activity
20232026
most citedDESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints

539 citations · 1.2k across the 95 of their papers we have counts for

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20 papers · 1 filter

astro-ph.GA2026

Characterizing the GD-1 Stream with DESI DR2 Data: Thin Stream and Hot Cocoon

Emma Jarvis, Ting S. Li, Sergey E. Koposov +54

GD-1 is among the longest, coldest stellar streams in the Milky Way, making it an ideal target for probing dark matter substructure through dynamical heating. We present a catalog…

astro-ph.GA2026

The Kinematically Hot, Extremely Metal-Poor C-19 Stellar Stream in DESI DR2

Nasser Mohammed, Joseph Y. Tang, Ting S. Li +47

Stellar streams are the result of a host galaxy's gravitational potential tidally disrupting satellite dwarf galaxies and globular clusters (GCs), causing them to grow leading and…

astro-ph.GA2026

ODIN: Spectroscopic Validation of Ly-Emitting Galaxy Samples with DESI

Ethan Pinarski, Govind Ramgopal, Nicole Firestone +65

The One-hundred-deg^2 DECam Imaging in Narrowbands (ODIN) survey is conducting the widest-field deep narrow-band imaging of the equatorial and southern skies. ODIN uses three custo…

astro-ph.GA2025

Tracing the Cosmic Evolution of the Cool Circumgalactic Medium of Luminous Red Galaxies with DESI Year 1 Data

Yu-Ling Chang, Ting-Wen Lan, J. Xavier Prochaska +44

We investigate the properties of the cool circumgalactic medium (CGM) of massive galaxies and their cosmic evolution. By using the year 1 dataset of luminous red galaxies (LRGs) an…

astro-ph.GA2025

The DESI Single Fiber Lens Search. I. Four Thousand Spectroscopically Selected Galaxy-Galaxy Gravitational Lens Candidates

Juliana S. M. Karp, David J. Schlegel, Xiaosheng Huang +47

We present 4,110 strong gravitational lens candidates, 3,887 of which are new discoveries, selected from a sample of 5,837,154 luminous red galaxies (LRGs) observed with the Dark E…

astro-ph.GA2025

The Multi-Phase Circumgalactic Medium of DESI Emission-Line Galaxies at z~1.5

Ting-Wen Lan, J. Xavier Prochaska, J. Aguilar +39

We study the multi-phase circumgalactic medium (CGM) of emission line galaxies (ELGs) at , traced by MgII, and CIV, …

astro-ph.GA2025

Direct Measurement of Galaxy Assembly Bias using DESI DR1 Data

Zhiwei Shao, Ying Zu, Andrés N. Salcedo +54

We report the first direct measurement of galaxy assembly bias, a critical systematic in cosmology, from the Dark Energy Spectroscopic Instrument (DESI) Bright Galaxy Survey. We in…

astro-ph.GA2025

The Draco Dwarf Spheroidal Galaxy in the First Year of DESI Data

J. Ding, C. Rockosi, Ting S. Li +40

We investigate the spatial distribution, kinematics, and metallicity of stars in the Draco dwarf spheroidal galaxy using data from the Dark Energy Spectroscopic Instrument (DESI).…

astro-ph.GA2025

A New Way to Discover Strong Gravitational Lenses: Pair-wise Spectroscopic Search from DESI DR1

Yuan-Ming Hsu, Xiaosheng Huang, Christopher J. Storfer +47

We present a new method to search for strong gravitational lensing systems by pairing spectra that are close together on the sky in a spectroscopic survey. We visually inspect 26,6…

astro-ph.GA2025★ 1 cited

The mass of the Milky Way from outer halo stars measured by DESI DR1

Gustavo E. Medina, Ting S. Li, Gwendolyn M. Eadie +50

As a benchmark for galaxy evolution and dark matter studies, the total mass of the Milky Way is a parameter of cosmological significance, and its value at large radii from the Gala…

astro-ph.GA2025★ 1 cited

DESI EDR: Calibrating the Tully-Fisher Relationship with the DESI Peculiar Velocity Survey

K. Douglass, S. BenZvi, N. Uberoi +45

We calibrate the Tully-Fisher relation (TFR) with data from the DESI Peculiar Velocity (PV) Survey taken during the Survey Validation (SV) period of the DESI galaxy redshift survey…

astro-ph.GA2025

DESI DR2 reference mocks: clustering results from Uchuu-BGS and LRG

E. Fernández-García, F. Prada, A. Smith +64

The aim of this work is to construct mock galaxy catalogues that accurately reproduce the redshift evolution of galaxy number density, clustering statistics, and baryonic propertie…

astro-ph.GA2025★ 6 cited

Beyond Traditional Diagnostics: Identifying Active Galactic Nuclei with Spectral Energy Distribution Fitting in DESI Data

M. Siudek, M. Mezcua, C. Circosta +36

Active galactic nuclei (AGN) are typically identified through their distinctive X-ray or radio emissions, mid-infrared (MIR) colors, or emission lines. However, each method capture…

astro-ph.GA2025

ODIN: The LAE Lyα Luminosity Function over Cosmic Time and Environmental Density

Gautam Nagaraj, Robin Ciardullo, Caryl Gronwall +53

The ubiquity and relative ease of discovery make Ly emitting galaxies (LAEs) ideal tracers for cosmology. In addition, because Ly is a resonance line,…

astro-ph.GA2025★ 2 cited

DESI Emission-line Galaxies: Clustering Dependence on Stellar Mass and [OII] Luminosity

T. Hagen, K. S. Dawson, Z. Zheng +49

We measure the projected two-point correlation functions of emission-line galaxies (ELGs) from the Dark Energy Spectroscopic Instrument (DESI) One-Percent Survey and model their de…

astro-ph.GA2025

SpecDis: Value added distance catalogue for 4 million stars from DESI Year-1 data

Songting Li, Wenting Wang, Sergey E. Koposov +55

We present the SpecDis value added stellar distance catalog accompanying DESI DR1. SpecDis trains a feed-forward Neural Network (NN) with Gaia parallaxes and gets the distance esti…

astro-ph.GA2025★ 8 cited

PAC in DESI. I. Galaxy Stellar Mass Function into the Frontier

Kun Xu, Y. P. Jing, Shaun Cole +34

The Photometric Objects Around Cosmic Webs (PAC) method integrates cosmological photometric and spectroscopic surveys, offering valuable insights into galaxy formation. PAC measure…

astro-ph.GA2024

Tripling the Census of Dwarf AGN Candidates Using DESI Early Data

Ragadeepika Pucha, S. Juneau, Arjun Dey +46

Using early data from the Dark Energy Spectroscopic Instrument (DESI) survey, we search for AGN signatures in 410,757 line-emitting galaxies. By employing the BPT emission-line rat…

astro-ph.GA2024★ 1 cited

DESI Emission Line Galaxies: Unveiling the Diversity of [OII] Profiles and its Links to Star Formation and Morphology

Ting-Wen Lan, J. Xavier Prochaska, John Moustakas +34

We study the [OII] profiles of emission line galaxies (ELGs) from the Early Data Release of the Dark Energy Spectroscopic Instrument (DESI). To this end, we decompose and classify…

astro-ph.GA2024★ 31 cited

Value Added Catalog of physical properties of more than 1.3 million galaxies from the DESI Survey

M. Siudek, R. Pucha, M. Mezcua +50

Aims. We present an extensive catalog of the physical properties of more than a million galaxies within the Dark Energy Spectroscopic Instrument (DESI), one of the largest spectros…