MW
Matthew G. Walker
astro-ph.GAastro-ph.COastro-ph.SRastro-phastro-ph.HEhep-phastro-ph.IMphysics.space-phstat.AP
On Valency
published · living versionsW_spydx862·v1 · currentpublished
The Close Binary Fraction as a Function of Stellar Parameters in APOGEE: A Strong Anti-Correlation With Abundances
with Christine N. Mazzola, Carles Badenes, Maxwell Moe, Sergey E. Koposov +18
1 version
W_ncqxpccn·v1published
Preprints & journals
95 papers in the corpus · 2005–2026Dynamical friction vs. subhalo heating in Cold Dark Matter haloes2609.36796v1 · Jorge Penarrubia, Pierfrancesco Di Cintio, Eduardo Vitral et al.2026 · 0 citationsarXiv
Signatures of dark subhaloes in dwarf spheroidal galaxies: II. Transient and localised kinematic features2609.18552v1 · Eduardo Vitral, Jorge Penarrubia, Roeland P. van der Marel et al.2026 · 0 citationsarXiv
Structural Diversity Among the Milky Way's Dwarf Spheroidal Satellites2607.09308v1 · Matthew G. Walker, Raphael Errani, Andrew B. Pace et al.2026 · 0 citationsarXiv
Collisional Dynamics of Stars and Dark Matter in Ultra-Faint Galaxies2604.06304v2 · Raphael Errani, Nicolas Esser, Jorge Penarrubia et al.2026 · 0 citationsApJ 1007 42 (2026)
Tailored mass estimators for Milky Way dwarf Spheroidals2602.11273v1 · Sofia L. Splawska, Raphael Errani, Jorge Penarrubia et al.2026 · 0 citationsarXiv
Stellar Cores Live Long and Prosper in Cuspy Dark Matter Halos2512.05719v2 · Jenni Hakkinen, Alexander Rawlings, Till Sawala et al.2025 · 0 citationsApJL 999 (2026) L38
Signatures of dark subhalos in dwarf spheroidal galaxies: I. Fluctuations in surface density2509.26056v2 · Eduardo Vitral, Jorge Penarrubia, Matthew G. Walker2025 · 1 citationarXiv
Gravothermal expansion of dwarf spheroidal galaxies heated by dark subhaloes2506.03904v2 · Jorge Penarrubia, Raphael Errani, Eduardo Vitral et al.2025 · 2 citationsarXiv
Stellar Mass Segregation in Dark Matter Halos2505.22717v2 · Raphael Errani, Jorge Penarrubia, Matthew G. Walker2025 · 4 citationsApJ 993 160 (2025)
Impulsive mixing of stellar populations in dwarf spheroidal galaxies2502.19475v2 · Raphael Errani, Matthew G. Walker, Simon Rozier et al.2025 · 6 citationsApJ 992 162 (2025)
HSTPROMO Internal Proper Motion Kinematics of Dwarf Spheroidal Galaxies: I. Velocity Anisotropy and Dark Matter Cusp Slope of Draco2407.07769v1 · Eduardo Vitral, Roeland P. van der Marel, Sangmo Tony Sohn et al.2024 · 18 citationsThe Astrophysical Journal, 970:1 (26pp), 2024 July 20
Rotation and H emission in a young SMC cluster: a spectroscopic view of NGC 3302406.10413v1 · Paul I. Cristofari, Andrea K. Dupree, Antonino P. Milone et al.2024 · 3 citationsarXiv
Abundances of Neutron-capture Elements in 62 Stars in the Globular Cluster Messier 15.38799617 · Cabrera Garcia, Jonathan, Sakari, Charli M, Roederer, Ian U et al.2026 · 10 citationsThe Astrophysical journal. 2024;967(2):101
Capture of field stars by dark substructures2404.19069v2 · Jorge Penarrubia, Raphael Errani, Matthew G. Walker et al.2024 · 7 citationsarXiv
Offset of M54 from the Sagittarius Dwarf Spheroidal Galaxy2404.16184v2 · Zhaozhou An, Matthew G. Walker, Andrew B. Pace2024 · 3 citationsarXiv
