Systematically Measuring Ultra-Diffuse Galaxies (SMUDGes). II. Expanded Survey Description and the Stripe 82 Catalog

Abstract

We present 226 large ultra-diffuse galaxy (UDG) candidates ($r_e>5.3$\arcsec, ${\mu }_{0,g}>24$ mag arcsec${}^{-2}$) in the SDSS Stripe 82 region recovered using our improved procedure developed in anticipation of processing the entire Legacy Surveys footprint. The advancements include less constrained structural parameter fitting, expanded wavelet filtering criteria, consideration of Galactic dust, estimates of parameter uncertainties and completeness based on simulated sources, and refinements of our automated candidate classification. We have a sensitivity $\sim$1 mag fainter in ${\mu }_{0,g}$ than the largest published catalog of this region. Using our completeness-corrected sample, we find that (1) there is no significant decline in the number of UDG candidates as a function of ${\mu }_{0,g}$ to the limit of our survey ($\sim$ 26.5 mag arcsec${}^{-2}$); (2) bluer candidates have smaller Sérsic $n$; (3) most blue ($g-r<0.45$ mag) candidates have ${\mu }_{0,g}\lesssim 25$ mag arcsec${}^{-2}$ and will fade to populate the UDG red sequence we observe to $\sim 26.5$ mag arcsec${}^{-2}$; (4) any red UDGs that exist significantly below our ${\mu }_{0,g}$ sensitivity limit are not descended from blue UDGs in our sample; and (5) candidates with lower ${\mu }_{0,g}$ tend to smaller $n$. We anticipate that the final SMUDGes sample will contain $\sim$ 30$\times$ as many candidates.

arXiv comment26 pages, accepted for publication in ApJS

References in corpus (65)

• Adam: A Method for Stochastic Optimization
• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Astropy: A Community Python Package for Astronomy
• The NumPy array: a structure for efficient numerical computation
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• EfficientNet: Rethinking Model Scaling for Convolutional Neural Networks
• Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
• Detailed Structural Decomposition of Galaxy Images
• Overview of the DESI Legacy Imaging Surveys
• The Hyper Suprime-Cam SSP Survey: Overview and Survey Design
• Planck 2013 results. XI. All-sky model of thermal dust emission
• astroquery: An Astronomical Web-Querying Package in Python
• Lyman Alpha Imaging of a Proto-Cluster Region at <z>=3.09
• Eight Ultra-faint Galaxy Candidates Discovered in Year Two of the Dark Energy Survey
• Forty-Seven Milky Way-Sized, Extremely Diffuse Galaxies in the Coma Cluster
• The Dark Energy Survey Data Release 1
• A galaxy lacking dark matter
• The Atlas3D project -- XXIX. The new look of early-type galaxies and surrounding fields disclosed by extremely deep optical images
• NIHAO XI: Formation of Ultra-Diffuse Galaxies by outflows
• GEMS: Galaxy fitting catalogues and testing parametric galaxy fitting codes
• Ultra-diffuse galaxies: the high-spin tail of the abundant dwarf galaxy population
• A High Stellar Velocity Dispersion and ~100 Globular Clusters for the Ultra Diffuse Galaxy Dragonfly 44
• (Almost) Dark Galaxies in the ALFALFA Survey: Isolated HI Bearing Ultra Diffuse Galaxies
• Galaxies at the extremes: Ultra-diffuse galaxies in the Virgo Cluster
• Ultra diffuse galaxies outside clusters: clues to their formation and evolution
• The Southern Photometric Local Universe Survey (S-PLUS): improved SEDs, morphologies and redshifts with 12 optical filters
• The SDSS Coadd: 275 deg^2 of Deep SDSS Imaging on Stripe 82
• Unveiling a Rich System of Faint Dwarf Galaxies in the Next Generation Fornax Survey
• The Formation of Ultra Diffuse Galaxies in Cored Dark Matter Halos Through Tidal Stripping and Heating
• The Number Density of Low Surface Brightness Galaxies with 23<mu_0<25 V-mag/sqr-arcsecond
• Illuminating Low-Surface-Brightness Galaxies with the Hyper Suprime-Cam Survey
• Spatial distribution of ultra-diffuse galaxies within large-scale structures
• The IAC Stripe 82 Legacy Project: a wide-area survey for faint surface brightness astronomy
• The formation and evolution of low-surface-brightness galaxies
• Discovery of an ultra-diffuse galaxy in the Pisces-Perseus supercluster
• The Formation of Ultra-Diffuse Galaxies in Clusters
• Spectroscopic Confirmation of the Existence of Large, Diffuse Galaxies in the Coma Cluster
• The abundance of ultra-diffuse galaxies from groups to clusters: UDGs are relatively more common in more massive haloes
• Galactic cirri in deep optical imaging
• The Next Generation Virgo Cluster Survey (NGVS). XXX. Ultra-Diffuse Galaxies and their Globular Cluster Systems
• Shadows in the Dark: Low-Surface-Brightness Galaxies Discovered in the Dark Energy Survey
• Spatially-resolved stellar kinematics of the ultra diffuse galaxy Dragonfly 44. I. Observations, kinematics, and cold dark matter halo fits
• The Sloan Digital Sky Survey Stripe 82 Imaging Data: Depth-Optimized Co-adds Over 300 Deg^2 in Five Filters
• Systematically Measuring Ultra Diffuse Galaxies (SMUDGes). I. Survey Description and First Results in the Coma Galaxy Cluster and Environs
• High-resolution VLA Imaging of SDSS Stripe 82 at 1.4 GHz
• Discovery of diffuse dwarf galaxy candidates around M101
• The BigBOSS Experiment
• A Full-sky, High-resolution Atlas of Galactic 12 micron Dust Emission with WISE
• A population of faint low surface brightness galaxies in the Perseus cluster core
• The evolution of ultra-diffuse galaxies in nearby galaxy clusters from the Kapteyn IAC WEAVE INT Clusters Survey ($\text{KIWICS}$)
• Low Surface Brightness Galaxies in the Local Universe. III. Implications for the Field Galaxy Luminosity Function
• Toward Equations of Galactic Structure
• Internal dynamics and stellar content of nine ultra-diffuse galaxies in the Coma cluster prove their evolutionary link with dwarf early-type galaxies
• Spectroscopy of Ultra-diffuse Galaxies in the Coma Cluster
• Origins of ultra-diffuse galaxies in the Coma cluster - I. Constraints from velocity phase-space
• One hundred SMUDGes in S-PLUS: ultra-diffuse galaxies flourish in the field
• Deep Imaging of the HCG 95 Field.I.Ultra-diffuse Galaxies
• Systematically Measuring Ultra Diffuse Galaxies in HI: Results from the Pilot Survey
• Automated detection of very Low Surface Brightness galaxies in the Virgo Cluster
• On the Properties of Spectroscopically-Confirmed Ultra-Diffuse Galaxies Across Environment
• VICS82: the VISTA-CFHT Stripe 82 near-infrared survey
• The 3XMM/SDSS Stripe 82 Galaxy Cluster Survey: Cluster catalogue and discovery of two merging cluster candidates
• 6-meter telescope observations of three dwarf spheroidal galaxies with very low surface brightness
• Smooth, undisturbed dwarf spheroidal galaxies in the Perseus Cluster core: Implications for dark matter content

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