8 citations · 15 across the 16 of their papers we have counts for
15 papers · 1 filter
A High-Mass Size Deficit for Void Galaxies in the Complete SDSS DR7
Olivia Curtis, Bryanne McDonough, Tereasa G. Brainerd
We characterize how environment shapes the sizes, luminosity functions, and mass functions of galaxies in large-scale underdensities by comparing the NSA catalog of the Sloan Digit…
Population III Host Candidates at : Strong He II and Absent UV Metal Lines in HETDEX Ly Emitters
Mahan Mirza Khanlari, Dustin Davis, Karl Gebhardt +15
Population III (Pop III) stars are expected to produce extremely hard ionizing spectra, yet direct evidence for their signature--strong narrow He II emission with wea…
A Spectral Framework for Testing the Quasi-Star Hypothesis in Little Red Dots I: Weighing LRDs by Their Super-Eddington Luminosity Ratios---No Signs of Overmassive Black Holes
Olivia Curtis, Nikko J. Cleri, Jakob M. Helton +2
We present a spectral test of the quasi-star hypothesis for Little Red Dots (LRDs) whereby a black hole grows inside a stellar-like envelope. We use Prospector to fit host galaxies…
The Ĝ Infrared Search for Extraterrestrial Civilizations with Large Energy Supplies. V. When Galaxies Glow with Industry
Olivia Curtis, Aidan J. Rowland, Jason T. Wright +3
We present the most robust stellar population synthesis (SPS)-based search for galaxy-spanning technological waste heat to date, applied to 129 nearby galaxies spanning a wide rang…
Project Hephaistos -- IV. James Webb Space Telescope Observations of Two Dyson Sphere Candidates
Erik Zackrisson, Arjan Bik, Anita Ali Asgar +11
We report on JWST/MIRI imaging and spectroscopy of two M-dwarf stars previously singled out by project Hephaistos as potential Dyson-sphere candidates (their candidates D and E) du…
HETDEX Public Data Release 1: Source Catalog 2 and Data Cubes from ~90 sq deg of Integral-Field Optical Spectroscopy
Erin Mentuch Cooper, Karl Gebhardt, Dustin Davis +36
The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) is a wide-field, integral-field spectroscopic survey designed to map the large-scale distribution of Lyman-alpha emitting…
RUBIES: The Evolution of the Ionization Parameter from 0 < z < 9
Nikko J. Cleri, Zach J. Lewis, Joel Leja +10
The dimensionless ionization parameter, U=q/c, where q is the ratio of the local ionizing photon flux to the local hydrogen density, is a key metric to parameterize nebular conditi…
The Dyson Minds 2025 Workshop: SETI around Black Holes
Olivia Curtis, Van Hunter Adams, Daniel Angerhausen +9
The Dyson Minds 2025 Workshop, held at the Center for Brains, Minds & Machines at MIT and organized by Penn State, MIT, and The Ultraintelligence Foundation, brought together resea…
It's More Complicated Than You Think: A Forward Model to Infer the Recent Star Formation History, Bursty or Not, of Galaxy Populations
Emilie Burnham, Bingjie Wang, Joel Leja +14
Observations of the early Universe (z > 4) with the James Webb Space Telescope reveal galaxy populations with a wide range of intrinsic luminosities and colors. Bursty star formati…
Void Galaxies and AGN Activity in ZOBOV-identified TNG300 Voids Out to z=3.0
Olivia Curtis, Bryanne McDonough, Tereasa Brainerd
We study void galaxies in the TNG300 simulation between redshifts and . Cosmic void catalogs were constructed using a watershed-based void-finding algorithm, and we defi…
Density Profiles of TNG300 Voids across Cosmic Time
Olivia Curtis, Bryanne McDonough, Tereasa Brainerd
We present radial density profiles, as traced by luminous galaxies and dark matter particles, for voids in eleven snapshots of the \texttt{TNG300} simulation. The snapshots span 11…
Measuring Scaling Relationships: Fitting Technique Matters
Bryanne McDonough, Olivia Curtis, Tereasa Brainerd
Scaling relationships, both integrated and spatially resolved, arise due to the physical processes that govern galaxy evolution and are frequently measured in both observed and sim…
Intrinsic and Environmental Effects on the Distribution of Star Formation in TNG100 Galaxies
Bryanne McDonough, Olivia Curtis, Tereasa Brainerd
We present radial profiles of luminosity-weighted age, , and for various populations of high- and low- mass central and satellite galaxies in the TNG100 cosmologi…
Properties of Voids and Void Galaxies in the TNG300 Simulation
Olivia Curtis, Bryanne McDonough, Tereasa G. Brainerd
We investigate the properties of voids and void galaxies in the \texttt{TNG300} simulation. Using a luminous galaxy catalog and a spherical void finding algorithm, we identify 5,07…
Resolved star formation in TNG100 central and satellite galaxies
Bryanne McDonough, Olivia Curtis, Tereasa Brainerd
Recent cosmological hydrodynamical simulations have produced populations of numerical galaxies whose global star-forming properties are in good agreement with those of observed gal…