Publications
A complete and up-to-date list is available on NASA/ADS.
First-author papers
(Re)solving the Complex Multiscale Morphology and V-shaped Spectral Energy Distribution of a Newly Discovered Strongly Lensed Little Red Dot in A383
J. F. W. Baggen, P. van Dokkum, I. Labbé, G. Brammer
ApJL 1006, L14 (2026)
Connecting the Dots: UV-bright Companions of Little Red Dots as Lyman–Werner Sources Enabling Direct-collapse Black Hole Formation
J. F. W. Baggen, M. T. Scoggins, P. van Dokkum, Z. Haiman, A. Torralba, et al.
ApJL 1002, L4 (2026)
The Impact of Baryonic Effects on the Dynamical Masses Inferred Using Satellite Kinematics
J. F. W. Baggen, F. C. van den Bosch, K. Mitra
The Open Journal of Astrophysics 9, 58198 (2026)
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
J. F. W. Baggen, P. van Dokkum, G. Brammer, A. de Graaff, M. Franx, et al.
ApJL 977, L13 (2024)
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
J. F. W. Baggen, P. van Dokkum, I. Labbé, G. Brammer, T. B. Miller, et al.
ApJL 955, L12 (2023)
Co-authored papers
A gas-enshrouded and gas-reddened black hole at cosmic dawn
R. P. Naidu, J. Matthee, H. Katz, A. de Graaff, P. A. Oesch, et al. (incl. J. F. W. Baggen)
Nature 656, 329 (2026)
How can we finally see the first light? Status and perspective in the search for Population III stars
A. Venditti, D. Schaerer, E. Zackrisson, Y. Asada, H. Katz, et al. (incl. J. F. W. Baggen)
The Open Journal of Astrophysics 9, 67811 (2026)
Balmer Absorption Series and Broad Metal Lines in Two Luminous Little Red Dots
B. Wang, J. E. Greene, H. Liu, N. Kaaz, G. B. Brammer, et al. (incl. J. F. W. Baggen)
arXiv:2609.22623 (2026)
Quiescent or dusty? Unveiling the nature of extremely red galaxies at z > 3
L. Barrufet, P. A. Oesch, R. Marques-Chaves, K. Arellano-Cordova, J. F. W. Baggen, et al.
MNRAS 537, 3453 (2025)
Irony at z = 6.68: a bright AGN with forbidden Fe emission and multi-component Balmer absorption
F. D’Eugenio, E. Nelson, X. Ji, J. F. W. Baggen, J. Greene, et al.
arXiv:2510.00101 (2025)
A remarkable ruby: Absorption in dense gas, rather than evolved stars, drives the extreme Balmer break of a little red dot at z = 3.5
A. de Graaff, H.-W. Rix, R. P. Naidu, I. Labbé, B. Wang, et al. (incl. J. F. W. Baggen)
A&A 701, A168 (2025)
BASILISK IV. No S8 Tension with Satellite Kinematics
K. Mitra, F. C. van den Bosch, J. F. W. Baggen, J. U. Lange
arXiv:2512.14889 (2025)
The ∞ Galaxy: A Candidate Direct-collapse Supermassive Black Hole between Two Massive, Ringed Nuclei
P. van Dokkum, G. Brammer, J. F. W. Baggen, M. A. Keim, P. Natarajan, et al.
ApJL 988, L6 (2025)
Further Evidence for a Direct-collapse Origin of the Supermassive Black Hole at the Center of the ∞ Galaxy
P. van Dokkum, G. Brammer, C. Jennings, I. Pasha, J. F. W. Baggen
ApJL 990, L48 (2025)
RUBIES Reveals a Massive Quiescent Galaxy at z = 7.3
A. Weibel, A. de Graaff, D. J. Setton, T. B. Miller, P. A. Oesch, et al. (incl. J. F. W. Baggen)
ApJ 983, 11 (2025)
RUBIES: Evolved Stellar Populations with Extended Formation Histories at z ~ 7–8 in Candidate Massive Galaxies Identified with JWST/NIRSpec
B. Wang, J. Leja, A. de Graaff, G. B. Brammer, A. Weibel, et al. (incl. J. F. W. Baggen)
ApJL 969, L13 (2024)
Comparing hypervelocity star populations from the Large Magellanic Cloud and the Milky Way
F. A. Evans, T. Marchetti, E. M. Rossi, J. F. W. Baggen, S. Bloot
MNRAS 507, 4997 (2021)