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Latent Stochastic Differential Equations for Modeling Quasar Variability and Inferring Black Hole Properties
Joshua Fagin, Ji Won Park, Henry Best +6
Quasars are bright and unobscured active galactic nuclei (AGN) thought to be powered by the accretion of matter around supermassive black holes at the centers of galaxies. The temp…
: Learning Galaxy Properties from Merger Trees
Christian Kragh Jespersen, Miles Cranmer, Peter Melchior +3
Efficiently mapping baryonic properties onto dark matter is a major challenge in astrophysics. Although semi-analytic models (SAMs) and hydrodynamical simulations have made impress…
Charting Galactic Accelerations with Stellar Streams and Machine Learning
Jacob Nibauer, Vasily Belokurov, Miles Cranmer +2
We present a data-driven method for reconstructing the galactic acceleration field from phase-space measurements of stellar streams. Our approach is based on a flexible and differe…
Astro2020 Science White Paper: Science at the edges: internal kinematics of globular clusters' external fields
A. Bellini, M. Libralato, J. Anderson +17
The outer regions of globular clusters can enable us to answer many fundamental questions concerning issues ranging from the formation and evolution of clusters and their multiple…
Alignment between filaments and galaxy spins from the MaNGA integral-field survey
Alex Krolewski, Shirley Ho, Yen-Chi Chen +4
Halos and galaxies acquire their angular momentum during the collapse of surrounding large-scale structure. This process imprints alignments between galaxy spins and nearby filamen…
Gravitational redshift profiles of MaNGA BCGs
Hongyu Zhu, Shadab Alam, Rupert A. C. Croft +4
The gravitational potential well of an galaxy will lead to a gravitational redshift differential of order 1 km/s between the galaxy core and its outskirts. Cu…
Statistical properties of damped Lyman-alpha systems from Sloan Digital Sky Survey DR12
Simeon Bird, Roman Garnett, Shirley Ho
We present new estimates for the statistical properties of damped Lyman- absorbers (DLAs). We compute the column density distribution function at , the line density, $\math…
Photometric Selection of a Massive Galaxy Catalog with
Carolina Núñez, David N. Spergel, Shirley Ho
We present the development of a photometrically selected massive galaxy catalog, targeting Luminous Red Galaxies (LRGs) and massive blue galaxies at redshifts . Massive…
MApping the Most Massive Overdensities Through Hydrogen (MAMMOTH) I: Methodology
Zheng Cai, Xiaohui Fan, Sebastien Peirani +8
Modern cosmology predicts that a galaxy overdensity is associated to a large reservoir of the intergalactic gas, which can be traced by the Ly forest absorption. We have underta…
Detecting Effects of Filaments on Galaxy Properties in the Sloan Digital Sky Survey III
Yen-Chi Chen, Shirley Ho, Rachel Mandelbaum +6
We study the effects of filaments on galaxy properties in the Sloan Digital Sky Survey (SDSS) Data Release 12 using filaments from the `Cosmic Web Reconstruction' catalogue (Chen e…
Luminosity function of [OII] emission-line galaxies in the MassiveBlack-II simulation
KwangHo Park, Tiziana Di Matteo, Shirley Ho +4
We examine the luminosity function (LF) of [OII] emission-line galaxies in the high-resolution cosmological simulation MassiveBlack-II (MBII). From the spectral energy distribution…
The Evolution of Post-Starburst Galaxies from to the Present
Petchara Pattarakijwanich, Michael A. Strauss, Shirley Ho +1
Post-starburst galaxies are in the transitional stage between blue, star-forming galaxies and red, quiescent galaxies, and therefore hold important clues for our understanding of g…