Column Data Type Description
casjobsid int Internal ID for the table
objid int GALEX identifier for the source
photoextractid int Pointer to GALEX photoExtract Table (identifier of original observation)
mpstype str Survey type ("AIS")
avaspra float R.A. of center of field where object was measured (degrees)
avaspdec float Declination of center of field where object was measured (degrees)
fexptime float FUV exposure time (seconds)
nexptime float NUV exposure time (seconds)
ra float Source's right ascension (degrees)
dec float Source's declination (degrees)
glon float Source's Galactic longitude (degrees)
glat float Source's Galactic latitude (degrees)
tilenum int "Tile" number
img int Image number (exposure number for visits)
subvisit int Number of subvisit if exposure was divided
fov_radius float Distance of source from center of the field in which it was measured
type int Obs. type (0=single, 1=multi)
band int Band number (1=NUV, 2=FUV, 3=both)
e_bv float E(B-V) Galactic reddening from Schlegel et al. 1998 maps)
istherespectrum bool Does this object have a GALEX spectrum?
chkobj_type int Astrometry check type
fuv_mag float FUV calibrated magnitude
fuv_magerr float FUV calibrated magnitude error
nuv_mag float NUV calibrated magnitude
nuv_magerr float NUV calibrated magnitude error
fuv_mag_auto float FUV Kron-like elliptical aperture magnitude
fuv_magerr_auto float FUV rms error for AUTO magnitude
nuv_mag_auto float NUV Kron-like elliptical aperture magnitude
nuv_magerr_auto float NUV rms error for AUTO magnitude
fuv_mag_aper_4 float FUV magnitude aperture (8 pixel)
fuv_magerr_aper_4 float FUV magnitude error aperture (8 pixel)
nuv_mag_aper_4 float NUV magnitude aperture (8 pixel)
nuv_magerr_aper_4 float NUV magnitude error aperture (8 pixel)
fuv_mag_aper_6 float FUV magnitude aperture (17 pixel)
fuv_magerr_aper_6 float FUV magnitude error aperture (17 pixel)
nuv_mag_aper_6 float NUV magnitude aperture (17 pixel)
nuv_magerr_aper_6 float NUV magnitude error aperture (17 pixel)
fuv_artifact int FUV artifact flag (logical OR near source)
nuv_artifact int NUV artifact flag (logical OR near source)
fuv_flags int FUV extraction flags
nuv_flags int NUV extraction flags
fuv_flux float FUV calibrated flux (microJansky)
fuv_fluxerr float FUV calibrated flux error (microJansky)
nuv_flux float NUV calibrated flux (microJansky)
nuv_fluxerr float NUV calibrated flux error (microJansky)
fuv_x_image float FUV object position along x
fuv_y_image float FUV object position along y
nuv_x_image float NUV object position along x
nuv_y_image float NUV object position along y
fuv_fwhm_image float FUV FWHM assuming a Gaussian core
nuv_fwhm_image float NUV FWHM assuming a Gaussian core
fuv_fwhm_world float FUV FWHM assuming a Gaussian core (WORLD units)
nuv_fwhm_world float NUV FWHM assuming a Gaussian core (WORLD units)
nuv_class_star float NUV Star/Galaxy classifier
fuv_class_star float FUV Star/Galaxy classifier
nuv_ellipticity float NUV (1. - B_IMAGE/A_IMAGE)
fuv_ellipticity float FUV (1. - B_IMAGE/A_IMAGE)
nuv_theta_j2000 float NUV position angle (east of north) (J2000)
nuv_errtheta_j2000 float NUV position angle error (east of north) (J2000)
fuv_theta_j2000 float FUV position angle (east of north) (J2000)
fuv_errtheta_j2000 float FUV position angle error (east of north) (J2000)
fuv_ncat_fwhm_image float FUV FWHM_IMAGE value from -fd-ncat.fits (pixels)
fuv_ncat_flux_radius_3 float FUV FLUX_RADIUS using Aperture
nuv_kron_radius float NUV Kron apertures in units of A or B
nuv_a_world float NUV profile rms along major axis (world units)
nuv_b_world float NUV profile rms along minor axis (world units)
fuv_kron_radius float FUV Kron apertures in units of A or B
fuv_a_world float FUV profile rms along major axis (world units)
fuv_b_world float FUV profile rms along minor axis (world units)
nuv_weight float NUV effective exposure (flat-field response value) in seconds at the source position (central pixel)
fuv_weight float FUV effective exposure (flat-field response value) in seconds at the source position (central pixel)
prob float Probability of the FUV-NUV cross-match
sep float Separation between the FUV and NUV position of the source in the same observation
nuv_poserr float Position error of the source in the NUV image (arcseconds)
fuv_poserr float Position error of the source in the FUV image (arcseconds)
ib_poserr float Inter-band position error (arcseconds)
nuv_pperr float NUV Poisson position error (the part of the position error due to counting statistics)
fuv_pperr float FUV Poisson position error (the part of the position error due to counting statistics)
CorV char Whether the source comes from a coadd or visit
gRank int 0=No other sources from diff. observations within 2.5 arcsec, 1=This is the best source within 2.5 arcsec, -1=This is a primary but has a better source within 2.5 arcsec, n(>1)=This is the n'th source within 2.5 arcsec of the primary
ngrank int If this is a primary, the number of sources within 2.5 arcsec, otherwise this is set to 99 or 89.
primgid int OBJID of the primary (only used in the "plus" catalog
groupgid str OBJID's of all AIS sources within 2.5 arcseconds concatenated by a "+"
grankdist int Same for GRANK, but based on distance criterion
ngrankdist int Same for NGRANK, but based on distance criterion
primgiddist int Same for PRIMGID, but based on distance criterion (OBJID of the closest primary)
groupgiddist str Same for GROUPGID, but based on distance criterion
groupgidtot str OBJID's of all sources within 2.5 arcseconds
difffuv float FUV magnitude difference between primary and secondary (only used for "plus" catalog)
diffnuv float NUV magnitude difference between primary and secondary (only used for "plus" catalog)
difffuvdist float FUV magnitude difference between primary and secondary, but based on distance criterion (only used for "plus" catalog)
diffnuvdist float NUV magnitude difference between primary and secondary, but based on distance criterion (only used for "plus" catalog)
sepas float Separation between primary and secondary (arcseconds)
sepasdist float Separation between primary and secondary, but based on distance criterion (arcseconds)
inlargeobj str Is source in the footprint of an extended object? 'N' if no, if yes: "XX:" where "XX" is one of "GA" (galaxy), "GC" (globular cluster), "OC" (open cluster), or "SC" (other stellar clusters)
largeobjsize float Size of the extended object, set to D25 for galaxies, 2xR_1 for stellar clusters, or 0 if INLARGEOBJ is set to 'N'