Publications (81)
The Wide Field Infrared Survey Telescope: 100 Hubbles for the 2020s
Rachel Akeson, Lee Armus, Etienne Bachelet +103
The Wide Field Infrared Survey Telescope (WFIRST) is a 2.4m space telescope with a 0.281 deg^2 field of view for near-IR imaging and slitless spectroscopy and a coronagraph designe…
Local Analogs of Primordial Galaxies: In Search of Intermediate Mass Black Holes with JWST NIRSpec
Sara Doan, Shobita Satyapal, William Matzko +15
Local low metallicity galaxies with signatures of possible accretion activity are ideal laboratories in which to search for the lowest mass black holes and study their impact on th…
Predictive Coding: a Theoretical and Experimental Review
Beren Millidge, Anil Seth, Christopher L Buckley
Predictive coding offers a potentially unifying account of cortical function -- postulating that the core function of the brain is to minimize prediction errors with respect to a g…
The Panchromatic Hubble Andromeda Treasury XXI. The Legacy Resolved Stellar Photometry Catalog
Benjamin F. Williams, Meredith Durbin, Dustin Lang +14
We present the final legacy version of stellar photometry for the Panchromatic Hubble Andromeda Treasury (PHAT) survey. We have reprocessed all of the Hubble Space Telescope (HST)…
Constraining the role of star cluster mergers in nuclear cluster formation: Simulations confront integral-field data
Markus Hartmann, Victor P. Debattista, Anil Seth +2
We present observations and dynamical models of the stellar nuclear clusters (NCs) at the centres of NGC 4244 and M33. We then compare these to an extensive set of simulations test…
Towards Understanding the Milky Way's Typicality: Assessing the Chemodynamics of M31's Bulge & Bar, Thick & Thin Discs
Benjamin J. Gibson, Gail Zasowski, Anil Seth +6
We describe a novel framework to model galaxy spectra with two cospatial stellar populations, such as may represent a bulge & bar or thick & thin disc, and apply it to APOGEE spect…
The Intermediate Mass Black Hole in Omega Centauri: Constraints on Accretion from JWST
Steven Chen, Jeremy Hare, Oleg Kargaltsev +4
We analyze JWST observations of the central region of the globular cluster Centauri (NGC 5139, Cen hereafter), around the position of the candidate IMBH inferred by \cite…
SDSS-V Local Volume Mapper (LVM): The Integrated Light and Internal Rotation of Omega Centauri
Maximilian Häberle, Dmitry Bizyaev, Alina Boecker +34
The SDSS-V Local Volume Mapper (LVM) is a wide-field integral field spectroscopic survey of the Southern Milky Way plane, the Magellanic Clouds, and nearby Local Group galaxies. We…
Nuclear X-ray Activity in Low-Surface-Brightness Galaxies: Prospects for Constraining the Local Black Hole Occupation Fraction with a Chandra Successor Mission
Edmund Hodges-Kluck, Elena Gallo, Anil Seth +2
About half of nearby galaxies have a central surface brightness >1 magnitude below that of the sky. The overall properties of these low-surface-brightness galaxies (LSBGs) remain u…
A Multi-wavelength Study of the Turbulent Central Engine of the Low-mass AGN hosted by NGC404
Kristina Nyland, Timothy A. Davis, Dieu D. Nguyen +9
The nearby dwarf galaxy NGC404 harbors a low-luminosity active galactic nucleus (AGN) powered by the lowest-mass (< 150,000 solar-masses) central massive black hole (MBH) with a dy…
Nuclear Star Clusters
Nadine Neumayer, Anil Seth, Torsten Boeker
We review the current knowledge about nuclear star clusters (NSCs), the spectacularly dense and massive assemblies of stars found at the centers of most galaxies. Recent observatio…
Star Clusters in Virgo and Fornax Dwarf Irregular Galaxies
Anil Seth, Knut Olsen, Bryan Miller +2
We present the results of a search for clusters in dwarf irregular galaxies in the Virgo and Fornax Cluster using HST WFPC2 snapshot data. The galaxy sample includes 28 galaxies, 1…
Relaxing the Constraints on Predictive Coding Models
Beren Millidge, Alexander Tschantz, Anil Seth +1
Predictive coding is an influential theory of cortical function which posits that the principal computation the brain performs, which underlies both perception and learning, is the…
Detection of Enhanced Central Mass-to-Light Ratios in Low-Mass Early-Type Galaxies: Evidence for Black Holes?
