activity
20022026
most citedTDCOSMO IV: Hierarchical time-delay cosmography -- joint inference of the Hubble constant and galaxy density profiles

373 citations · 1.7k across the 52 of their papers we have counts for

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24 papers · 1 filter

astro-ph.GA2026

TDCOSMO XXX: Spatially resolved kinematics of the deflectors in time-delay lens systems B1608+656 and SDSSJ1206+4332 from JWST-NIRSpec observation

Pritom Mozumdar, Shawn Knabel, Anowar J. Shajib +3

We present spatially resolved stellar kinematics of the deflector galaxies in two time-delay lens systems, B1608+656 and SDSS J1206+4332, measured from JWST NIRSpec integral field…

astro-ph.GA2026

Constraining the Physical Properties of Quadruply Lensed Quasars using Optical-to-X-Ray Data

Kriti Kamal Gupta, Dominique Sluse, Maarten Baes +5

Gravitational lensing of luminous active galactic nuclei (AGN; or quasars) can be used as a natural telescope to zoom in on their inner structures. With more and more lensed AGN be…

astro-ph.GA2026

First measurement of narrow-line flux ratios for a lensed quasar with JWST/NIRSpec IFS

Hadrien Paugnat, Tommaso Treu, Anna M. Nierenberg +3

Strong gravitational lensing is a powerful probe of dark matter (DM) structure on subgalactic scales: in particular, statistics of flux-ratio anomalies (discrepancies between mass…

astro-ph.GA2026

Spatially Resolved Nebular-Stellar Reddening with JWST/NIRISS

Peter J. Watson, Benedetta Vulcani, Tommaso Treu +7

An accurate determination of the dust attenuation within galaxies is essential to derive key physical properties such as the star formation rate (SFR). We present an analysis using…

astro-ph.GA2026

Early Results from GLASS-JWST. XXVI. Spatially Resolved Star Formation and Balmer Decrements at from NIRISS Slitless Spectroscopy

Pengfei Ren, Xin Wang, Yuxuan Pang +10

Using JWST/NIRISS slitless spectroscopy, we present spatially resolved Balmer decrement measurements for 79 galaxies at , which are gravitationally lensed by the for…

astro-ph.GA2026★ 2 cited

Revisiting the mass metallicity relation and the fundamental metallicity relation of dwarf galaxies at cosmic noon with NIRISS

Xianlong He, Zihao Li, Xin Wang +6

We extend the stellar-mass gas-phase metallicity relation (MZR) at down to the extremely low-mass regime using 183 galaxies with , based…

astro-ph.GA2026

Can BLR line profile shape improve single-epoch black hole mass estimates?

Lizvette Villafaña, Tommaso Treu, Shu Wang +7

The virial coefficient (), which is meant to encapsulate broad-line region (BLR) geometry and kinematics, remains one of the largest sources of systematic uncertainty in black h…

astro-ph.GA2026

Dynamical Modeling of the Broad-Line Region with High-Mass Active Galactic Nuclei and Constraints on the Virial Factor

Shu Wang, Jong-Hak Woo, Lizvette Villafaña +2

We present the results of broad-line region (BLR) dynamical modeling for eight high-mass active galactic nuclei (AGNs) from the Seoul National University AGN Monitoring Project, by…

astro-ph.GA2026

Spatially Resolved Kinematics of SLACS Lens Galaxies. II: Breaking Degeneracies with Lensing and Dynamical Models

Shawn Knabel, Tommaso Treu, Michele Cappellari +4

We model the dynamical mass density profiles of 14 strong gravitational lens galaxies from the Sloan Lens ACS (SLACS) sample using spatially resolved kinematics obtained from Keck…

astro-ph.GA2026

BEACON: JWST NIRCam Pure-parallel Imaging Survey. III. Constraints on the UV LF and the Clustering of z~7-14 Galaxies

Kimi C. Kreilgaard, Charlotte A. Mason, Takahiro Morishita +21

The James Webb Space Telescope (JWST) has extended the frontier of galaxy detection to redshifts z>11, finding a high abundance of UV-bright sources that challenge theoretical mode…

astro-ph.GA2026

Revisiting the Claim for a Direct-Collapse Black Hole in UHZ1 at

Fan Zou, Elena Gallo, Zihao Zuo +8

We reassess the direct collapse black hole (DCBH) interpretation of UHZ1 (UNCOVER-26185), a gravitationally lensed galaxy at . That interpretation rests on…

astro-ph.GA2026

MAGNUS III: Mild evolution of the total density slope in massive early-type galaxies since z1 from dynamical modeling of MUSE integral-field stellar kinematics

