not accounting for the epoch difference). arcsec arith.diff;pos.eq
dec Dec Declination from fit (ICRS, Epoch J2010). Note p deg pos.eq.dec;meta.main
dec_ps1 Dec_PS1 Declination from Pan-STARRS1 deg pos.eq.dec
e_dec Err. Dec Error in Declination from Gaia DR1. Note p deg stat.error;pos.eq.dec;meta.main
e_magg E. mag g Error in g-band PSF magnitude from Pan-STARRS1 DR1 mag stat.error;phot.mag;em.opt.V
e_maggaia E. mag G Error in G-band magnitude from Gaia mag stat.error;phot.mag;em.opt.V
e_magh E. mag H Error in H-band magnitude from 2MASS mag stat.error;phot.mag;em.ir.H
e_magi E. mag i Error in i-band PSF magnitude from Pan-STARRS1 DR1 mag stat.error;phot.mag;em.opt.I
e_magj E. mag J Error in J-band magnitude from 2MASS mag stat.error;phot.mag;em.ir.J
e_magk E. mag K Error in K_s-band magnitude from 2MASS mag stat.error;phot.mag;em.ir.K
e_magr E. mag r Error in r-band PSF magnitude from Pan-STARRS1 DR1 mag stat.error;phot.mag;em.opt.R
e_magy E. mag y Error in y-band PSF magnitude from Pan-STARRS1 DR1 mag stat.error;phot.mag;em.opt.I
e_magz E. mag z Error in z-band PSF magnitude from Pan-STARRS1 DR1 mag stat.error;phot.mag;em.opt.I
e_pmde Err. PM δ Error of proper motion in Declination; robust fit. deg/yr stat.error;pos.pm;pos.eq.dec
e_pmra Err. PM α Error of proper motion in RA, cos(δ) applied; robust fit. deg/yr stat.error;pos.pm;pos.eq.ra
e_ra Err. RA Error in Right Ascension from Gaia DR1. Note p deg stat.error;pos.eq.ra;meta.main
magg mag g g-band PSF magnitude from Pan-STARRS1 DR1 Note c mag phot.mag;em.opt.V
maggaia mag G G-band magnitude from Gaia Note c mag phot.mag;em.opt.V
magh mag H H-band magnitude from 2MASS Note c mag phot.mag;em.ir.H
magi mag i i-band PSF magnitude from Pan-STARRS1 DR1 Note c mag phot.mag;em.opt.I
magj mag J J-band magnitude from 2MASS Note c mag phot.mag;em.ir.J
magk mag K K_s-band magnitude from 2MASS Note c mag phot.mag;em.ir.K
magr mag r r-band PSF magnitude from Pan-STARRS1 DR1 Note c mag phot.mag;em.opt.R
magy mag y y-band PSF magnitude from Pan-STARRS1 DR1 Note c mag phot.mag;em.opt.I
magz mag z z-band PSF magnitude from Pan-STARRS1 DR1 Note c mag phot.mag;em.opt.I
n_obs N_obs number of all the detections. N/A meta.number;obs
obj_id ID Unique object identifier (this is not the Pan-STARRS1 identifier). N/A meta.id;meta.main
pmde PM δ Proper motion in Declination; robust fit. deg/yr pos.pm;pos.eq.dec
pmde_ng PM δ_ng Proper motion in Declination; fit without Gaia. deg/yr pos.pm;pos.eq.dec
pmde_ps PM δ_ps Proper motion in Declination; fit with only Pan-STARRS. deg/yr pos.pm;pos.eq.dec
pmde_x PM δ_x Proper motion in Declination; x-validation fit. deg/yr pos.pm;pos.eq.dec
pmra PM α Proper motion in RA with cos(δ) applied; robust fit. deg/yr pos.pm;pos.eq.ra
pmra_ng PM α_ng Proper motion in RA with cos(δ) applied; fit without Gaia. deg/yr pos.pm;pos.eq.ra
pmra_ps PM α_ps Proper motion in RA with cos(δ) applied; fit with only Pan-STARRS. deg/yr pos.pm;pos.eq.ra
pmra_x PM α_x Proper motion in RA with cos(δ) applied; x-validation fit. deg/yr pos.pm;pos.eq.ra
ra RA Right Ascension from fit (ICRS, Epoch J2010). Note p deg pos.eq.ra;meta.main
ra_ps1 RA_PS1 Right Ascension from Pan-STARRS1 deg pos.eq.ra
surveys Sources Sum of source codes for the source catalogues that went into this row. Pan-STARRS is always present. Source codes: 5 -- 2MASS; 10 -- SDSS, 20 -- Gaia. N/A meta.code

