2.2k citations · 12.3k across the 114 of their papers we have counts for
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Learning Reionization History from Quasars with Simulation-Based Inference
Huanqing Chen, Joshua Speagle, Keir K. Rogers
Understanding the entire history of the ionization state of the intergalactic medium (IGM) is at the frontier of astrophysics and cosmology. A promising method to achieve this is b…
Hierarchical Bayesian Inference of Globular Cluster Properties
Robin Y. Wen, Joshua S. Speagle, Jeremy J. Webb +1
We present a hierarchical Bayesian inference approach to estimating the structural properties and the phase space center of a globular cluster (GC) given the spatial and kinematic…
Zephyr : Stitching Heterogeneous Training Data with Normalizing Flows for Photometric Redshift Inference
Zechang Sun, Joshua S. Speagle, Song Huang +2
We present zephyr, a novel method that integrates cutting-edge normalizing flow techniques into a mixture density estimation framework, enabling the effective use of heterogeneous…
A catalogue of Galactic GEMS: Globular cluster Extra-tidal Mock Stars
Steffani M. Grondin, Jeremy J. Webb, James M. M. Lane +2
This work presents the Globular cluster Extra-tidal Mock Star (GEMS) catalogue of extra-tidal stars and binaries created via three-body dynamical encounters in globular cluster cor…
DESI Complete Calibration of the Color-Redshift Relation (DC3R2): Results from early DESI data
J. McCullough, D. Gruen, A. Amon +46
We present initial results from the Dark Energy Spectroscopic Instrument (DESI) Complete Calibration of the Color-Redshift Relation (DC3R2) secondary target survey. Our analysis us…
Dynamical masses across the Hertzsprung-Russell diagram
Hsiang-Chih Hwang, Yuan-Sen Ting, Sihao Cheng +1
We infer the dynamical masses of stars across the Hertzsprung-Russell (H-R) diagram using wide binaries from the Gaia survey. Gaia's high-precision astrometry measures the wide bin…
Extending the Chemical Reach of the H3 Survey: Detailed Abundances of the Dwarf-galaxy Stellar Stream Wukong/LMS-1
Guilherme Limberg, Alexander P. Ji, Rohan P. Naidu +10
We present the first detailed chemical-abundance analysis of stars from the dwarf-galaxy stellar stream Wukong/LMS-1 covering a wide metallicity range ($-3.5 < \rm[Fe/H] \lesssim -…
A parsec-scale Galactic 3D dust map out to 1.25 kpc from the Sun
Gordian Edenhofer, Catherine Zucker, Philipp Frank +4
High-resolution 3D maps of interstellar dust are critical for probing the underlying physics shaping the structure of the interstellar medium, and for foreground correction of astr…
A Novel Application of Conditional Normalizing Flows: Stellar Age Inference with Gyrochronology
Phil Van-Lane, Joshua S. Speagle, Stephanie Douglas
Stellar ages are critical building blocks of evolutionary models, but challenging to measure for low mass main sequence stars. An unexplored solution in this regime is the applicat…
Roman Early-Definition Astrophysics Survey Opportunity: Galactic Roman Infrared Plane Survey (GRIPS)
Roberta Paladini, Catherine Zucker, Robert Benjamin +67
A wide-field near-infrared survey of the Galactic disk and bulge/bar(s) is supported by a large representation of the community of Galactic astronomers. The combination of sensitiv…
Closing the stellar labels gap: An unsupervised, generative model for BP/RP spectra
Alexander Laroche, Joshua S. Speagle
The recent release of 220+ million BP/RP spectra in DR3 presents an opportunity to apply deep learning models to an unprecedented number of stellar spectra, at extr…
The FENIKS Survey: Spectroscopic Confirmation of Massive Quiescent Galaxies at z ~ 3-5
Jacqueline Antwi-Danso, Casey Papovich, James Esdaile +13
The measured ages of massive, quiescent galaxies at imply that massive galaxies quench as early as . While the number of spectroscopic confirmations of quiesce…
As Simple as Possible but No Simpler: Optimizing the Performance of Neural Net Emulators for Galaxy SED Fitting
Elijah P. Mathews, Joel Leja, Joshua S. Speagle +7
Artificial neural network emulators have been demonstrated to be a very computationally efficient method to rapidly generate galaxy spectral energy distributions (SEDs), for parame…
NANCY: Next-generation All-sky Near-infrared Community surveY
Jiwon Jesse Han, Arjun Dey, Adrian M. Price-Whelan +206
The Nancy Grace Roman Space Telescope is capable of delivering an unprecedented all-sky, high-spatial resolution, multi-epoch infrared map to the astronomical community. This oppor…
The HERBAL model: A hierarchical errors-in-variables Bayesian lognormal hurdle model for galactic globular cluster populations
Samantha C. Berek, Gwendolyn M. Eadie, Joshua S. Speagle +1
Galaxy stellar mass is known to be monotonically related to the size of the galaxy's globular cluster (GC) population for Milky Way sized and larger galaxies. However, the relation…
Disentangling Stellar Age Estimates from Galactic Chemodynamical Evolution
Jeff Shen, Joshua S. Speagle, J. Ted Mackereth +2
Stellar ages are key for determining the formation history of the Milky Way, but are difficult to measure precisely. Furthermore, methods that use chemical abundances to infer ages…
SBI++: Flexible, Ultra-fast Likelihood-free Inference Customized for Astronomical Applications
Bingjie Wang, Joel Leja, V. Ashley Villar +1
Flagship near-future surveys targeting galaxies across cosmic time will soon reveal the processes of galaxy assembly in unprecedented resolution. This creates an immedi…
Practical Guidance for Bayesian Inference in Astronomy
Gwendolyn M. Eadie, Joshua S. Speagle, Jessi Cisewski-Kehe +5
In the last two decades, Bayesian inference has become commonplace in astronomy. At the same time, the choice of algorithms, terminology, notation, and interpretation of Bayesian i…