Pritom Mozumdar, Michele Cappellari, Christopher D. Fassnacht +1

We investigate the total mass density slope evolution in massive early-type galaxies (ETGs) over the last 6.5 billion years (). We perform a detailed dynamical analys…

astro-ph.GA2026★ 3 cited

The Host Galaxies of Active Galactic Nuclei with Direct Black Hole Mass Measurements

Vardha N. Bennert, Nico Winkel, Tommaso Treu +13

Reverberation mapping (RM) determines the mass of black holes (BH) in active galactic nuclei (AGNs) by resolving the BH gravitational sphere of influence in the time domain. Recent…

astro-ph.GA2025★ 4 cited

TDCOSMO. XXIII. Measurement of the Hubble constant from the doubly lensed quasar HE1104-1805

Eric Paic, Frédéric Courbin, Christopher D. Fassnacht +18

Time-delay cosmography leverages strongly lensed quasars to measure the Universe's current expansion rate, H_0, independently from other methods. While the latest TDCOSMO results r…

astro-ph.GA2025

HST Confirms Sub-5 kpc Dual Quasar Pairs at Cosmic Noon

Qian Wang, Xuheng Ding, John Silverman +12

During cosmic noon (), when both star formation and black hole growth peaked, galaxy mergers are predicted to trigger dual active galactic nuclei (AGN) that eventually co…

astro-ph.GA2025★ 1 cited

MAGNUS II: Rotational support of massive early-type galaxies decreased over the past 7 billion years

Pritom Mozumdar, Michele Cappellari, Christopher D. Fassnacht +1

Understanding how the internal kinematics of massive galaxies evolve is key to constraining the physical processes that drive their assembly. We investigate the evolution of rotati…

astro-ph.GA2025

MAGNUS I: A MUSE-DEEP Sample of Early-type Galaxies at Intermediate Redshift

Pritom Mozumdar, Michele Cappellari, Christopher D. Fassnacht +1

We present a sample of 213 early-type galaxies (ETGs) at redshifts . We combine deep integral-field spectroscopy from the MUSE-DEEP survey with high-resolution HST…

astro-ph.GA2025★ 3 cited

The BoRG- Survey: Analogs at to the UV-luminous Galaxy Population at

Sofía Rojas-Ruiz, Guido Roberts-Borsani, Takahiro Morishita +7

The population of bright galaxies at discovered by JWST, including the so-called "blue monsters", has been difficult to reconcile with standard galaxy evolution models…

astro-ph.GA2025★ 4 cited

TDCOSMO XXIV. First spatially resolved kinematics of the lens galaxy obtained using JWST-NIRSpec to improve time-delay cosmography

Anowar J. Shajib, Tommaso Treu, Sherry H. Suyu +15

Spatially resolved stellar kinematics has become a key ingredient in time-delay cosmography to break the mass-sheet degeneracy in the mass profile and in turn provide a precise con…

astro-ph.GA2025

TDCOSMO XXI. Accurate stellar velocity dispersions of the SL2S lens sample and the fundamental plane of the lensing mass

Pritom Mozumdar, Shawn Knabel, Tommaso Treu +4

We reanalyzed spectra that were taken as part of the SL2S lens galaxy survey with the goal to obtain the stellar velocity dispersion with a precision and accuracy sufficient for ti…

astro-ph.GA2025★ 11 cited

TDCOSMO XIX. Measuring stellar velocity dispersion with sub-percent accuracy for cosmography

Shawn Knabel, Pritom Mozumdar, Anowar J. Shajib +4

The stellar velocity dispersion () of massive elliptical galaxies is a key ingredient in breaking the mass-sheet degeneracy and obtaining precise and accurate cosmography from g…

astro-ph.GA2024

Combining Direct Black Hole Mass Measurements and Spatially Resolved Stellar Kinematics to Calibrate the - Relation of Active Galaxies

Nico Winkel, Vardha N. Bennert, Raymond P. Remigio +8

The origin of the tight scaling relation between the mass of supermassive black holes (SMBHs; ) and their host-galaxy properties remains unclear. Active galactic nuclei…

astro-ph.GA2020★ 24 cited

H0LiCOW XI. A weak lensing measurement of the external convergence in the field of the lensed quasar B1608+656 using HST and Subaru deep imaging

O. Tihhonova, F. Courbin, D. Harvey +11

We investigate the environment and line of sight of the H0LiCOW lens B1608+656 using Subaru Suprime-Cam and the Hubble Space Telescope (HST) to perform a weak lensing analysis. We…

astro-ph.GA2018★ 29 cited

The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign. II. New quasar lenses from double component fitting

T. Anguita, P. L. Schechter, N. Kuropatkin +56

We report upon the follow up of 34 candidate lensed quasars found in the Dark Energy Survey using NTT-EFOSC, Magellan-IMACS, KECK-ESI and SOAR-SAMI. These candidates were selected…