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The Galaxy Zoo Catalogs for the Galaxy And Mass Assembly (GAMA) Survey
Benne W. Holwerda, Clayton Robertson, Kyle Cook +16
Galaxy Zoo is an online project to classify morphological features in extra-galactic imaging surveys with public voting. In this paper, we compare the classifications made for two…
Merian: A Wide-Field Imaging Survey of Dwarf Galaxies at z~0.06-0.10
Shany Danieli, Erin Kado-Fong, Song Huang +32
We present the Merian Survey, an optical imaging survey optimized for studying the physical properties of bright star-forming dwarf galaxies. Merian is carried out with two medium-…
Strategies for optimal sky subtraction in the low surface brightness regime
A. E. Watkins, S. Kaviraj, C. C. Collins +5
The low surface brightness (LSB) regime ( mag arcsec) comprises a vast, mostly unexplored discovery space, from dwarf galaxies to the diffuse interstellar…
An almost dark galaxy with the mass of the Small Magellanic Cloud
Mireia Montes, Ignacio Trujillo, Ananthan Karunakaran +9
Almost Dark Galaxies are objects that have eluded detection by traditional surveys such as the Sloan Digital Sky Survey (SDSS). The low surface brightness of these galaxies ((…
The Merian Survey: Design, Construction, and Characterization of a Filter Set Optimized to Find Dwarf Galaxies and Measure their Dark Matter Halo Properties with Weak Lensing
Yifei Luo, Alexie Leauthaud, Jenny Greene +28
The Merian survey is mapping 850 degrees of the Hyper Suprime-Cam Strategic Survey Program (HSC-SSP) wide layer with two medium-band filters on the 4-meter Victor M. Bla…
The Loneliest Galaxies in the Universe: A GAMA and GalaxyZoo Study on Void Galaxy Morphology
Lori E. Porter, Benne W. Holwerda, Sandor Kruk +5
The large-scale structure (LSS) of the Universe is comprised of galaxy filaments, tendrils, and voids. The majority of the Universe's volume is taken up by these voids, which exist…
Galaxy And Mass Assembly: Galaxy Morphology in the Green Valley, Prominent rings and looser Spiral Arms
Dominic Smith, Lutz Haberzettl, L. E. Porter +15
Galaxies broadly fall into two categories: star-forming (blue) galaxies and quiescent (red) galaxies. In between, one finds the less populated ``green valley". Some of these galaxi…
Galaxy And Mass Assembly (GAMA): Bulge-disk decomposition of KiDS data in the nearby universe
Sarah Casura, Jochen Liske, Aaron S. G. Robotham +10
We derive single Sérsic fits and bulge-disk decompositions for 13096 galaxies at redshifts z < 0.08 in the GAMA II equatorial survey regions in the Kilo-Degree Survey (KiDS) g, r a…
Galapagos-2/Galfitm/GAMA -- multi-wavelength measurement of galaxy structure: separating the properties of spheroid and disk components in modern surveys
Boris Häußler, Marina Vika, Steven P. Bamford +6
We present the capabilities of Galapagos--2 and Galfitm in the context of fitting 2-component profiles to galaxies, on the way to providing complete multi-band, multi-component fit…
Galaxy And Mass Assembly (GAMA): Self-Organizing Map Application on Nearby Galaxies
B. W. Holwerda, Dominic Smith, Lori Porter +12
Galaxy populations show bimodality in a variety of properties: stellar mass, colour, specific star-formation rate, size, and Sérsic index. These parameters are our feature space. W…
Galaxy And Mass Assembly (GAMA): Data Release 4 and the z < 0.1 total and z < 0.08 morphological galaxy stellar mass functions
Simon P. Driver, Sabine Bellstedt, Aaron S. G. Robotham +67
In Galaxy And Mass Assembly Data Release 4 (GAMA DR4), we make available our full spectroscopic redshift sample. This includes 248682 galaxy spectra, and, in combination with earli…
North Ecliptic Pole merging galaxy catalogue
W. J. Pearson, L. E. Suelves, S. C. -C. Ho +17
We aim to generate a catalogue of merging galaxies within the 5.4 sq. deg. North Ecliptic Pole over the redshift range . To do this, imaging data from the Hyper Supr…
