Search Results - "Wechsler, Risa H."

UniverseMachine: The correlation between galaxy growth and dark matter halo assembly from z = 0−10 by Behroozi, Peter, Wechsler, Risa H, Hearin, Andrew P, Conroy, Charlie

“…ABSTRACT We present a method to flexibly and self-consistently determine individual galaxies’ star formation rates (SFRs) from their host haloes’ potential…”
Get full text

Beyond assembly bias: exploring secondary halo biases for cluster-size haloes by Mao, Yao-Yuan, Zentner, Andrew R, Wechsler, Risa H

“…Abstract Secondary halo bias, commonly known as ‘assembly bias’, is the dependence of halo clustering on a halo property other than mass. This prediction of…”
Get full text

Weak lensing measurement of the mass–richness relation of SDSS redMaPPer clusters by Simet, Melanie, McClintock, Tom, Mandelbaum, Rachel, Rozo, Eduardo, Rykoff, Eli, Sheldon, Erin, Wechsler, Risa H.

“…Abstract We perform a measurement of the mass–richness relation of the redMaPPer galaxy cluster catalogue using weak lensing data from the Sloan Digital Sky…”
Get full text

THE DEPENDENCE OF SUBHALO ABUNDANCE ON HALO CONCENTRATION by Mao, Yao-Yuan, Williamson, Marc, Wechsler, Risa H.

“…ABSTRACT Hierarchical structure formation implies that the number of subhalos within a dark matter halo depends not only on halo mass, but also on the…”
Get full text

Stringent σ8 constraints from small-scale galaxy clustering using a hybrid MCMC + emulator framework by Yuan, Sihan, Garrison, Lehman H, Eisenstein, Daniel J, Wechsler, Risa H

“…ABSTRACT We present a novel simulation-based hybrid emulator approach that maximally derives cosmological and Halo Occupation Distribution (HOD) information…”
Get full text

The Aemulus Project. I. Numerical Simulations for Precision Cosmology by DeRose, Joseph, Wechsler, Risa H., Tinker, Jeremy L., Becker, Matthew R., Mao, Yao-Yuan, McClintock, Thomas, McLaughlin, Sean, Rozo, Eduardo, Zhai, Zhongxu

“…The rapidly growing statistical precision of galaxy surveys has led to a need for ever more precise predictions of the observables used to constrain…”
Get full text

The Aemulus Project. II. Emulating the Halo Mass Function by McClintock, Thomas, Rozo, Eduardo, Becker, Matthew R., DeRose, Joseph, Mao, Yao-Yuan, McLaughlin, Sean, Tinker, Jeremy L., Wechsler, Risa H., Zhai, Zhongxu

“…Existing models for the dependence of the halo mass function on cosmological parameters will become a limiting source of systematic uncertainty for cluster…”
Get full text

The Aemulus Project. III. Emulation of the Galaxy Correlation Function by Zhai, Zhongxu, Tinker, Jeremy L., Becker, Matthew R., DeRose, Joseph, Mao, Yao-Yuan, McClintock, Thomas, McLaughlin, Sean, Rozo, Eduardo, Wechsler, Risa H.

“…Using the N-body simulations of the Aemulus Project, we construct an emulator for the nonlinear clustering of galaxies in real and redshift space. We construct…”
Get full text

The SAGA Survey. I. Satellite Galaxy Populations around Eight Milky Way Analogs by Geha, Marla, Wechsler, Risa H., Mao, Yao-Yuan, Tollerud, Erik J., Weiner, Benjamin, Bernstein, Rebecca, Hoyle, Ben, Marchi, Sebastian, Marshall, Phil J., Muñoz, Ricardo, Lu, Yu

“…We present the survey strategy and early results of the "Satellites Around Galactic Analogs" (SAGA) Survey. The SAGA Survey's goal is to measure the…”
Get full text

The Universe at z > 10: predictions for JWST from the universemachine DR1 by Behroozi, Peter, Conroy, Charlie, Wechsler, Risa H, Hearin, Andrew, Williams, Christina C, Moster, Benjamin P, Yung, L Y Aaron, Somerville, Rachel S, Gottlöber, Stefan, Yepes, Gustavo, Endsley, Ryan

“…ABSTRACT The James Webb Space Telescope (JWST) is expected to observe galaxies at z > 10 that are presently inaccessible. Here, we use a self-consistent…”
Get full text

CONNECTING CO INTENSITY MAPPING TO MOLECULAR GAS AND STAR FORMATION IN THE EPOCH OF GALAXY ASSEMBLY by Li, Tony Y., Wechsler, Risa H., Devaraj, Kiruthika, Church, Sarah E.