Magellan/M2FS and MMT/Hectochelle Spectroscopy of Dwarf Galaxies and Faint Star Clusters within the Galactic Halo2312.12738v1 · Matthew G. Walker, Nelson Caldwell, Mario Mateo et al.2023 · 19 citationsThe Astrophysical Journal Supplement Series, 2023, Volume 268, Issue 1, id.19, 40 pp
Micro galaxies in LCDM2311.14798v2 · Raphael Errani, Rodrigo Ibata, Julio F. Navarro et al.2023 · 16 citationsApJ 968 89 (2024)
Abundance Analysis of Stars at Large Radius in the Sextans Dwarf Spheroidal Galaxy2307.02585v1 · Ian U. Roederer, Andrew B. Pace, Vinicius M. Placco et al.2023 · 8 citationsarXiv
The Kinematics, Metallicities, and Orbits of Six Recently Discovered Galactic Star Clusters with Magellan/M2FS Spectroscopy2304.06904v2 · Andrew B. Pace (CMU), Sergey E. Koposov, Matthew G. Walker et al.2023 · 12 citationsarXiv
The viability of ultralight bosonic dark matter in dwarf galaxies2206.05244v3 · Isabelle S. Goldstein (Brown U.), Savvas M. Koushiappas (Brown U.), Matthew G. Walker (CMU)2022 · 10 citationsPhys. Rev. D 106, 063010 (2022)
Multiplicity Statistics of Stars in the Sagittarius Dwarf Spheroidal Galaxy: Comparison to the Milky Way2204.09750v1 · Victoria Bonidie, Travis Court, Christine Mazzola Daher et al.2022 · 3 citationsarXiv
Stellar multiplicity and stellar rotation: Insights from APOGEE2110.01100v2 · Christine Mazzola Daher, Carles Badenes, Jamie Tayar et al.2021 · 0 citationsarXiv
Stellar kinematics of dwarf galaxies from multi-epoch spectroscopy: application to Triangulum II2108.10867v2 · Rachel Buttry, Andrew B. Pace, Sergey E. Koposov et al.2021 · 15 citationsarXiv
Two-Point Separation Functions for Modeling Wide Binary Systems in Nearby Dwarf Galaxies2107.07554v1 · Christopher Kervick, Matthew G. Walker, Jorge Penarrubia et al.2021 · 7 citationsarXiv
Spectroscopic Confirmation of the Sixth Globular Cluster in the Fornax Dwarf Spheroidal Galaxy2105.00064v2 · Andrew B. Pace (CMU), Matthew G. Walker, Sergey E. Koposov et al.2021 · 26 citationsarXiv
Dynamical masses and mass-to-light ratios of resolved massive star clusters -- II. Results for 26 star clusters in the Magellanic Clouds2104.06882v1 · Ying-Yi Song, Mario Mateo, John I. Bailey III et al.2021 · 36 citationsarXiv
Breaking Beta: A comparison of mass modelling methods for spherical systems2011.09493v2 · J. I. Read, G. A. Mamon, E. Vasiliev et al.2020 · 50 citationsarXiv
The Close Binary Fraction as a Function of Stellar Parameters in APOGEE: A Strong Anti-Correlation With Abundances2007.09059v2 · Christine N. Mazzola, Carles Badenes, Maxwell Moe et al.2020 · 57 citationsarXivon Valency
The Most Metal-poor Stars in Omega Centauri (NGC 5139)2004.09023v1 · Christian I. Johnson, Andrea K. Dupree, Mario Mateo et al.2020 · 29 citationsarXiv
Structure Formation Models Weaken Limits on WIMP Dark Matter from Dwarf Spheroidal Galaxies2002.11956v2 · Shin'ichiro Ando, Alex Geringer-Sameth, Nagisa Hiroshima et al.2020 · 53 citationsPhys. Rev. D 102, 061302 (2020)
Dynamical Masses and Mass-to-light Ratios of Resolved Massive Star Clusters. I. NGC 419 and NGC 18461909.02056v1 · Ying-Yi Song, Mario Mateo, A. D. Mackey et al.2019 · 9 citationsarXiv
Signatures of Tidal Disruption in Ultra-Faint Dwarf Galaxies: A Combined HST, Gaia, and MMT/Hectochelle Study of Leo V1907.07233v1 · Burcin Mutlu-Pakdil, David J. Sand, Matthew G. Walker et al.2019 · 22 citationsarXiv