Renuka Pechetti, Anil Seth, Michele Cappellari +4
We present dynamical measurements of the central mass-to-light ratio () of a sample of 27 low-mass early-type ATLAS galaxies. We consider all ATLAS galaxies with…
Star Clusters in M31: V. Internal Dynamical Trends: Some Troublesome, Some Reassuring
Jay Strader, Nelson Caldwell, Anil Seth
We present internal velocity dispersions and precise radial velocities for 200 globular clusters (GCs) in M31 that are derived using new high-resolution spectra from MMT/Hectochell…
A Long Period Stellar-Mass Black Hole Binary in Centauri
Matthew Whitaker, Evan Kerr, Anil Seth +16
Modern simulations of stellar dynamics in globular clusters peg a dominant role for stellar-mass black holes, but direct evidence for black holes in clusters remains limited. We pr…
ReveaLLAGN 1: JWST Emission-Line Spectra Reveal Low-Luminosity AGN with UV-Deficient SEDs and Warm Molecular Gas
Kameron Goold, Anil Seth, Mallory Molina +20
We present near- and mid-infrared spectra of eight Low-Luminosity Active Galactic Nuclei (LLAGN), spanning nearly four orders of magnitude in black hole mass and Eddington ratio, o…
Towards a high accuracy measurement of the local black hole occupation fraction in low mass galaxies
Elena Gallo, Edmund Hodges-Kluck, Tommaso Treu +7
This document illustrates the feasibility of a few per cent level measurement of the local black hole occupation fraction in low mass galaxies through wide-field, high angular reso…
The Black Hole - Bulge Mass Relation in Megamaser Host Galaxies
Ronald Läsker, Jenny E. Greene, Anil Seth +4
We present HST images for nine megamaser disk galaxies with the primary goal of studying photometric BH-galaxy scaling relations. The megamaser disks provide the highest-precision…
A tidally disrupting dwarf galaxy in the halo of NGC 253
Elisa Toloba, David Sand, Kristine Spekkens +7
We report the discovery of Scl-MM-Dw2, a new dwarf galaxy at a projected separation of 50 kpc from NGC 253, as part of the PISCeS (Panoramic Imaging Survey of Centaurus and S…
Minimum-phase property of the hemodynamic response function, and implications for Granger Causality in fMRI
Leonardo Novelli, Lionel Barnett, Anil Seth +1
Granger Causality (GC) is widely used in neuroimaging to estimate directed statistical dependence among brain regions using time series of brain activity. An important issue is tha…
Relics of Supermassive Black Hole Seeds: The Discovery of an Accreting Black Hole in an Optically Normal, Low Metallicity Dwarf Galaxy
Jenna M. Cann, Shobita Satyapal, Barry Rothberg +11
The detection and characterization of supermassive black holes (SMBHs) in local low mass galaxies is crucial to our understanding of the origins of SMBHs. This statement assumes th…
Nuclear Star Clusters and Black Holes
Anil Seth, Michele Cappellari, Nadine Neumayer +8
We summarize the recent results of our survey of the nearest nuclear star clusters. The purpose of the survey is to understand nuclear star cluster formation mechanisms and constra…
Young, blue, and isolated stellar systems in the Virgo Cluster. II. A new class of stellar system
Michael G. Jones, David J. Sand, Michele Bellazzini +21
We discuss five blue stellar systems in the direction of the Virgo cluster, analogous to the enigmatic object SECCO 1 (AGC 226067). These objects were identified based on their opt…
The Vertical Structure of Stars in Edge-on Galaxies
Anil Seth, Julianne Dalcanton, Roelof de Jong
We present a summary of our recent work on the vertical distribution of the resolved stellar populations in six low mass, edge-on, spiral galaxies observed with the Hubble Space Te…
Understanding the Origin of Information-Seeking Exploration in Probabilistic Objectives for Control
Beren Millidge, Anil Seth, Christopher Buckley
The exploration-exploitation trade-off is central to the description of adaptive behaviour in fields ranging from machine learning, to biology, to economics. While many approaches…
Jet-driven shocks and turbulence in radio-loud Active Galactic Nuclei observed with JWST MIRI/MRS
