Catalog Definitions

Overview

The SPHEREx List of Ice Sources is a compilation of nearly nine million spatially isolated, IR-bright point sources likely to exhibit ice absorption features when observed by NASA's SPHEREx mission. Because of its well-defined and broad-based selection, based on bright all-sky broadband photometry, SPLICES targets are accessible to observatories all over the Earth for followup to characterize e.g., YSOs, protoplanetary disks, and other identified objects (variable sources, carbon stars) in concert with the multi-epoch SPHEREx 0.75-5.0 micron spectrophotometry.

If you use SPLICES data, please cite both the journal article Ashby et al. (2023) and the dataset Digital Object Identifier (DOI): https://doi.org/10.26131/IRSA554.

Name Intype Units Description
source_id long SPLICES source ID
designation char Source Designation
ra double deg Right Ascension (J2000)
dec double deg Declination (J2000)
GAL_LONG double deg Galactic Longitude
GAL_LAT double deg Galactic Latitude
tmassdesignation char 2MASS source designation
tmassra double deg 2MASS right ascension
tmassdec double deg 2MASS declination
J float mag 2MASS J magnitude
Jerr float mag 2MASS J magnitude uncertainty
H float mag 2MASS H magnitude
Herr float mag 2MASS H magnitude uncertainty
K float mag 2MASS K magnitude
Kerr float mag 2MASS K magnitude uncertainty
ph_qual char 2MASS photometric quality flag
rd_flg int 2MASS rd_flg
prox double arcsec 2MASS prox value
W1 float mag WISE band 1 magnitude
W1err float mag WISE band 1 magnitude uncertainty
W2 float mag WISE band 2 magnitude
W2err float mag WISE band 2 magnitude uncertainty
W3 float mag WISE band 3 magnitude
W3err float mag WISE band 3 magnitude uncertainty
W4 float mag WISE band 4 magnitude
W4err float mag WISE band 4 magnitude uncertainty
cc_flags char WISE cc_flags
ext_flg int WISE ext_flg
var_flg char WISE var_flg
IRAC_designation char IRAC source designation
ra_IRAC double deg IRAC right ascension
dec_IRAC double deg IRAC declination
mag3_6 float mag IRAC 3.6 micron magnitude
d3_6m float mag IRAC 3.6 micron magnitude uncertainty
mag4_5 float mag IRAC 4.5 micron magnitude
d4_5m float mag IRAC 4.5 micron magnitude uncertainty
mag5_8 float mag IRAC 5.8 micron magnitude
d5_8m float mag IRAC 5.8 micron magnitude uncertainty
mag8_0 float mag IRAC 8.0 micron magnitude
d8_0m float mag IRAC 8.0 micron magnitude uncertainty
SEL_TYPE char Source selection method
CLASS_1 char Source Class
YSO_PUB int Publication source of YSO classification
STYPE_ML char Machine Learning Source Class
STYPE_ML_PROB1 double Machine Learning Source Type Probability Stage 1
STYPE_ML_PROB2 double Machine Learning Source Type Probability Stage 2
NAME char Proper Name
Gaia_DR3 long Gaia DR3 source designation
GaiaDR3_G float mag Gaia G band magnitude
GaiaDR3_Gerr double mag Gaia G band magnitude uncertainty
GaiaDR3_B float mag Gaia B band magnitude
GaiaDR3_Berr double mag Gaia B band magnitude
GaiaDR3_R float mag Gaia R band magnitude
GaiaDR3_Rerr double mag Gaia R band magnitude
Plx double mas Gaia parallax
e_Plx float mas Gaia parallax uncertainty
pmra double mas.yr**-1 Right ascension proper motion
pmra_err float mas.yr**-1 Right ascension proper motion uncertainty
pmdec double mas.yr**-1 Declination proper motion
pmdec_err float mas.yr**-1 Declination proper motion uncertainty
Dist float pc Distance derived by Gaia
e_Dist_upper float pc Upper limit of distance 68% confidence range
e_Dist_lower float pc Lower limit of distance 68% confidence range
CLASSvar char Source Class from variability analysis
W1var int W1 variability flag
W1var_CLASS char W1 variability class
W2var int W2 variability flag
W2var_CLASS char W2 variability class
W1VARAVG double mag NEOWISE W1 mean mag
W2VARAVG double mag NEOWISE W2 mean mag
W1VARAMP double mag NEOWISE W1 variability amplitude
W2VARAMP double mag NEOWISE W2 variability amplitude
Av double mag Estimate of Av from H-W2 or K-W2
MC char Molecular Cloud name
MC_Lon double deg Galactic longitude of cloud sightline
MC_Lat double deg Galactic latitude of cloud sightline
MC_Dist double pc Distance of cloud
MC_AvF double mag Foreground Av to cloud
