Research output

Publications

Peer-reviewed research and scholarly contributions.

130Total papers14Primary author6Postdoc-led16Student-led24Contributor
Full author profilesADS ↗Google Scholar ↗ORCID ↗
Research mixshare of work by area
Discovery 45%Interpretability 21%Inference 21%Statistical Learning 12%
Citations received per year16,908 total · peak 3,804 in 2025
1005001,0002,0003,00020162018202020222024
Publications by year & rolehover or tab through the bars
010203020122014201620182020202220242026Primary authorPostdoc-ledStudent-ledContributorOther
Research impact by roleRIQ vs. the typical astronomer range
typical range02004006002012201420162018202020222024All papers (463)Primary author (429)Contributor (253)Student-led (110)Postdoc-led (94)

Why these figures? I find it easier to see what I work on and the impact it’s had as a picture than as a list — so rather than just enumerate papers, these summarize the record a few ways. Research mix shows what the work is about, weighting each paper by its classification across the four areas. The role breakdowns separate work led as primary author from work led by postdocs, students, and larger collaborations. (Citations use a square-root scale so the early years stay legible; the current partial year is omitted.) RIQ (Research Impact Quotient) normalizes citation impact by career length — roughly √(total citations) ÷ years active — so impact compares fairly across career stages instead of just growing with time; the shaded band is the typical range for established astronomers (Pepe & Kurtz 2012).

It's a matter of time: Empirical Constraints on Supernova Yields and Delay Times from Dwarf Spheroidal Galaxies

M. Heiger, A. Ji, J. Speagle et al. · arXiv e-prints · 2026
★ FeaturedStudent-ledDiscovery & UnderstandingADSarXivDOI

The chemical abundances of a stellar population encode information about nucleosynthesis and its astrophysical sites, but this information is confounded by the specific star formation history of the host galaxy. As a result, placing empirical constraints on supernova yields and timing using abundances has been very challenging. We…

Deriving Stellar Properties, Distances, and Reddenings using Photometry and Astrometry with BRUTUS

J. Speagle, C. Zucker, A. Beane et al. · arXiv e-prints · 2025 · 2 citations
★ FeaturedInterpretability & InsightInference & ComputationADSarXivDOI

We present brutus, an open source Python package for quickly deriving stellar properties, distances, and reddenings to stars based on grids of stellar models constrained by photometric and astrometric data. We outline the statistical framework for deriving these quantities, its implementation, and various Galactic priors over the 3-D…

An Ancient Descendant of the First Galaxies

J. Antwi-Danso, A. Muzzin, L. Robbins et al. · arXiv e-prints · 2025
★ FeaturedPostdoc-ledDiscovery & UnderstandingADSarXivDOI

JWST has revealed unexpectedly bright galaxies in the first 500 Myr after the Big Bang. Their overabundance suggests that they are preferentially observed during burst phases, where their star formation rates increase dramatically. In cosmological simulations, such bursts transition into short ($\approx 40$ Myr) periods without star…

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