Rogemar A. Riffel, Gabriel L. Souza-Oliveira, Luis Colina +34
Jet-cloud interactions are a key manifestation of Active Galactic Nucleus (AGN) feedback on nuclear scales, distinct from the large-scale radio-mode feedback that suppresses gas co…
The HST/ACS Coma Cluster Survey. X. Nuclear star clusters in low-mass early-type galaxies: scaling relations
Mark den Brok, Reynier F. Peletier, Anil Seth +16
We present scaling relations between structural properties of nuclear star clusters and their host galaxies for a sample of early-type dwarf galaxies observed as part of the Hubble…
Training the Next Generation of Astronomers
Peter K. G. Williams, Eric Huff, Holly Maness +28
While both society and astronomy have evolved greatly over the past fifty years, the academic institutions and incentives that shape our field have remained largely stagnant. As a…
The Densest Galaxy
Jay Strader, Anil Seth, Duncan Forbes +8
We report the discovery of a remarkable ultra-compact dwarf galaxy around the massive Virgo elliptical galaxy NGC 4649 (M60), which we term M60-UCD1. With a dynamical mass of 2.0 x…
M94 As A Unique Testbed for Black Hole Mass Estimates and AGN Activity At Low Luminosities
Anca Constantin, Anil Seth
We discuss the peculiar nature of the nucleus of M94 (NGC 4736) in the context of new measurements of the broad H_alpha emission from HST-STIS observations. We show that this compo…
Surprisingly Strong K-band Emission Found in Low Luminosity Active Galactic Nuclei
Antoine Dumont, Anil Seth, Jay Strader +3
We examine the near-infrared (NIR) emission from low-luminosity AGNs (LLAGNs). Our galaxy sample includes 15 objects with detected 2-10 keV X-ray emission, dynamical black hole mas…
Measuring Consistent Masses for 25 Milky Way Globular Clusters
Brian Kimmig, Anil Seth, Inese I. Ivans +4
We present central velocity dispersions, masses, mass to light ratios (s), and rotation strengths for 25 Galactic globular clusters. We derive radial velocities of 1951 stars…
Two stellar-mass black holes in the globular cluster M22
Jay Strader, Laura Chomiuk, Thomas Maccarone +2
Hundreds of stellar-mass black holes likely form in a typical globular star cluster, with all but one predicted to be ejected through dynamical interactions. Some observational sup…
Astro2020 Science White Paper: The Local Relics of of Supermassive Black Hole Seeds
Jenny E Greene, Aaron Barth, Andrea Bellini +18
We have compelling evidence for stellar-mass black holes (BHs) of ~5-80 M_sun that form through the death of massive stars. We also have compelling evidence for so-called supermass…
A Multi-Wavelength Analysis of NGC 4178: A Bulgeless Galaxy with an AGN
Nathan Secrest, Shobita Satyapal, Sean Moran +5
We present {\it Gemini} longslit optical spectroscopy and VLA radio observations of the nuclear region of NGC 4178, a late-type bulgeless disk galaxy recently confirmed to host an…
The Binary Nucleus in VCC 128: A Candidate Supermassive Black Hole in a Dwarf Elliptical Galaxy
Victor P. Debattista, Ignacio Ferreras, Anna Pasquali +3
{\it Hubble Space Telescope} (\hst) Wide Field Planetary Camera 2 ({\it WFPC2}) images of the Virgo Cluster dwarf elliptical galaxy VCC 128 reveal an apparently double nucleus. The…
Resolving the Outer Disks and Halos of Nearby Galaxies
Anil Seth, Roelof de Jong, David Radburn-Smith +1
In a hierarchical merging scenario, the outer parts of a galaxy are a fossil record of the galaxy's early history. Observations of the outer disks and halos of galaxies thus provid…
Radio continuum observations of the candidate supermassive black hole in the dwarf elliptical VCC128
Pieter Buyle, Sven De Rijcke, Victor P. Debattista +4
The presence of black holes (BHs) at the centers of dwarf elliptical galaxies (dEs) has been argued both theoretically and observationally. Using archival HST/WFPC2 data, we found…
JWST Reveals Compact Nuclear Starbursts Masquerading as AGNs in Metal-Poor Dwarfs: Where Are the Accreting Intermediate-Mass Black Holes?