VOTable Output Fields

The following fields are available in VOTable output. The verbosity level is a number intended to represent the relative importance of the field on a scale of 1 to 30. The services take a VERB argument. A field is included in the output if their verbosity level is less or equal VERB*10.

NameTable Head DescriptionUnitUCD Verb. Level
obj_id ID Unique object identifier (this is not the Pan-STARRS1 identifier). N/A meta.id;meta.main 1
ra RA Right Ascension from fit (ICRS, Epoch J2010). Note p deg pos.eq.ra;meta.main 1
dec Dec Declination from fit (ICRS, Epoch J2010). Note p deg pos.eq.dec;meta.main 1
e_ra Err. RA Error in Right Ascension from Gaia DR1. Note p deg stat.error;pos.eq.ra;meta.main 1
e_dec Err. Dec Error in Declination from Gaia DR1. Note p deg stat.error;pos.eq.dec;meta.main 1
ra_ps1 RA_PS1 Right Ascension from Pan-STARRS1 deg pos.eq.ra 1
dec_ps1 Dec_PS1 Declination from Pan-STARRS1 deg pos.eq.dec 1
pmra PM α Proper motion in RA with cos(δ) applied; robust fit. deg/yr pos.pm;pos.eq.ra 5
pmde PM δ Proper motion in Declination; robust fit. deg/yr pos.pm;pos.eq.dec 5
magg mag g g-band PSF magnitude from Pan-STARRS1 DR1 Note c mag phot.mag;em.opt.V 5
magr mag r r-band PSF magnitude from Pan-STARRS1 DR1 Note c mag phot.mag;em.opt.R 5
magi mag i i-band PSF magnitude from Pan-STARRS1 DR1 Note c mag phot.mag;em.opt.I 5
magz mag z z-band PSF magnitude from Pan-STARRS1 DR1 Note c mag phot.mag;em.opt.I 5
magy mag y y-band PSF magnitude from Pan-STARRS1 DR1 Note c mag phot.mag;em.opt.I 5
magj mag J J-band magnitude from 2MASS Note c mag phot.mag;em.ir.J 5
magh mag H H-band magnitude from 2MASS Note c mag phot.mag;em.ir.H 5
magk mag K K_s-band magnitude from 2MASS Note c mag phot.mag;em.ir.K 5
maggaia mag G G-band magnitude from Gaia Note c mag phot.mag;em.opt.V 5
e_pmra Err. PM α Error of proper motion in RA, cos(δ) applied; robust fit. deg/yr stat.error;pos.pm;pos.eq.ra 15
e_pmde Err. PM δ Error of proper motion in Declination; robust fit. deg/yr stat.error;pos.pm;pos.eq.dec 15
pmra_x PM α_x Proper motion in RA with cos(δ) applied; x-validation fit. deg/yr pos.pm;pos.eq.ra 15
pmde_x PM δ_x Proper motion in Declination; x-validation fit. deg/yr pos.pm;pos.eq.dec 15
pmra_ng PM α_ng Proper motion in RA with cos(δ) applied; fit without Gaia. deg/yr pos.pm;pos.eq.ra 15
pmde_ng PM δ_ng Proper motion in Declination; fit without Gaia. deg/yr pos.pm;pos.eq.dec 15
pmra_ps PM α_ps Proper motion in RA with cos(δ) applied; fit with only Pan-STARRS. deg/yr pos.pm;pos.eq.ra 15
pmde_ps PM δ_ps Proper motion in Declination; fit with only Pan-STARRS. deg/yr pos.pm;pos.eq.dec 15
chi2pmra χ² PM α Reduced χ² for the robust fit of proper motion in RA N/A stat.fit.chi2;pos.pm;pos.eq.ra 15
chi2pmde χ² PM δ Reduced χ² for the robust fit of proper motion in Declination N/A stat.fit.chi2;pos.pm;pos.eq.dec 15
chi2pmde_ps χ² PM δ Reduced χ² for the Pan-STARRS 1-only fit of proper motion in Declination N/A stat.fit.chi2;pos.pm;pos.eq.dec 15
e_magg E. mag g Error in g-band PSF magnitude from Pan-STARRS1 DR1 mag stat.error;phot.mag;em.opt.V 15
