2.5k citations · 21k across the 97 of their papers we have counts for
17 papers · 1 filter
Estimation of line-of-sight velocities of individual galaxies using neural networks I. Modelling redshift-space distortions at large scales
Hongxiang Chen, Jie Wang, Tianxiang Mao +7
We present a scheme based on artificial neural networks (ANN) to estimate the line-of-sight velocities of individual galaxies from an observed redshift-space galaxy distribution. W…
Baryon acoustic oscillations reconstruction using convolutional neural networks
Tian-Xiang Mao, Jie Wang, Baojiu Li +4
We propose a new scheme to reconstruct the baryon acoustic oscillations (BAO) signal, which contains key cosmological information, based on deep convolutional neural networks (CNN)…
The Effect of Corner Modes in the Initial Conditions of Cosmological Simulations
B. Falck, N. McCullagh, M. C. Neyrinck +2
In view of future high-precision large-scale structure surveys, it is important to quantify the percent and subpercent level effects in cosmological -body simulations from which…
Objective Identification of Informative Wavelength Regions in Galaxy Spectra
Ching-Wa Yip, Michael Mahoney, Alex Szalay +4
Understanding the diversity in spectra is the key to determining the physical parameters of galaxies. The optical spectra of galaxies are highly convoluted with continuum and lines…
ORIGAMI: Delineating Cosmic Structures with Phase-Space Folds
Mark C. Neyrinck, Bridget L. Falck, Alex S. Szalay
Structures like galaxies and filaments of galaxies in the Universe come about from the origami-like folding of an initially flat three-dimensional manifold in 6D phase space. The O…
Distribution of Maximal Luminosity of Galaxies in the Sloan Digital Sky Survey
M. Taghizadeh-Popp, K. Ozogany, Z. Racz +2
Extreme value statistics (EVS) is applied to the distribution of galaxy luminosities in the Sloan Digital Sky Survey (SDSS). We analyze the DR8 Main Galaxy Sample (MGS), as well as…
The Hierarchical Structure and Dynamics of Voids
M. A. Aragon-Calvo, A. S. Szalay
Contrary to the common view voids have very complex internal structure and dynamics. Here we show how the hierarchy of structures in the density field inside voids is reflected by…
Galaxy Zoo: building the low-mass end of the red sequence with local post-starburst galaxies
O. Ivy Wong, K. Schawinski, S. Kaviraj +12
We present a study of local post-starburst galaxies (PSGs) using the photometric and spectroscopic observations from the Sloan Digital Sky Survey (SDSS) and the results from the Ga…
The Extreme Hosts of Extreme Supernovae
James D. Neill, Mark Sullivan, Avishay Gal-Yam +22
We use GALEX ultraviolet (UV) and optical integrated photometry of the hosts of seventeen luminous supernovae (LSNe, having peak M_V < -21) and compare them to a sample of 26,000 g…
The UV-Optical Color Dependence of Galaxy Clustering in the Local Universe
Yeong-Shang Loh, R. Michael Rich, Sébastien Heinis +22
We measure the UV-optical color dependence of galaxy clustering in the local universe. Using the clean separation of the red and blue sequences made possible by the NUV - r color-m…
Unfolding the Hierarchy of Voids
M. A. Aragon-Calvo, R. van de Weygaert, P. Araya-Melo +2
We present a framework for the hierarchical identification and characterization of voids based on the Watershed Void Finder. The Hierarchical Void Finder is based on a generalizati…
Galaxy Zoo: Passive Red Spirals
Karen L. Masters, Moein Mosleh, A. Kathy Romer +14
We study the spectroscopic properties and environments of red spiral galaxies found by the Galaxy Zoo project. By carefully selecting face-on, disk dominated spirals we construct a…
Galaxy Zoo: A correlation between coherence of galaxy spin chirality and star formation efficiency
Raul Jimenez, Anze Slosar, Licia Verde +11
We report on the finding of a correlation between galaxies' past star formation activity and the degree to which neighbouring galaxies rotation axes are aligned. This is obtained b…
Spatial Clustering from GALEX-SDSS samples: Star Formation History and large-scale clustering
Sebastien Heinis, Tamas Budavari, Alex S. Szalay +19
We measure the projected spatial correlation function w_p(r_p) from a large sample combining GALEX ultraviolet imaging with the SDSS spectroscopic sample. We study the dependence o…
GALEX-SDSS Catalogs for Statistical Studies
T. Budavari, S. Heinis, A. S. Szalay +23
We present a detailed study of the Galaxy Evolution Explorer's photometric catalogs with special focus on the statistical properties of the All-sky and Medium Imaging Surveys. We i…
Galaxy Zoo: A sample of blue early-type galaxies at low redshift
Kevin Schawinski, Chris Lintott, Daniel Thomas +13
We report the discovery of a population of nearby, blue early-type galaxies with high star formation rates (0.5 < SFR < 50 Msun/yr). They are identified by their visual morphology…
The Star Formation Law at Low Surface Density
Ted K. Wyder, D. Christopher Martin, Tom A. Barlow +16
We investigate the nature of the star formation law at low gas surface densities using a sample of 19 low surface brightness (LSB) galaxies with existing HI maps in the literature,…