activity
20242026
most citedThe GALAH Survey: Data Release 4

11 citations · 13 across the 7 of their papers we have counts for

collaborators

7 papers

astro-ph.SR2026

They Won't Be Giants: Missing Metal-Rich RGB Stars in Gaia Data Indicate Truncated Stellar Evolution

Yuxi Lu, Madeline Howell, Marc H. Pinsonneault +3

We investigate the population of luminous red giant branch stars as a function of metallicity using Gaia XP metallicity combined with SDSS-V, GALAH, and LAMOST. After applying unif…

astro-ph.SR2026

Detecting Solar-Like Oscillations in the Highest Mass TESS Giants

Noah J. Downing, Madeline Howell, Marc H. Pinsonneault +4

Red-giant asteroseismology yields precise stellar parameters, making it a powerful tool for studying stellar structure and evolution, as demonstrated by the Kepler mission. However…

astro-ph.SR2026

TESS Asteroseismology of Red Giants in the Old Metal-Rich Open Clusters NGC 188 & NGC 6791

Madeline Howell, Jennifer A. Johnson, Marc H. Pinsonneault +5

Open clusters are fundamental laboratories for investigating stellar and Galactic evolution, and serve as important benchmarks for asteroseismic analyses. Using a boutique method t…

astro-ph.SR2026

[C/N] Ages and Extra-Mixing for [Fe/H] <- 0.5: Insights from the LMC and SMC

Yuxi Lu, John D. Roberts, Joshua T. Povick +4

The [C/N]-age relation has become a powerful tool for reconstructing the formation history of the Milky Way (MW), providing the largest age sample for field giant stars. However, a…

astro-ph.SR2026

Checking It Twice: Using [C/N]-Masses and Asteroseismic Masses as a Diagnostic of Mass Loss and Transfer on the RGB

John D. Roberts, Marc H. Pinsonneault, Jennifer A. Johnson +1

The surface [C/N] of red giants is correlated with birth mass, but not directly impacted by mass loss. Exploiting this, we compare asteroseismic masses of red giants with the same…

astro-ph.SR2025★ 2 cited

A nearly pristine star from the Large Magellanic Cloud

Alexander P. Ji, Vedant Chandra, Selenna Mejias-Torres +28

The first stars formed out of pristine gas, causing them to be so massive that none are expected to have survived until today. If their direct descendants were sufficiently low-mas…

astro-ph.GA2024★ 11 cited

The GALAH Survey: Data Release 4

S. Buder, J. Kos, E. X. Wang +36

The stars of the Milky Way carry the chemical history of our Galaxy in their atmospheres as they journey through its vast expanse. Like barcodes, we can extract the chemical finger…