MC_Los char Position class
numGaiaNB int Number of Gaia sources <7.6 arcsec from target
maxRmag float mag Maximum Gaia R mag of neighbors
sumRflux double uJy Sum of Gaia R band fluxes of neighbors
mainRflux double uJy SPLICES target Gaia R flux
fluxratioGaia double % Ratio of bkgnd Gaia flux to SPLICES source flux
minGaiaDist float arcsec Distance to nearest Gaia neighbor
minDistGaiaFlux double uJy Flux of nearest Gaia neighbor
NoC double Number of clouds along the line of sight (Dame et al.)
NoC_gl double deg Galactic longitude of Dame et al. pixel
NoC_gb double deg Galactic latitude of Dame et al. pixel
numIRACnbors int Number of IRAC sources <7.6 arcsec from target
minDistIRAC float arcsec Distance of closest neighbor
I1mag float mag I1 mag of SPLICES target
maxI1mag float mag I1 mag of brightest neighbor
sumI1flux double uJy Sum of I1 neighbor fluxes
mainI1flux double uJy I1 Flux of SPLICES target
minDistI1flux double uJy I1 Flux of closest neighbor
I2mag float mag I2 mag of SPLICES target
maxI2mag float mag I2 mag of brightest neighbor
sumI2flux double uJy Sum of I2 neighbor fluxes
mainI2flux double uJy I2 Flux of SPLICES target
minDistI2flux double uJy I2 Flux of closest neighbor
fluxratioI1 double % Ratio of bkgnd I1 flux to SPLICES source flux
fluxratioI2 double % Ratio of bkgnd I2 flux to SPLICES source flux
numVVVneighbors int Number of VVV sources <7.6 arcsec from target
minDistVVV float arcsec Distance to nearest VVV neighbor
VVVJmag float mag VVVJ mag of SPLICES target
maxVVVJmag float mag VVVJ mag of brightest nearby source
sumVVVJflux double uJy Sum of VVVJ fluxes of background sources
mainVVVJflux double uJy J band Flux of SPLICES source
minDistVVVJFlux double uJy Flux of nearest VVVJ background source
VVVHmag float mag VVVH mag of SPLICES target
maxVVVHmag float mag VVVH mag of brightest nearby source
sumVVVHflux double uJy Sum of VVVH fluxes of background sources
mainVVVHflux double uJy H band Flux of SPLICES source
minDistVVVHFlux double uJy Flux of nearest VVVH background source
VVVKmag float mag VVVK band mag of SPLICES source
maxVVVKmag float mag VVVK mag of brightest nearby source
sumVVVKflux double uJy Sum of VVVK fluxes of background sources
mainVVVKflux double uJy K band Flux of SPLICES source
minDistVVVKFlux double uJy Flux of nearest VVVK background source
fluxratioVVVJ double % Ratio of bkgnd VVVJ flux to SPLICES source flux
fluxratioVVVH double % Ratio of bkgnd VVVH flux to SPLICES source flux
fluxratioVVVK double % Ratio of bkgnd VVVK flux to SPLICES source flux
numUKSnbors int Number of UKIDSS sources <7.6 arcsec from target
minDistUKS float arcsec Distance to closest UKIDSS neighbor
UKSJmag float mag UKSJ band mag of SPLICES source
maxUKSJmag float mag UKSJ mag of brightest nearby source
sumUKSJflux double uJy Sum of UKSJ fluxes of background sources
mainUKSJflux double uJy J band Flux of SPLICES source
minDistUKSJFlux double uJy Flux of nearest UKSJ background source
UKSHmag float mag UKSH band mag of SPLICES source
maxUKSHmag float mag UKSH mag of brightest nearby source
sumUKSHflux double uJy Sum of UKSH fluxes of background sources
mainUKSHflux double uJy H band Flux of SPLICES source
minDistUKSHFlux double uJy Flux of nearest UKSH background source
UKSKmag float mag UKSK band mag of SPLICES source
maxUKSKmag float mag UKSK mag of brightest nearby source
sumUKSKflux double uJy Sum of UKSK fluxes of background sources
mainUKSKflux double uJy K band Flux of SPLICES source
minDistUKSKFlux double uJy Flux of nearest UKSK background source
fluxratioUKSJ double % Ratio of bkgnd UKSJ flux to SPLICES source flux
fluxratioUKSH double % Ratio of bkgnd UKSH flux to SPLICES source flux
fluxratioUKSK double % Ratio of bkgnd UKSK flux to SPLICES source flux
VarClassGaia char Gaia Variability best class
VarClassGaiaSc double Score of the best Gaia class
SV_W1 char NEOWISE W1 short-term variability flag
SV_W1_V double Number of W1 variable short-term epoch
SV_W1_T double Number of W1 total short-term epochs
SV_W2 char NEOWISE W2 short-term variability flag
SV_W2_V double Number of W2 variable short-term epochs
SV_W2_T double Number of W2 total short-term epochs