152 citations · 826 across the 22 of their papers we have counts for
22 papers
Open Problems in AI Risk Modeling: Insights from a Workshop on the Technical Foundations of AI Risk Modeling
Krystal Jackson, Deepika Raman, Jakub Kryś +8
We investigate the design of robust risk models to assess societal risks posed by advanced AI systems, an emerging area in AI governance. Many regulatory proposals increasingly req…
Exploring Systems-Thinking Approaches to Loss of Control Risk
Aurelio Carlucci, Sean P. Fillingham, James Walpole +1
Internal deployment of agentic AI systems for coding and research creates a sociotechnical control problem that extends beyond model behaviour. We treat internal-deployment Loss of…
Lessons from External Review of DeepMind's Scheming Inability Safety Case
Stephen Barrett, Francisco Javier Campos Zabala, Sean P. Fillingham +4
Safety cases for frontier AI systems should provide a convincing argument, supported by evidence, that the risk of harm is within an acceptable bound. When developers author their…
STAMP/STPA Informed Characterization of Factors Leading to Loss of Control in AI Systems
Steve Barrett, Anna Bruvere, Sean P. Fillingham +2
A major concern amongst AI safety practitioners is the possibility of loss of control, whereby humans lose the ability to exert control over increasingly advanced AI systems. The r…
SCALAR: Benchmarking SAE Interaction Sparsity in Toy LLMs
Sean P. Fillingham, Andrew Gordon, Peter Lai +3
Mechanistic interpretability aims to decompose neural networks into interpretable features and map their connecting circuits. The standard approach trains sparse autoencoders (SAEs…
The importance of gas starvation in driving satellite quenching in galaxy groups at
Devontae C. Baxter, Sean P. Fillingham, Alison L. Coil +1
We present results from a Keck/DEIMOS survey to study satellite quenching in group environments at within the Extended Groth Strip (EGS). We target groups in the…
BreakBRD Galaxies: Evolutionary Clues Through an Analysis of Gas Content
David V. Stark, Sarah Tuttle, Stephanie Tonnesen +1
By combining newly obtained deep GBT 21cm observations with optical spectroscopic data, we present an analysis of the gas content of BreakBRD galaxies, a population denoted by thei…
The Lick AGN Monitoring Project 2016: Dynamical Modeling of Velocity-Resolved H\b{eta} Lags in Luminous Seyfert Galaxies
Lizvette Villafaña, Peter R. Williams, Tommaso Treu +62
We have modeled the velocity-resolved reverberation response of the H\b{eta} broad emission line in nine Seyfert 1 galaxies from the Lick Active Galactic Nucleus (AGN) Monitioring…
The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar and APOGEE-2 Data
Abdurro'uf, Katherine Accetta, Conny Aerts +337
This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the complete…
The Lick AGN Monitoring Project 2016: Velocity-Resolved Hβ Lags in Luminous Seyfert Galaxies
Vivian U, Aaron J. Barth, H. Alexander Vogler +61
We carried out spectroscopic monitoring of 21 low-redshift Seyfert 1 galaxies using the Kast double spectrograph on the 3-m Shane telescope at Lick Observatory from April 2016 to M…
APOGEE Chemical Abundance Patterns of the Massive Milky Way Satellites
Sten Hasselquist, Christian R. Hayes, Jianhui Lian +42
The SDSS-IV Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey has obtained high-resolution spectra for thousands of red giant stars distributed among the massi…
Sizing from the Smallest Scales: The Mass of the Milky Way
M. K. Rodriguez Wimberly, M. C. Cooper, D. C. Baxter +6
As the Milky Way and its satellite system become more entrenched in near field cosmology efforts, the need for an accurate mass estimate of the Milky Way's dark matter halo is incr…
A Machine Learning Approach to Measuring the Quenched Fraction of Low-Mass Satellites Beyond the Local Group
Devontae C. Baxter, M. C. Cooper, Sean P. Fillingham
Observations suggest that satellite quenching plays a major role in the build-up of passive, low-mass galaxies at late cosmic times. Studies of low-mass satellites, however, are li…
Dark Matter Interpretation of the Fermi-LAT Observations Toward the Outer Halo of M31
Chris Karwin, Simona Murgia, Igor Moskalenko +3
An excess -ray signal toward the outer halo of M31 has recently been reported. Although other explanations are plausible, the possibility that it arises from dark matter (DM) is…
The GOGREEN and GCLASS Surveys: First Data Release
Michael L. Balogh, Remco F. J. van der Burg, Adam Muzzin +42
We present the first public data release of the GOGREEN and GCLASS surveys of galaxies in dense environments, spanning a redshift range . The surveys consist of deep, mu…
Characterizing the Infall Times and Quenching Timescales of Milky Way Satellites with Proper Motions
Sean P. Fillingham, Michael C. Cooper, Tyler Kelley +6
Observations of low-mass satellite galaxies in the nearby Universe point towards a strong dichotomy in their star-forming properties relative to systems with similar mass in the fi…
The Suppression of Star Formation on the Smallest Scales: What Role Does Environment Play?
M. K. Rodriguez Wimberly, M. C. Cooper, S. P. Fillingham +3
The predominantly ancient stellar populations observed in the lowest-mass galaxies (i.e. ultra-faint dwarfs) suggest that their star formation was suppressed by reionization. Most…
The Evolution of Environmental Quenching Timescales to
R. Foltz, G. Wilson, A. Muzzin +18
Using a sample of 4 galaxy clusters at and 10 galaxy clusters at , we measure the environmental quenching timescale, , corresponding to the…
Environmental Quenching of Low-Mass Field Galaxies
Sean P. Fillingham, Michael C. Cooper, Michael Boylan-Kolchin +3
In the local Universe, there is a strong division in the star-forming properties of low-mass galaxies, with star formation largely ubiquitous amongst the field population while sat…
Discovery and Follow-up Observations of the Young Type Ia Supernova 2016coj
WeiKang Zheng, Alexei V. Filippenko, Jon Mauerhan +39
The Type~Ia supernova (SN~Ia) 2016coj in NGC 4125 (redshift ) was discovered by the Lick Observatory Supernova Search 4.9 days after the fitted first-light time (FFLT;…
Under Pressure: Quenching Star Formation in Low-Mass Satellite Galaxies via Stripping
Sean P. Fillingham, Michael C. Cooper, Andrew B. Pace +4
Recent studies of galaxies in the local Universe, including those in the Local Group, find that the efficiency of environmental (or satellite) quenching increases dramatically at s…
Taking Care of Business in a Flash: Constraining the Timescale for Low-Mass Satellite Quenching with ELVIS
Sean P. Fillingham, Michael C. Cooper, Coral Wheeler +3
The vast majority of dwarf satellites orbiting the Milky Way and M31 are quenched, while comparable galaxies in the field are gas-rich and star-forming. Assuming that this dichotom…