e_magr E. mag r Error in r-band PSF magnitude from Pan-STARRS1 DR1 mag stat.error;phot.mag;em.opt.R 15
e_magi E. mag i Error in i-band PSF magnitude from Pan-STARRS1 DR1 mag stat.error;phot.mag;em.opt.I 15
e_magz E. mag z Error in z-band PSF magnitude from Pan-STARRS1 DR1 mag stat.error;phot.mag;em.opt.I 15
e_magy E. mag y Error in y-band PSF magnitude from Pan-STARRS1 DR1 mag stat.error;phot.mag;em.opt.I 15
e_magj E. mag J Error in J-band magnitude from 2MASS mag stat.error;phot.mag;em.ir.J 15
e_magh E. mag H Error in H-band magnitude from 2MASS mag stat.error;phot.mag;em.ir.H 15
e_magk E. mag K Error in K_s-band magnitude from 2MASS mag stat.error;phot.mag;em.ir.K 15
e_maggaia E. mag G Error in G-band magnitude from Gaia mag stat.error;phot.mag;em.opt.V 15
n_obs N_obs number of all the detections. N/A meta.number;obs 15
surveys Sources Sum of source codes for the source catalogues that went into this row. Pan-STARRS is always present. Source codes: 5 -- 2MASS; 10 -- SDSS, 20 -- Gaia. N/A meta.code 15
d_ps1 d(PS1) Distance between position in GPS1 and the associated (closest) position in Pan-STARRS1 used for (not accounting for the epoch difference). arcsec arith.diff;pos.eq 15
d_g d(G) Distance between position in GPS1 and the associated (closest) position in Gaia DR1 (not accounting for the epoch difference). arcsec arith.diff;pos.eq 15
e_pmra_x Err. PM α_x Error of proper motion in RA, cos(δ) applied; x-validation fit. deg/yr stat.error;pos.pm;pos.eq.ra 25
e_pmde_x Err. PM δ_x Error of proper motion in Declination; x-validation fit. deg/yr stat.error;pos.pm;pos.eq.dec 25
e_pmra_ng Err. PM α_ng Error of proper motion in RA, cos(δ) applied; fit without Gaia. deg/yr stat.error;pos.pm;pos.eq.ra 25
e_pmde_ng Err. PM δ_ng Error of proper motion in Declination; fit without Gaia. deg/yr stat.error;pos.pm;pos.eq.dec 25
e_pmra_ps Err. PM α_ps Error of proper motion in RA, cos(δ) applied; fit with only Pan-STARRS. deg/yr stat.error;pos.pm;pos.eq.ra 25
e_pmde_ps Err. PM δ_ps Error of proper motion in Declination; fit with only Pan-STARRS. deg/yr stat.error;pos.pm;pos.eq.dec 25
chi2pmra_ps χ² PM α_ps Reduced χ² for the Pan-STARRS 1-only fit of proper motion in RA N/A stat.fit.chi2;pos.pm;pos.eq.ra 25
n_obsps1 N(PS1) Number of PS1 SeasonAVG detections. N/A meta.number;obs 25

VOResource XML (that's something exclusively for VO nerds)

Note c

Pan-STARRS, 2MASS, and Gaia photometry was re-added to the objects via a blind crossmatch; it does not necessarily correspond to the photometry of the objects that were used to derive the astrometry, in particular in crowded fields.

Note p

The positions are SeasonAVGs from Pan-STARRS1 if unvailable from Gaia DR1. The errors are NULL in these cases.

The Data Center is currently running in emergency mode after our database server failed catastrophically (see our blog for infos and updates).

This means, in particular, that services built on top of large tables may currently be broken. Since our replacement server is much slower than our usual machine, restoring them will take quite some time.

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