Searching for low-redshift faint galaxies with MMT/Hectospec

Abstract

We present redshifts for 2753 low-redshift galaxies between $0.03\lesssim z_{\mathrm{spec}}\lesssim 0.5$ with 18 $\le$ $r$ $\le$ 22 obtained with Hectospec at the Multi-Mirror Telescope (MMT). The observations targeted the XMM-LSS, ELAIS-N1 and DEEP2-3 fields, each of which covers $\sim$ 1 deg${}^2$. These fields are also part of the recently completed CFHT Large Area U-band Deep Survey (CLAUDS) and on-going Hyper Suprime-Cam deep fields surveys. The efficiency of our technique for selecting low-redshift galaxies is confirmed by the redshift distribution of our sources. In addition to redshifts, these high S/N spectra are used to measure ages, metallicities, and nuclear activity levels. In combination with the photometric catalogue in $u$, $g$, $r$, $i$, $z$, $y$ down to 27 AB mag, we are able to study the galaxy population down to stellar masses of $\sim$ 10${}^8{M}_{\odot }$ . This paper presents the observational strategy, the reduction procedure and properties of the galaxy sample.

14 pages, 13 figures, accepted by The Astrophysical Journal Supplement Series. The redshift catalog can be accessed from http://mips.as.arizona.edu/~cnaw/Faint_Low_z/ or https://github.com/chengchengcode/low-redshift-galaxies

References in corpus (22)

• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• The 2.5 m Telescope of the Sloan Digital Sky Survey
• The Host Galaxies and Classification of Active Galactic Nuclei
• The Cosmic Evolution Survey (COSMOS) -- Overview
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• An ultra-deep near-infrared spectrum of a compact quiescent galaxy at z=2.2
• zCOSMOS: A Large VLT/VIMOS redshift survey covering 0 < z < 3 in the COSMOS field
• The Mass-Metallicity and the Fundamental Metallicity Relation revisited on a fully Te-based abundance scale for galaxies
• The VIMOS Ultra-Deep Survey: ~10,000 galaxies with spectroscopic redshifts to study galaxy assembly at early epochs 2<z<~6
• The Quenching of the Ultra-Faint Dwarf Galaxies in the Reionization Era
• The SAGA Survey. II. Building a Statistical Sample of Satellite Systems around Milky Way-like Galaxies
• Green Valley Galaxies
• Prime Focus Spectrograph (PFS) for the Subaru Telescope: Overview, recent progress, and future perspectives
• The Sloan Digital Sky Survey Stripe 82 Imaging Data: Depth-Optimized Co-adds Over 300 Deg^2 in Five Filters
• HELP: The Herschel Extragalactic Legacy Project
• Beyond UVJ: More Efficient Selection of Quiescent Galaxies With UV / Mid-IR Fluxes
• Evaluation of probabilistic photometric redshift estimation approaches for The Rubin Observatory Legacy Survey of Space and Time (LSST)
• UVI colour gradients of 0.4<z<1.4 star-forming main sequence galaxies in CANDELS: dust extinction and star formation profiles
• The Next Generation Virgo Cluster Survey (NGVS). XXIV. The Red Sequence to $\sim$10${}^6$ L${}_{\odot }$ and Comparisons with Galaxy Formation Models
• Galaxy And Mass Assembly (GAMA): Blue spheroids within 87 Mpc
• VICS82: the VISTA-CFHT Stripe 82 near-infrared survey
• The HectoMAP Redshift Survey: First Data Release

Cited by in corpus (1)

• Combining the CLAUDS & HSC-SSP surveys: U+grizy(+YJHKs) photometry and photometric redshifts for 18M galaxies in the 20 deg2 of the HSC-SSP Deep and ultraDeep fields