SpUDS Overview

Spitzer Public Legacy Survey of the UKIDSS Ultra Deep Survey (SpUDS) is a survey of the ~1 square degree UKIDSS Ultra Deep Survey (UDS). The survey consists of deep IRAC and 24 micron MIPS observations. The UDS is the largest deep near-infrared (JHK) survey in existence, and the first capable of sampling representative cosmological volumes (100x100 Mpc) out to the highest redshifts (z>6).

SpUDS IRAC Catalog Column Descriptions

IRSA serves the SpUDS IRAC Catalog (26 columns, 70,534 data rows).

Name	Intype	Units	Description
name	char		Name
ra	double	deg	Right Ascension (J2000)
dec	double	deg	Declination (J2000)
unc_ra	double	arcsec	Uncertainty in RA
unc_dec	double	arcsec	Uncertainty in Dec
flux_ap_36	double	uJy	Flux in 1.9" aperture in ch1
uncf_ap_36	double	uJy	Uncertainty in flux_ap_36
snr_36	double		S/N at ch1 S/N is set to zero if less than 3
star_36	double		Stellarity at ch1
flag_36	int		Flag from SExtractor
flag_ext_36	int		External flag: 1 = Bright neighbors 2 = Affected by artifacts due to nearby bright stars
flux_ap_45	double	uJy	Flux in 1.9" aperture in ch2
uncf_ap_45	double	uJy	Uncertainty in flux_ap_45
snr_45	double		S/N at ch2 S/N is set to zero if less than 3
star_45	double		Stellarity at ch2
flag_45	int		Flag from SExtractor
flux_ap_56	double	uJy	Flux in 1.9" aperture in ch3
uncf_ap_56	double	uJy	Uncertainty in flux_ap_56
snr_56	double		S/N at ch3 S/N is set to zero if less than 3
star_56	double		Stellarity at ch3
flag_56	int		Flag from SExtractor
flux_ap_80	double	uJy	Flux in 1.9" aperture in ch4
uncf_ap_80	double	uJy	Uncertainty in flux_ap_80
snr_80	double		S/N at ch4 S/N is set to zero if less than 3
star_80	double		Stellarity at ch4
flag_80	int		Flag from SExtractor