PEP PACS Catalog Definitions

Overview

The PACS Evolutionary Probe (PEP, Lutz et al. 2011) is a Herschel guaranteed time deep extragalactic survey (KPGT_dlutz_1) targeting six among the most popular "blank fields", ten lensing clusters of galaxies, and two z ~1 clusters at wavelengths of 100, and 160 microns. PEP includes SPIRE observations of the two z ~1 clusters at wavelengths of 250, 350, and 500 microns. SPIRE coverage of all other fields is available from the HerMES survey (Oliver et al. 2010). In addition, deep SPIRE GOODS-N data are provided by the GOODS-Herschel program (Elbaz et al. 2011).

PEP used the Starfinder IDL code (Diolaiti et al. 2000a,b) to blindly extract the PACS catalogs, by means of PSF-fitting. PEP adopted the "direct" noise maps and extracted PSFs directly from the observed maps (see documentation). The released catalogs include all sources above a S/N threshold of 3 sigma, derived directly from the measured fluxes and flux uncertainties. Users should keep in mind that the error estimate does not take into account confusion noise. PEP recommends to use any flux below 0.6 mJy in the green band and below 2.0 mJy in the red band with care.

The GOODS-S 70 micron catalog omits the Field and Flag_PGH_* columns, and coverage has units of s/pix.

Name	Intype	Units	Description
IAU_NAME	char		IAU Name
Field	char		PEP field
ID_PACS_band	char		PACS band ID number
ra	double	deg	Right Ascension (J2000)
dec	double	deg	Declination (J2000)
X_IMAGE_band	double	pix	x pixel coordinate on PACS band image
Y_IMAGE_band	double	pix	y pixel coordinate on PACS band mosaic
XERR_IMAGE_band	double	pix	Uncertainty in X_IMAGE_band
YERR_IMAGE_band	double	pix	Uncertainty in Y_IMAGE_band
FLUX_band	double	Jy	PACS band flux density
FLUXERR_band	double	Jy	Uncertainty in FLUX_band
COVERAGE_band	double	pix	Coverage on PACS band image
FLAG_PGH_DETECTION_band	int		Flag for detection in the PGH GOODS-S maps (PGH = combined PEP and GOODS-Herschel dataset)
FLAG_PGH_AREA_band	int		Flag for coverage in the PGH GOODS-S maps