Astrophysical Tests of Dark Matter with Maunakea Spectroscopic Explorer1903.03155v2 · Ting S. Li, Manoj Kaplinghat, Keith Bechtol et al.2019 · 6 citationsarXiv
The Binary Fraction of Stars in Dwarf Galaxies: the Cases of Draco and Ursa Minor1811.06597v1 · Meghin Spencer, Mario Mateo, Edward Olszewski et al.2018 · 65 citationsAJ, Vol. 156, Number 6, 257 (2018)
The hidden giant: discovery of an enormous Galactic dwarf satellite in Gaia DR21811.04082v3 · G. Torrealba, V. Belokurov, S. E. Koposov et al.2018 · 200 citationsarXivon Valency
Galaxy Cluster Mass Estimates in the Presence of Substructure1810.10474v1 · Evan Tucker, Matthew G. Walker, Mario Mateo et al.2018 · 6 citationsarXiv
Dark matter heats up in dwarf galaxies1808.06634v2 · J. I. Read, M. G. Walker, P. Steger2018 · 235 citationsarXiv
Astrophysical explanations of suspected dark matter signals in dwarf galaxies1807.08740v1 · Alex Geringer-Sameth, Savvas M. Koushiappas, Matthew G. Walker et al.2018 · 2 citationsarXiv
The case for a cold dark matter cusp in Draco1805.06934v2 · J. I. Read, M. G. Walker, P. Steger2018 · 131 citationsarXiv
Systematics in virial mass estimators for pressure-supported systems1805.00484v2 · Raphael Errani, Jorge Penarrubia, Matthew G. Walker2018 · 115 citationsarXiv
Snake in the Clouds: A new nearby dwarf galaxy in the Magellanic bridge1804.06430v1 · Sergey E. Koposov, Matthew G. Walker, Vasily Belokurov et al.2018 · 115 citationsarXiv
Detection of a population of carbon-enhanced metal-poor stars in the Sculptor dwarf spheroidal galaxy1803.04538v2 · Anirudh Chiti, Joshua D. Simon, Anna Frebel et al.2018 · 47 citationsarXiv
Exploring the Chemical Composition and Double Horizontal Branch of the Bulge Globular Cluster NGC 65691801.10475v1 · Christian I. Johnson, R. Michael Rich, Nelson Caldwell et al.2018 · 28 citationsJohnson, C. I., Rich, R. M., Caldwell, N., et al., 2018, AJ, 155, 71
A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5<z<6.8: Program Overview and a Sample of the Brightest Lyman-alpha Emitters1708.05249v1 · Linhua Jiang, Yue Shen, Fuyan Bian et al.2017 · 29 citationsarXiv
Magellan/M2FS Spectroscopy of Galaxy Clusters: Stellar Population Model and Application to Abell 2671708.00037v2 · Evan Tucker, Matthew G. Walker, Mario Mateo et al.2017 · 3 citationsarXiv
Crater 2: An Extremely Cold Dark Matter Halo1612.06398v1 · Nelson Caldwell (CfA), Matthew G. Walker (CMU), Mario Mateo (UM) et al.2016 · 127 citationsarXiv
A Chemical Composition Survey of the Iron-Complex Globular Cluster NGC 6273 (M 19)1611.05830v1 · Christian I. Johnson, Nelson Caldwell, R. Michael Rich et al.2016 · 46 citationsarXiv
The Detailed Science Case for the Maunakea Spectroscopic Explorer: the Composition and Dynamics of the Faint Universe1606.00043v1 · Alan McConnachie, Carine Babusiaux, Michael Balogh et al.2016 · 32 citationsarXiv
A concise overview of the Maunakea Spectroscopic Explorer1606.00060v1 · Alan W. McConnachie, Carine Babusiaux, Michael Balogh et al.2016 · 8 citationsarXiv
Wide binaries in ultra-faint galaxies: a window onto dark matter on the smallest scales1605.09384v1 · Jorge Penarrubia, Aaron D. Ludlow, Julio Chanam'e et al.2016 · 39 citationsarXiv
Career total: at least 171 works. 95 are in this corpus.Showing the 50 most recent.
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