GPIPS DR4 Unique Star Catalog Definitions
Overview
The Galactic Plane Infrared Polarization Survey (GPIPS) covers 76 deg^2 of the first Galactic quadrant midplane, 18≤l≤56 deg and -1≤b≤+1 deg, in H-band (1.6 micron) linear polarimetry to reveal the plane-of-the-sky orientation of the magnetic field in diffuse and denser atomic and molecular clouds. The Survey consists of 3237 overlapping 10x10 arcmin fields observed using the Mimir instrument on the 1.8 m Perkins telescope.
The unique star data file (Clemens et al. 2020) collects all GPIPS photometry and polarimetry and all matching stellar data appropriate to each GPIPS star. The unique star file contains entries for 13,861,329 GPIPS stars.
GPIPS cross-matched to the VizieR versions (I/345/gaia2, II/246/out, II/328, and II/293/glimpse) of the Gaia DR2, 2MASS PSC, and AllWISE catalogs, and to VizieR's concatenation of the GLIMPSE I Catalog and GLIMPSE I Archive (along with GLIMPSE II and GLIMPSE 3D, neither of which have coverage overlapping with GPIPS). GPIPS uses the VizieR column names for the cross-matched columns.
If you use GPIPS data, please cite Clemens et al. (2020).
| Name | Intype | Units | Description |
|---|---|---|---|
| NUM | long | RA-ordered star serial number | |
| DESIG_GPIPS | char | GPIPS designation | |
| ra | double | deg | Right Ascension (J2000) |
| dec | double | deg | Declination (J2000) |
| GAL_L | double | deg | Galactic longitude |
| GAL_B | double | deg | Galactic latitude |
| GPSTAR | char | Array of FOV*1e5+stellar ID number for each observation | |
| CAT_FLAG | char | Array of catalog information summary flags: see table | |
| H_MAG | double | mag | Mimir H-band photometric magnitude |
| SHMAG | double | mag | Internal uncertainty in H-band magnitude |
| SPHOT | double | mag | External H-mag uncertainty (see Clemens et al. 2012c) |
| H_VAR | long | Variability flag for overlapping FOVs: if any pair-wise photometric differences exceed 10 sigma, H_VAR was set to 1, otherwise it was set to zero. | |
| P | double | % | Debiased polarization percentage |
| SP | double | % | Uncertainty in polarization percentage |
| PA_DEG | double | deg | Polarization position angle E of N |
| GPA_DEG | double | deg | Galactic position angle |
| SPA | double | deg | Uncertainty in position angles |
| Q | double | % | Stokes Q (%), normalized by Stokes I |
| SQ | double | % | Uncertainty in Stokes Q |
| U | double | % | Stokes U (%), normalized by Stokes I |
| SU | double | % | Uncertainty in Stokes U |
| NHWP | long | Number of HWP images in which the star appears | |
| UF | long | Usage flag: see Clemens et al. (2012) for details. | |
| DESIG_GAIA | char | Gaia DR2 designation | |
| DESIG_2MASS | char | 2MASS PSC designation | |
| DESIG_GLIMPSE | char | GLIMPSE designation. VizieR version is a concatenation of the GLIMPSE I Catalog and GLIMPSE I Archive (along with GLIMPSE II and GLIMPSE 3D, neither of which have coverage overlapping with GPIPS). | |
| DESIG_WISE | char | AllWISE designation | |
| PAR | double | marcsec | Gaia DR2 parallax |
| PARERR | double | marcsec | Uncertainty in parallax |
| GMAG | double | mag | Gaia DR2 g-band photometric magnitude |
| GMAGERR | double | mag | Uncertainty in g-band magnitude (column added by VizieR) |
| PMRA | double | marcsec/yr | Gaia DR2 proper motion along RA |
| PMRAERR | double | marcsec/yr | Uncertainty in RA proper motion |
| PMDEC | double | marcsec/yr | Gaia DR2 proper motion along Dec |
| PMDECERR | double | marcsec/yr | Uncertainty in Dec proper motion |
| J_2MASS | double | mag | 2MASS PSC J-band photometric magnitude |
| SJ2MASS | double | mag | Uncertainty in J-band magnitude |
| H_2MASS | double | mag | 2MASS PSC H-band photometric magnitude |
| SH2MASS | double | mag | Uncertainty in H-band magnitude |
| K_2MASS | double | mag | 2MASS PSC K-band photometric magnitude |
| SK2MASS | double | mag | Uncertainty in K-band magnitude |
| B36MAG | double | mag | GLIMPSE IRAC 3.6 micron photometric magnitude |
| E_B36MAG | double | mag | Uncertainty in 3.6 micron magnitude |
| B45MAG | double | mag | GLIMPSE IRAC 4.5 micron photometric magnitude |
| E_B45MAG | double | mag | Uncertainty in 4.5 micron magnitude |
| B58MAG | double | mag | GLIMPSE IRAC 5.8 micron photometric magnitude |
| E_B58MAG | double | mag | Uncertainty in 5.8 micron magnitude |
| B80MAG | double | mag | GLIMPSE IRAC 8 micron photometric magnitude |
| E_B80MAG | double | mag | Uncertainty in 8 micron magnitude |
| W1MAG | double | mag | AllWISE Band 1 3.4 micron photometric magnitude |
| E_W1MAG | double | mag | Uncertainty in AllWISE Band 1 magnitude |
| W2MAG | double | mag | AllWISE Band 2 4.6 micron photometric magnitude |
| E_W2MAG | double | mag | Uncertainty in AllWISE Band 2 magnitude |
| W3MAG | double | mag | AllWISE Band 3 12 micron photometric magnitude |
| E_W3MAG | double | mag | Uncertainty in AllWISE Band 3 magnitude |
| W4MAG | double | mag | AllWISE Band 4 22 micron photometric magnitude |
| E_W4MAG | double | mag | Uncertainty in AllWISE Band 4 magnitude |
Catalog Flag Table
| Entry Number | Additive Score | Description |
|---|---|---|
| 1 | 1 | GPIPS POLCAT star was matched |
| 2 | 1 | Gaia DR2 star was matched |
| 2 | Gaia DR2 PARERR not upper limit | |
| 4 | Gaia DR2 GMAGERR not upper limit | |
| 8 | Gaia DR2 PMRAERR not upper limit | |
| 16 | Gaia DR2 PMDECERR not upper limit | |
| 3 | 1 | 2MASS PSC star was matched |
| 2 | 2MASS PSC SJ2MASS not upper limit | |
| 4 | 2MASS PSC SH2MASS not upper limit | |
| 8 | 2MASS PSC SK2MASS not upper limit | |
| 4 | 1 | GLIMPSE star was matched. VizieR version is a concatenation of the GLIMPSE I Catalog and GLIMPSE I Archive (along with GLIMPSE II and GLIMPSE 3D, neither of which have coverage overlapping with GPIPS). |
| 2 | GLIMPSE E_B36MAG not upper limit | |
| 4 | GLIMPSE E_B58MAG not upper limit | |
| 8 | GLIMPSE E_B58MAG not upper limit | |
| 16 | GLIMPSE E_B80MAG not upper limit | |
| 5 | 1 | AllWISE star was matched |
| 2 | AllWISE E_W1MAG not upper limit | |
| 4 | AllWISE E_W2MAG not upper limit | |
| 8 | AllWISE E_W3MAG not upper limit | |
| 16 | AllWISE E_W4MAG not upper limit |