Josephine F. W. Baggen

RUBIES: Evolved Stellar Populations with Extended Formation Histories at z ∼ 7–8 in Candidate Massive Galaxies Identified with JWST/NIRSpec

Bingjie Wang, Joel Leja, Anna de Graaff et al. · The Astrophysical Journal Letters · 2024 · 118 citations · Full text

Natural Sciences, Astronomy, Physics +15

The Small Sizes and High Implied Densities of “Little Red Dots” with Balmer Breaks Could Explain Their Broad Emission Lines without an Active Galactic Nucleus

Josephine F. W. Baggen, Pieter van Dokkum, Gabriel Brammer et al. · The Astrophysical Journal Letters · 2024 · 101 citations · Full text

Natural Sciences, Astronomy, Physics +9

Sizes and Mass Profiles of Candidate Massive Galaxies Discovered by JWST at 7 < z < 9: Evidence for Very Early Formation of the Central ∼100 pc of Present-day Ellipticals

Josephine F. W. Baggen, Pieter van Dokkum, Ivo Labbé et al. · The Astrophysical Journal Letters · 2023 · 74 citations · Full text

Natural Sciences, Astronomy, Physics +13

A remarkable ruby: Absorption in dense gas, rather than evolved stars, drives the extreme Balmer break of a little red dot at <i>z</i> = 3.5

Anna de Graaff, Hans‐Walter Rix, Rohan P. Naidu et al. · Astronomy and Astrophysics · 2025 · 59 citations · Full text

Natural Sciences, Astronomy, Physics +17

RUBIES Reveals a Massive Quiescent Galaxy at <i>z</i> = 7.3

Andrea Weibel, Anna de Graaff, David J. Setton et al. · The Astrophysical Journal · 2025 · 53 citations · Full text

Natural Sciences, Astronomy, Physics +15