Galaxy Zoo DECaLS: Detailed Visual Morphology Measurements from Volunteers and Deep Learning for 314,000 Galaxies
Mike Walmsley, Chris Lintott, Tobias Geron +15
We present Galaxy Zoo DECaLS: detailed visual morphological classifications for Dark Energy Camera Legacy Survey images of galaxies within the SDSS DR8 footprint. Deeper DECaLS ima…
The Growth of Intracluster Light in XCS-HSC Galaxy Clusters from
Kate E. Furnell, Chris A. Collins, Lee S. Kelvin +14
We estimate the Intracluster Light (ICL) component within a sample of 18 clusters detected in XMM Cluster Survey (XCS) data using deep ( 26.8 mag) Hyper Suprime Cam Subaru St…
Galaxy And Mass Assembly: A Comparison between Galaxy-Galaxy Lens Searches in KiDS/GAMA
Shawn Knabel, Rebecca L. Steele, Benne W. Holwerda +9
Strong gravitational lenses are a rare and instructive type of astronomical object. Identification has long relied on serendipity, but different strategies -- such as mixed spectro…
GAMA+KiDS: Empirical correlations between halo mass and other galaxy properties near the knee of the stellar-to-halo mass relation
Edward N. Taylor, Michelle E. Cluver, Alan Duffy +16
We use KiDS weak lensing data to measure variations in mean halo mass as a function of several key galaxy properties (namely: stellar colour, specific star formation rate, Sersic i…
The frequency of dust lanes in edge-on spiral galaxies identified by Galaxy Zoo in KiDS imaging of GAMA targets
B. W. Holwerda, L. Kelvin, I. Baldry +20
Dust lanes bisect the plane of a typical edge-on spiral galaxy as a dark optical absorption feature. Their appearance is linked to the gravitational stability of spiral disks; the…
The galaxy stellar mass function from CCSNe with improved photo-z techniques
Thomas M. Sedgwick, Ivan K. Baldry, Philip A. James +1
In Sedgwick et al. (2019) we introduced and utilised a method to combat surface brightness and mass biases in galaxy sample selection, using core-collapse supernovae (CCSNe) as poi…
Stellar mass -- halo mass relation for the brightest central galaxies of X-ray clusters since z~0.65
G. Erfanianfar, A. Finoguenov, K. Furnell +25
We present the brightest cluster galaxies (BCGs) catalog for SPectroscoic IDentification of eROSITA Sources (SPIDERS) DR14 cluster program value-added catalog. We list the 416 BCGs…
The Galaxy Stellar Mass Function and Low Surface Brightness Galaxies from Core-Collapse Supernovae
Thomas M. Sedgwick, Ivan K. Baldry, Philip A. James +1
We introduce a method for producing a galaxy sample unbiased by surface brightness and stellar mass, by selecting star-forming galaxies via the positions of core-collapse supernova…
Testing Convolutional Neural Networks for finding strong gravitational lenses in KiDS
C. E. Petrillo, C. Tortora, S. Chatterjee +7
Convolutional Neural Networks (ConvNets) are one of the most promising methods for identifying strong gravitational lens candidates in survey data. We present two ConvNet lens-find…
Galaxy and Mass Assembly (GAMA): Variation in Galaxy Structure Across the Green Valley
Lee S. Kelvin, Malcolm N. Bremer, Steven Phillipps +26
Using a sample of 472 local Universe (z<0.06) galaxies in the stellar mass range 10.25 < log M*/M_sun < 10.75, we explore the variation in galaxy structure as a function of morphol…
Exploring Relations Between BCG \& Cluster Properties in the SPectroscopic IDentification of eROSITA Sources Survey from
Kate E. Furnell, Chris A. Collins, Lee S. Kelvin +6
We present a sample of 329 low to intermediate redshift () brightest cluster galaxies (BCGs) in X-ray selected clusters from the SPectroscopic IDentification of eRo…
Galaxy and Mass Assembly (GAMA): Morphological transformation of galaxies across the green valley
M. N. Bremer, S. Phillipps, L. S. Kelvin +13
We explore constraints on the joint photometric and morphological evolution of typical low redshift galaxies as they move from the blue cloud through the green valley and onto the…