AR
Alexander H. Riley
astro-ph.GAastro-ph.COastro-ph.SRastro-ph.IMastro-ph.HEhep-phgr-qcmachine learningPollen
On Valency
published · living versionsW_ff35x35x·v1 · currentpublished
The Backup Program of the Dark Energy Spectroscopic Instrument's Milky Way Survey
with Arjun Dey, Sergey E. Koposov, Joan R. Najita, Andrew P. Cooper +64
1 version
W_y8grzagh·v1published
W_mmcqn6vq·v1published
W_mh9f32ex·v1published
W_an52ar5m·v1published
Preprints & journals
71 papers in the corpus · 2016–2026A DECADE of Giants: A catalog of 42,000 optically identified galaxy clusters from 13,000 of the sky2610.24104v1 · D. Anbajagane, C. To, M. Gaido et al.2026 · 0 citationsarXiv
Hidden Disruption in Milky Way-like Satellite Galaxy Populations2610.22481v1 · Gray Thoron, Nora Shipp, Alexander H. Riley et al.2026 · 0 citationsarXiv
Spectroscopic Confirmation of the Milky Way Satellites Boötes V and Leo Minor I and the LMC Satellite DELVE 2: Three Small Ultra-Faint Dwarf Galaxies2610.07182v1 · W. Cerny, M. Geha, J. D. Simon et al.2026 · 0 citationsarXiv
Rubin Observatory Reveals a Dust-Shrouded Halo Globular Cluster in Ophiuchus2609.15872v1 · Aashay Pai, William Cerny, Andrew B. Pace et al.2026 · 0 citationsarXiv
The Carbon-Dependent Binary Frequency of CEMP-no Stars2607.13020v2 · John D. Dixon, Terese T. Hansen, Jennifer Marshall et al.2026 · 0 citationsarXiv
Deep Imaging of Grus II and Horologium II: Structure and Extent of Two Ultra-Faint Milky Way Satellites2606.25058v1 · Deepthi S. Prabhu, David J. Sand, Anirudh Chiti et al.2026 · 0 citationsarXiv
Disentangling the Distant Stellar Halo Using K-Giants in the DESI Year 3 Data2606.18849v1 · Namitha Kizhuprakkat, Andrew P. Cooper, Wenting Wang et al.2026 · 0 citationsarXiv
The Milky Way's Missing In-Situ Halo2606.16277v1 · Madeline Lucey, Robyn E. Sanderson, Alexander H. Riley et al.2026 · 0 citationsarXiv
Discovery and Spectroscopic Characterization of a Distant, Compact Milky Way Satellite in Gemini2606.09975v1 · K. Overdeck, W. Cerny, C. Y. Tan et al.2026 · 0 citationsarXiv
The DECam MAGIC Survey Mapping the Ancient Galaxy in CaHK: Overview and Summary of Early Science2605.26581v1 · A. Chiti, A. Drlica-Wagner, A. B. Pace et al.2026 · 1 citationarXiv
Constraining the Galactic bar using the M92 stellar stream2605.07918v1 · Amanda Bystrom, Sergey E. Koposov, Ting. S. Li et al.2026 · 0 citationsarXiv
Characterizing the GD-1 Stream with DESI DR2 Data: Thin Stream and Hot Cocoon2604.20958v1 · Emma Jarvis, Ting S. Li, Sergey E. Koposov et al.2026 · 0 citationsarXiv
The DECam MAGIC Survey: Investigating the Jet Stellar Stream with Photometric Metallicities2604.13374v2 · H. Q. Do, A. Chiti, P. S. Ferguson et al.2026 · 0 citationsarXiv
The DECam MAGIC Survey: Uncovering the Tidal Tails of the Crater II Dwarf Galaxy2602.21283v2 · Kaia R. Atzberger, Andrew B. Pace, Nitya Kallivayalil et al.2026 · 0 citationsarXiv
Ultra-Faint Milky Way Satellites Discovered in Carina, Phoenix, and Telescopium with DELVE Data Release 32510.11684v2 · C. Y. Tan, W. Cerny, A. B. Pace et al.2025 · 3 citationsApJ 1000, 46 (2026)
The Draco Dwarf Spheroidal Galaxy in the First Year of DESI Data2509.21822v2 · J. Ding, C. Rockosi, Ting S. Li et al.2025 · 2 citationsarXiv
DELVE Milky Way Satellite Galaxy Census I: Satellite Population and Survey Selection Function in DES, DELVE, and Pan-STARRS2509.12313v2 · C. Y. Tan, A. Drlica-Wagner, A. B. Pace et al.2025 · 5 citationsApJ 1000, 87 (2026)
