activity
20052026
most citedThe Milky Way's Circular Velocity Curve to 60 kpc and an Estimate of the Dark Matter Halo Mass from Kinematics of ~2400 SDSS Blue Horizontal Branch Stars

736 citations · 5k across the 36 of their papers we have counts for

collaborators

37 papers

astro-ph.SR2026

S-PLUS: Beyond Spectroscopy IV. Stellar Parameters and Elemental-abundance Ratios for Six Million Stars from DR4 and First Results for the Magellanic Clouds

Yang Huang, Timothy C. Beers, Kai Xiao +18

We combine narrow/medium-band filter photometry from the Southern Photometric Local Universe Survey (S-PLUS) DR4 with ultra broad-band filter photometry from Gaia EDR3 to derive fu…

astro-ph.GA2024

The -Process Alliance: Enrichment of -process Elements in a Simulated Milky Way-like Galaxy

Yutaka Hirai, Timothy C. Beers, Young Sun Lee +11

We study the formation of stars with varying amounts of heavy elements synthesized by the rapid neutron-capture process (-process) based on our detailed cosmological zoom-in sim…

astro-ph.SR2023

rrlfe: Software for Generating and Applying Metallicity Calibrations for RR Lyrae Variable Stars Across a Wide Range of Phases and Temperatures

Eckhart Spalding, Ronald Wilhelm, Nathan De Lee +7

RR Lyrae stars play a central role in tracing phase-space structures within the Milky Way because they are easy to identify, are relatively luminous, and are found in large numbers…

astro-ph.GA2023

Beyond spectroscopy. II. Stellar parameters for over twenty million stars in the northern sky from SAGES DR1 and Gaia DR3

Yang Huang, Timothy C. Beers, Hai-Bo Yuan +18

We present precise photometric estimates of stellar parameters, including effective temperature, metallicity, luminosity classification, distance, and stellar age, for nearly 26 mi…

astro-ph.GA2022

Estimation of Nitrogen-to-Iron Abundance Ratios From Low-Resolution Spectra

Changmin Kim, Young Sun Lee, Timothy C. Beers +1

We present a method to determine nitrogen abundance ratios with respect to iron ([N/Fe]) from molecular CN-band features observed in low-resolution ( 2000) stellar spectra…

astro-ph.GA2021★ 49 cited

The Photometric Metallicity and Carbon Distributions of the Milky Way's Halo and Solar Neighborhood from S-PLUS Observations of SDSS Stripe 82

Devin D. Whitten, Vinicius M. Placco, Timothy C. Beers +14

We report photometric estimates of effective temperature, , metallicity, [Fe/H], carbonicity, [C/Fe], and absolute carbon abundances, , for over 700,000 st…