SEP MIPS 70 micron Point Source Catalog Definition

SEP Overview

The Spitzer/MIPS 24 and 70 μm imaging of an 11.5 square degree region near the South Ecliptic Pole (SEP) has been carried out in order to complement sub-millimeter wavelength observations (250-500 μm) of the same region of sky taken with the Balloon-borne Large Aperture Sub-millimeter Telescope (BLAST), with the goal of better characterizing the nature of sub-millimeter selected galaxies and their role in galaxy evolution. This field has also been extensively mapped at other wavelengths, and will be imaged from 100-500 μm as part of the Herschel Multi-tiered Extragalactic Survey (HerMES).

Complete documentation can be found in Scott et al. (2010); please reference this paper if you use these data in your research.

SEP MIPS 70 micron Point Source Catalog Criteria

Source detection and photometry were performed using the APEX software within the MOPEX package. Source candidates with S/N > 6 and reduced chi-squared values less than or equal to three (93% of the sources) are considered reliable detections. The remaining source candidates were then inspected (see Scott et al. 2010 for details) and false positives were removed from the catalog.

SEP MIPS 70 micron Point Source Catalog Column Descriptions

Gator serves the SEP MIPS 70 micron Point Source Catalog (18 columns, 891 data rows).

Name Intype Units Description
srcid int Source identification
ra double degree Right Ascension (J2000)
dec double degree Declination (J2000)
xc real pixels Mosaic x-coordinate for source
yc real pixels Mosaic y-coordinate for source
flux real microJy PRF-fitted flux density
delta_flux real microJy Uncertainty on PRF-fitted flux density
chi2_dof real chi^2/dof for PRF-fit
ps_chi2_dof real Partial chi^2/dof of one source (if passive deblending performed)
status int Status of fit:
-2 = Fitting converged; chi^2/dof > 3
-1 = Maximum number of iterations reached; chi^2/dof > 3
1 = Fitting converged; chi^2/dof < 3
2 = Maximum number of iterations reached; chi^2/dof < 3
SNR real Signal to noise ratio
deblend char Type of deblending performed:
N = no deblending
P = passif deblending
aperture1 real microJy Aperture photometry using 4-pixel (16 arcsec) radius (see Note)
aperture2 real microJy Aperture photometry using 7-pixel (28 arcsec) radius (see Note)
aperture3 real microJy Aperture photometry using 9-pixel (36 arcsec) radius (see Note)
ap_unc1 real microJy Uncertainty in flux for aperture1
ap_unc2 real microJy Uncertainty in flux for aperture2
ap_unc3 real microJy Uncertainty in flux for aperture3


Note

Uncorrected aperture fluxes are given. Aperture corrections are:
Aperture radius Correction
4 pixel 1.59
7 pixel 1.18
9 pixel 1.00