William Matzko, Shobita Satyapal, Jeffrey D. Mckaig +19
We present JWST/NIRSpec spectroscopy of the low-mass, metal-poor galaxy SDSS~J160135.95+311353.7 (J1601), selected for its extreme mid-infrared colors and compact nuclear emission,…
The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER). V. The Structure of M33 in Resolved Stellar Populations
Adam Smercina, Julianne J. Dalcanton, Benjamin F. Williams +13
We present a detailed analysis of the the structure of the Local Group flocculent spiral galaxy M33, as measured using the Panchromatic Hubble Andromeda Treasury Triangulum Extende…
A Supermassive Black Hole in an Ultracompact Dwarf Galaxy
Anil Seth, Remco van den Bosch, Steffen Mieske +11
Ultracompact dwarf galaxies (UCDs) are among the densest stellar systems in the universe. These systems have masses up to 200 million solar masses, but half light radii of just 3-5…
Fast-moving stars around an intermediate-mass black hole in Omega Centauri
Maximilian Häberle, Nadine Neumayer, Anil Seth +15
Black holes have been found over a wide range of masses, from stellar remnants with masses of 5-150 solar masses (Msun), to those found at the centers of galaxies with Msu…
Luminosity Models and Density Profiles for Nuclear Star Clusters for a Nearby Volume-Limited Sample of 29 Galaxies
Renuka Pechetti, Anil Seth, Nadine Neumayer +3
Nuclear Star Clusters (NSCs) are dense clusters of stars that reside in the centers of a majority of the galaxies. In this paper, we study the density profiles for 29 galaxies in a…
The TREX Survey: Kinematical Complexity Throughout M33's Stellar Disk and Evidence for a Stellar Halo
Karoline M. Gilbert, Amanda C. N. Quirk, Puragra Guhathakurta +9
We present initial results from a large spectroscopic survey of stars throughout M33's stellar disk. We analyze a sample of 1667 red giant branch (RGB) stars extending to projected…
The UV, Optical, and IR Properties of SDSS Sources Detected by GALEX
Marcel A. Agueros, Zeljko Ivezic, Kevin R. Covey +18
We discuss the UV, optical, and IR properties of the SDSS sources detected by GALEX as part of its All-sky Imaging Survey Early Release Observations. Virtually all of the GALEX sou…
Extragalactic Thick Disks: Implications for Early Galaxy Evolution
Julianne J. Dalcanton, Anil Seth, Peter Yoachim
I briefly review the growing evidence that thick stellar disks surround most edge-on disk galaxies. Recent studies show that these extragalactic thick disks have old ages, low meta…
A continuity of Markov blanket interpretations under the Free Energy Principle
Anil Seth, Tomasz Korbak, Alexander Tschantz
Bruineberg and colleagues helpfully distinguish between instrumental and ontological interpretations of Markov blankets, exposing the dangers of using the former to make claims abo…
oMEGACat. VI. Analysis of the overall kinematics of Omega Centauri in 3D: velocity dispersion, kinematic distance, anisotropy, and energy equipartition
Maximilian Häberle, Nadine Neumayer, Callie Clontz +15
Omega Centauri ( Cen) is the Milky Way's most massive globular cluster and is likely the stripped nucleus of an accreted dwarf galaxy. In this paper, we analyze Cen's kine…
Using Contour Trees in the Analysis and Visualization of Radio Astronomy Data Cubes
Paul Rosen, Anil Seth, Betsy Mills +5
The current generation of radio and millimeter telescopes, particularly the Atacama Large Millimeter Array (ALMA), offers enormous advances in observing capabilities. While these a…
The Coincidence of Nuclear Star Clusters and Active Galactic Nuclei
Anil Seth, Marcel Agueros, Duane Lee +1
We study galaxies that host both nuclear star clusters and active galactic nuclei (AGN) implying the presence of a massive black hole. We select a sample of 176 galaxies with previ…
Milky Way Analogues in MaNGA: Multi-Parameter Homogeneity and Comparison to the Milky Way
Nicholas Fraser Boardman, Gail Zasowski, Anil Seth +15
The Milky Way provides an ideal laboratory to test our understanding of galaxy evolution, owing to our ability to observe our Galaxy over fine scales. However, connecting the Galax…
Centauri: A MUSE discovery of a counter-rotating core
Renuka Pechetti, Sebastian Kamann, Davor Krajnovic +7
Centauri is considered the most massive globular cluster of the Milky Way and likely the former nuclear star cluster of a galaxy accreted by the Milky Way. It is speculated to…
AGC 226178 and NGVS 3543: Two deceptive dwarfs towards Virgo
Michael G. Jones, David J. Sand, Michele Bellazzini +21