“…ABSTRACT Intensity mapping, which images a single spectral line from unresolved galaxies across cosmological volumes, is a promising technique for probing the…”
Get full text

Dark Matter Constraints from a Unified Analysis of Strong Gravitational Lenses and Milky Way Satellite Galaxies by Nadler, Ethan O., Birrer, Simon, Gilman, Daniel, Wechsler, Risa H., Du, Xiaolong, Benson, Andrew, Nierenberg, Anna M., Treu, Tommaso

“…Abstract Joint analyses of small-scale cosmological structure probes are relatively unexplored and promise to advance measurements of microphysical dark matter…”
Get full text

Signatures of Velocity-dependent Dark Matter Self-interactions in Milky Way-mass Halos by Nadler, Ethan O., Banerjee, Arka, Adhikari, Susmita, Mao, Yao-Yuan, Wechsler, Risa H.

“…We explore the impact of elastic, anisotropic, velocity-dependent dark matter (DM) self-interactions on the host halo and subhalos of Milky Way (MW)-mass…”
Get full text

The impact of the fiducial cosmology assumption on BAO distance scale measurements by Carter, Paul, Beutler, Florian, Percival, Will J, DeRose, Joseph, Wechsler, Risa H, Zhao, Cheng

“…ABSTRACT Standard analysis pipelines for measurements of Baryon Acoustic Oscillations (BAO) in galaxy surveys make use of a fiducial cosmological model to…”
Get full text

Galaxy cluster mass estimation from stacked spectroscopic analysis by Farahi, Arya, Evrard, August E., Rozo, Eduardo, Rykoff, Eli S., Wechsler, Risa H.

“…We use simulated galaxy surveys to study: (i) how galaxy membership in redMaPPer clusters maps to the underlying halo population, and (ii) the accuracy of a…”
Get full text

Forecasting [C ii] Line-intensity Mapping Measurements between the End of Reionization and the Epoch of Galaxy Assembly by Chung, Dongwoo T., Viero, Marco P., Church, Sarah E., Wechsler, Risa H.

“…We combine recent simulation work on the SFR-[C ii] correlation at high redshift with empirical modeling of the galaxy-halo connection (via UniverseMachine) to…”
Get full text

THE EATING HABITS OF MILKY WAY-MASS HALOS: DESTROYED DWARF SATELLITES AND THE METALLICITY DISTRIBUTION OF ACCRETED STARS by Deason, Alis J., Mao, Yao-Yuan, Wechsler, Risa H.

“…ABSTRACT We study the mass spectrum of destroyed dwarfs that contribute to the accreted stellar mass of Milky Way (MW)-mass (Mvir ∼ 1012.1 M ) halos using a…”
Get full text

UNIT project: Universe N-body simulations for the Investigation of Theoretical models from galaxy surveys by Chuang, Chia-Hsun, Yepes, Gustavo, Kitaura, Francisco-Shu, Pellejero-Ibanez, Marcos, Rodríguez-Torres, Sergio, Feng, Yu, Metcalf, Robert Benton, Wechsler, Risa H, Zhao, Cheng, To, Chun-Hao, Alam, Shadab, Banerjee, Arka, DeRose, Joseph, Giocoli, Carlo, Knebe, Alexander, Reyes, Guillermo

“…Abstract We present the UNIT N-body cosmological simulations project, designed to provide precise predictions for non-linear statistics of the galaxy…”
Get full text

The Binary-Host Connection: Astrophysics of Gravitational-Wave Binaries from Host Galaxy Properties by Adhikari, Susmita, Fishbach, Maya, Holz, Daniel E., Wechsler, Risa H., Fang, Zhanpei

“…Gravitational waves from the merger of binary neutron stars (BNSs) are accompanied by electromagnetic counterparts, making it possible to identify the…”
Get full text

From Images to Dark Matter: End-to-end Inference of Substructure from Hundreds of Strong Gravitational Lenses by Wagner-Carena, Sebastian, Aalbers, Jelle, Birrer, Simon, Nadler, Ethan O., Darragh-Ford, Elise, Marshall, Philip J., Wechsler, Risa H.

“…Abstract Constraining the distribution of small-scale structure in our universe allows us to probe alternatives to the cold dark matter paradigm. Strong…”
Get full text