Spitzer Matching survey of the UltraVISTA ultra-deep Stripes (SMUVS): Full-mission IRAC Mosaics and Catalogs

TL;DR

The SMUVS survey provides deep, high-sensitivity IRAC imaging of the COSMOS field's UltraVISTA stripes, resulting in extensive catalogs of sources valuable for cosmological research.

Contribution

This work presents new deep IRAC mosaics and catalogs for the COSMOS field, with improved data reduction techniques and high source sensitivity, expanding available data for cosmological studies.

Findings

Reaches 25.0 AB mag sensitivity at 3.6 and 4.5 microns

Catalogs contain about 350,000 sources with significant IRAC detection

Coverage of approximately 0.66 square degrees with high uniformity

Abstract

This paper describes new deep 3.6 and 4.5 micron imaging of three UltraVISTA near-infrared survey stripes within the COSMOS field. The observations were carried out with Spitzer's Infrared Array Camera (IRAC) for the Spitzer Matching Survey of the Ultra-VISTA Deep Stripes (SMUVS). In this work we present our data reduction techniques, and document the resulting mosaics, coverage maps, and catalogs in both IRAC passbands for the three easternmost UltraVISTA survey stripes, covering a combined area of about 0.66 square degrees, of which 0.45 square degrees have at least 20 hr integration time. SMUVS reaches point-source sensitivities of about 25.0 AB mag at both 3.6 and 4.5 microns with a significance of 4-sigma accounting for both survey sensitivity and source confusion. To this limit the SMUVS catalogs contain a total of about 350,000 sources, each of which is detected significantly in at least one IRAC band. Because of its uniform and high sensitivity, relatively large area coverage, and the wide array of ancillary data available in COSMOS, the SMUVS survey will be useful for a large number of cosmological investigations. We will make all images and catalogues described herein publicly available via the Spitzer Science Center.