The two sources AGC 226178 and NGVS 3543, an extremely faint, clumpy, blue stellar system and a low surface brightness dwarf spheroidal, are adjacent systems in the direction of th…
No Evidence for Intermediate-Mass Black Holes in Globular Clusters: Strong Constraints from the JVLA
Jay Strader, Laura Chomiuk, Thomas Maccarone +4
With a goal of searching for accreting intermediate-mass black holes (IMBHs), we report the results of ultra-deep Jansky VLA radio continuum observations of the cores of three Gala…
The Sloan Digital Sky Survey Reverberation Mapping Project: Technical Overview
Yue Shen, W. N. Brandt, Kyle S. Dawson +36
The Sloan Digital Sky Survey Reverberation Mapping project (SDSS-RM) is a dedicated multi-object RM experiment that has spectroscopically monitored a sample of 849 broad-line quasa…
The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) I. Ultraviolet to Infrared Photometry of 22 Million Stars in M33
Benjamin F. Williams, Meredith J. Durbin, Julianne J. Dalcanton +18
We present panchromatic resolved stellar photometry for 22 million stars in the Local Group dwarf spiral Triangulum (M33), derived from Hubble Space Telescope (HST) observations wi…
Circumnuclear Molecular Gas in Megamaser Disk Galaxies NGC 4388 and NGC 1194
Jenny E. Greene, Anil Seth, Mariya Lyubenova +3
We explore the warm molecular and ionized gas in the centers of two megamaser disk galaxies using K-band spectroscopy. Our ultimate goal is to determine how gas is funneled onto th…
Resolved nuclear kinematics link the formation and growth of nuclear star clusters with the evolution of their early and late-type hosts
Francesca Pinna, Nadine Neumayer, Anil Seth +7
We present parsec-scale kinematics of eleven nearby galactic nuclei, derived from adaptive-optics assisted integral-field spectroscopy at (near-infrared) CO band-head wavelengths.…
NGC 5128 globular cluster candidates out to 150 kpc: a comprehensive catalog from Gaia and ground based data
Allison K. Hughes, David J. Sand, Anil Seth +9
We present a new catalog of 40502 globular cluster (GC) candidates in NGC 5128 out to a projected radius of 150 kpc, based on data from the Panoramic Imaging Survey of Centau…
The M81 Group Dwarf Irregular Galaxy DDO 165. II. Connecting Recent Star Formation with ISM Structures and Kinematics
John M. Cannon, Hans P. Most, Evan D. Skillman +8
We compare the stellar populations and complex neutral gas dynamics of the M81 group dIrr galaxy DDO 165 using data from the HST and the VLA. Paper I identified two kinematically d…
Star Formation and Feedback in Smoothed Particle Hydrodynamic Simulations--I. Isolated Galaxies
Greg Stinson, Anil Seth, Neal Katz +3
We present an analysis of star formation and feedback recipes appropriate for galactic smoothed particle hydrodynamics simulations. Using an isolated Milky Way-like galaxy, we cons…
A 3.5-million Solar Masses Black Hole in the Centre of the Ultracompact Dwarf Galaxy Fornax UCD3
Anton V. Afanasiev, Igor V. Chilingarian, Steffen Mieske +16
The origin of ultracompact dwarfs (UCDs), a class of compact stellar systems discovered two decades ago, still remains a matter of debate. Recent discoveries of central supermassiv…
Using Megamaser Disks to Probe Black Hole Accretion
Jenny E. Greene, Anil Seth, Mark den Brok +7
We examine the alignment between H_2O megamaser disks on sub-pc scales with circumnuclear disks and bars on <500 pc scales observed with HST/WFC3. The HST imaging reveals young sta…
Composite Bulges -- II. Classical Bulges and Nuclear Discs in Barred Galaxies: The Contrasting Cases of NGC 4608 and NGC 4643
Peter Erwin, Anil Seth, Victor P. Debattista +14
We present detailed morphological, photometric, and stellar-kinematic analyses of the central regions of two massive, early-type barred galaxies with nearly identical large-scale m…
The Panchromatic Hubble Andromeda Treasury X. Ultraviolet to Infrared Photometry of 117 Million Equidistant Stars
Benjamin F. Williams, Dustin Lang, Julianne J. Dalcanton +16
We have measured stellar photometry with the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) and Advanced Camera for Surveys (ACS) in near ultraviolet (F275W, F336W), optic…
Panchromatic Hubble Andromeda Treasury IX: A Photometric Survey of Planetary Nebulae in M31
Mark J. Veyette, Benjamin F. Williams, Julianne J. Dalcanton +8
We search Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) and Wide Field Camera 3 (WFC3) broadband imaging data from the Panchromatic Hubble Andromeda Treasury (PHAT…