Auriga Streams III: the mass-metallicity relation does not rule out tidal mass loss in Local Group satellites2509.06859v3 · Alexander H. Riley, Rebekka Bieri, Alis J. Deason et al.2025 · 4 citationsarXiv
DECADE+DES Y3 Weak Lensing Mass Map: A 13,000 deg View of Cosmic Structure from 270 Million Galaxies2509.03798v1 · M. Gatti, D. Anbajagane, C. Chang et al.2025 · 2 citationsarXiv
Not-so-heavy metal(s): Chemical Abundances in the Ultra-faint Dwarf Galaxies Eridanus IV and Centaurus I2508.11012v1 · Mair'ead E Heiger, Alexander P Ji, Ting S Li et al.2025 · 0 citationsarXiv
A second-generation star in a relic dwarf galaxy2508.04053v2 · Anirudh Chiti, Vinicius M. Placco, Andrew B. Pace et al.2025 · 4 citationsarXiv
DELVE-ing into the Milky Way's Globular Clusters: Assessing extra-tidal features in NGC 5897, NGC 7492, and testing detectability with deeper photometry2507.11629v2 · A. Chiti, K. Tavangar, P. S. Ferguson et al.2025 · 2 citationsAstronomical Journal, 170 (2025), 294
The dark matter content of Milky Way dwarf spheroidal galaxies: Draco, Sextans and Ursa Minor2507.02284v3 · Hao Yang, Wenting Wang, Ling Zhu et al.2025 · 5 citationsarXiv
Spectroscopic Analysis of Pictor II: a very low metallicity ultra-faint dwarf galaxy bound to the Large Magellanic Cloud2506.21841v2 · A. B. Pace, T. S. Li, A. P. Ji et al.2025 · 9 citationsarXiv
The DECam MAGIC Survey: Spectroscopic Follow-up of the Most Metal-Poor Stars in the Distant Milky Way Halo2506.19163v1 · Vinicius M. Placco, Guilherme Limberg, Anirudh Chiti et al.2025 · 13 citationsarXiv
The Backup Program of the Dark Energy Spectroscopic Instrument's Milky Way Survey2505.17230v1 · Arjun Dey, Sergey E. Koposov, Joan R. Najita et al.2025 · 3 citationsarXivon Valency
DESI Data Release 1: Stellar Catalogue2505.14787v4 · Sergey E. Koposov, Ting S. Li, C. Allende Prieto et al.2025 · 15 citationsOpen Journal Of Astrophysics, Vol 9 (2026)
The DESI Y1 RR Lyrae catalog II: The metallicity dependency of pulsational properties, the shape of the RR Lyrae instability strip, and metal rich RR Lyrae2505.10614v2 · Gustavo E. Medina, Ting S. Li, C. Allende Prieto et al.2025 · 1 citationarXiv
Nearby stellar substructures in the Galactic halo from DESI Milky Way Survey Year 1 Data Release2504.20327v2 · Bokyoung Kim, Sergey E. Koposov, Ting S. Li et al.2025 · 5 citationsMon. Not. R. Astron. Soc. 540 (2025) 264-288
DELVE-DEEP Survey: The Faint Satellite System of NGC 552504.18645v2 · Jonah Medoff, Burcin Mutlu-Pakdil, Jeffrey L. Carlin et al.2025 · 5 citationsApJ 990, 108 (2025)
The Cocytos Stream: A Disrupted Globular Cluster from our Last Major Merger?2504.11687v2 · Christian Aganze, Vedant Chandra, Risa H. Wechsler et al.2025 · 1 citationarXiv
The DECam MAGIC Survey: A Wide-field Photometric Metallicity Study of the Sculptor Dwarf Spheroidal Galaxy2504.03593v2 · Fabr'icia O. Barbosa, Anirudh Chiti, Guilherme Limberg et al.2025 · 5 citationsarXiv
The DESI Y1 RR Lyrae catalog I: Empirical modeling of the cyclic variation of spectroscopic properties and a chemodynamical analysis of the outer halo2504.02924v2 · Gustavo E. Medina, Ting S. Li, Sergey E. Koposov et al.2025 · 1 citationarXiv
Data Release 1 of the Dark Energy Spectroscopic Instrument2503.14745v2 · M. Abdul Karim, A. G. Adame, D. Aguado et al.2025 · 155 citationsarXivon Valency