Detection of a Stellar Halo in NGC 4244
Anil Seth, Roelof De Jong, Julianne Dalcanton +1
We present the preliminary detection of a stellar halo in the nearby, edge-on galaxy, NGC 4244. Using data from the Hubble Space Telescope's Advanced Camera for Surveys (HST/ACS),…
Detection of a 100,000 M black hole in M31's most massive globular cluster: A tidally stripped nucleus
Renuka Pechetti, Anil Seth, Sebastian Kamann +6
We investigate the presence of a central black hole (BH) in B023-G078, M31's most massive globular cluster. We present high-resolution, adaptive-optics assisted, integral-field spe…
The Panchromatic Hubble Andromeda Treasury. Progression of Large-Scale Star Formation across Space and Time in M31
Dimitrios A. Gouliermis, Lori C. Beerman, Luciana Bianchi +11
We investigate the clustering of early-type stars younger than 300 Myr on galactic scales in M31. Based on the stellar photometric catalogs of the Panchromatic Hubble Andromeda Tre…
The M81 Group Dwarf Irregular Galaxy DDO 165. I. High Velocity Neutral Gas in a Post-Starburst System
John M. Cannon, Hans P. Most, Evan D. Skillman +8
We present new multi-configuration VLA HI spectral line observations of the M81 group dIrr post-starburst galaxy DDO 165. The HI morphology is complex, with multiple column density…
Composite Bulges -- III. A Study of Nuclear Star Clusters in Nearby Spiral Galaxies
Aishwarya Ashok, Anil Seth, Peter Erwin +17
We present photometric and morphological analyses of nuclear star clusters (NSCs) -- very dense, massive star clusters present in the central regions of most galaxies -- in a sampl…
Investigating the Scalability and Biological Plausibility of the Activation Relaxation Algorithm
Beren Millidge, Alexander Tschantz, Anil Seth +1
The recently proposed Activation Relaxation (AR) algorithm provides a simple and robust approach for approximating the backpropagation of error algorithm using only local learning…
The Chemodynamics of the Stellar Populations in M31 from APOGEE Integrated Light Spectroscopy
Benjamin J. Gibson, Gail Zasowski, Anil Seth +8
We present analysis of nearly 1,000 near-infrared, integrated light spectra from APOGEE in the inner 7 kpc of M31. We utilize full spectrum fitting with A-LIST simple stellar…
The Chandra View of NGC 4178: The Lowest Mass Black Hole in a Bulgeless Disk Galaxy?
Nathan Secrest, Shobita Satyapal, Mario Gliozzi +3
Using high resolution Chandra data, we report the presence of a weak X-ray point source coincident with the nucleus of NGC 4178, a late-type bulgeless disk galaxy known to have hig…
A Mathematical Walkthrough and Discussion of the Free Energy Principle
Beren Millidge, Anil Seth, Christopher L Buckley
The Free-Energy-Principle (FEP) is an influential and controversial theory which postulates a deep and powerful connection between the stochastic thermodynamics of self-organizatio…
Astro2020 Science White Paper: Black Holes Across Cosmic Time
Kayhan Gültekin, Aaron Barth, Karl Gebhardt +8
Supermassive black holes are located at the center of most, if not all, massive galaxies. They follow close correlations with global properties of their host galaxies (scaling rela…
Neural Kalman Filtering
Beren Millidge, Alexander Tschantz, Anil Seth +1
The Kalman filter is a fundamental filtering algorithm that fuses noisy sensory data, a previous state estimate, and a dynamics model to produce a principled estimate of the curren…
Water Masers as Tracers of Protostellar Disks and Outflows in the Intermediate Mass Star Forming Region NGC 2071
Anil Seth, Lincoln Greenhill, Benjamin Holder
We have mapped the water maser emission associated with the infrared centers IRS1 and IRS3 of the NGC 2071IR star forming region at four epochs over ~4 months with the Very Long Ba…
The black hole occupation fraction of local dwarf galaxies with AXIS
Elena Gallo, Edmund Hodges-Kluck, Tommaso Treu +7
The fraction of local dwarf galaxies that hosts massive black holes is arguably the cleanest diagnostic of the dominant seed formation mechanism of today's supermassive black holes…
The APOGEE Library of Infrared SSP Templates (A-LIST): High-Resolution Simple Stellar Population Spectral Models in the H-Band
Aishwarya Ashok, Gail Zasowski, Anil Seth +8
Integrated light spectroscopy from galaxies can be used to study the stellar populations that cannot be resolved into individual stars. This analysis relies on stellar population s…