SpecDis: Value added distance catalogue for 4 million stars from DESI Year-1 data2503.02291v3 · Songting Li, Wenting Wang, Sergey E. Koposov et al.2025 · 0 citationsarXivon Valency
The DECADE cosmic shear project III: validation of analysis pipeline using spatially inhomogeneous data2502.17676v2 · D. Anbajagane, C. Chang, N. Chicoine et al.2025 · 2 citationsarXiv
The DECADE cosmic shear project IV: cosmological constraints from 107 million galaxies across 5,400 deg of the sky2502.17677v2 · D. Anbajagane, C. Chang, A. Drlica-Wagner et al.2025 · 7 citationsarXiv
Deep Photometric Observations of Ultra-Faint Milky Way Satellites Centaurus I and Eridanus IV2501.04772v2 · Quinn O. Casey, Burcin Mutlu-Pakdil, David J. Sand et al.2025 · 2 citationsarXiv
Streams, Shells, and Substructures in the Accretion-Built Stellar Halo of NGC 3002501.04089v1 · Catherine E. Fielder, David J. Sand, Michael G. Jones et al.2025 · 6 citationsarXiv
Auriga Streams II: orbital properties of tidally disrupting satellites of Milky Way-mass galaxies2410.09143v1 · Nora Shipp, Alexander H. Riley, Christine M. Simpson et al.2024 · 13 citationsMon Not R Astron Soc (2025) 1109-1124
Auriga Streams I: disrupting satellites surrounding Milky Way-mass haloes at multiple resolutions2410.09144v2 · Alexander H. Riley, Nora Shipp, Christine M. Simpson et al.2024 · 12 citationsMon Not R Astron Soc (2025) 2443-2463
Exploring the interaction between the MW and LMC with a large sample of blue horizontal branch stars from the DESI survey2410.09149v3 · Amanda Bystrom, Sergey E. Koposov, Sophia Lilleengen et al.2024 · 24 citationsMon Not R Astron Soc (2025) 560-582on Valency
Discovery and Spectroscopic Confirmation of Aquarius III: A Low-Mass Milky Way Satellite Galaxy2410.00981v1 · W. Cerny, A. Chiti, M. Geha et al.2024 · 13 citationsarXiv
Photometric Redshifts Probability Density Estimation from Recurrent Neural Networks in the DECam Local Volume Exploration Survey Data Release 22408.15243v1 · G. Teixeira, C. R. Bom, L. Santana-Silva et al.2024 · 9 citationsarXiv
A Pride of Satellites in the Constellation Leo? Discovery of the Leo VI Milky Way Satellite Galaxy with DELVE Early Data Release 32408.00865v3 · C. Y. Tan, W. Cerny, A. Drlica-Wagner et al.2024 · 21 citationsarXiv
DESI Early Data Release Milky Way Survey Value-Added Catalogue2407.06280v2 · Sergey E. Koposov, C. Allende-Prieto, A. P. Cooper et al.2024 · 32 citationsarXivon Valency
AuriDESI: Mock Catalogues for the DESI Milky Way Survey2406.08921v1 · Namitha Kizhuprakkat, Andrew P. Cooper, Alexander H. Riley et al.2024 · 5 citationsarXiv
An overlooked source of uncertainty in the mass of the Milky Way2404.03726v2 · Kyle A. Oman (Durham ICC), Alexander H. Riley (Durham ICC)2024 · 7 citationsarXiv
Significant impact of Galactic dark matter particles on annihilation signals from Sagittarius analogues2403.15544v2 · Evan Vienneau, Addy J. Evans, Odelia V. Hartl et al.2024 · 5 citationsarXiv
ARTEMIS emulator: exploring the effect of cosmology and galaxy formation physics on Milky Way-mass haloes and their satellites2403.11692v2 · Shaun T. Brown, Azadeh Fattahi, Ian G. McCarthy et al.2024 · 8 citationsMNRAS, 532, 1223-1240 (2024)
Career total: at least 103 works. 71 are in this corpus.Showing the 50 most recent.
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