activity
20122026
most citedDeep near-infrared spectroscopy of passively evolving galaxies at z>1.4

157 citations · 249 across the 25 of their papers we have counts for

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Showing astro-ph.GAShow all

16 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

Supermassive black holes in six triaxial galaxies: Insights from SINFONI and MUSE observations

Sabine Thater, Avinash Chaturvedi, Davor Krajnovic +5

Dynamical modelling can be used to constrain the masses of central black holes; however, modelling massive galaxies is challenging due to their complexity. In this work, we report…

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

WISDOM Project -- XXVIII. Molecular gas measurement of the supermassive black hole mass of the galaxy NGC 1387

Pandora Dominiak, Martin Bureau, Fu-Heng Liang +6

Supermassive black hole (SMBH) masses can be measured using molecular gas kinematics. Here we present high angular resolution ( arcsec or pc) Atacama Large Millim…

astro-ph.GA2026

A general spectral solver for the axisymmetric Jeans equations: fast dynamical modelling of galaxies with arbitrary anisotropy

Michele Cappellari

Axisymmetric Jeans modelling is widely used to infer galaxy mass profiles from integral-field kinematics, but existing implementations maintain tractability by adopting highly rest…

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.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★ 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★ 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

TDCOSMO XXII: Triaxiality and projection effects in time-delay cosmography

Xiang-Yu Huang, Simon Birrer, Michele Cappellari +3

Constraining the mass-sheet degeneracy (MSD) is crucial for improving the precision and accuracy of time-delay cosmography. Joint analyses of lensing and stellar kinematics are wid…

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★ 7 cited

Universal bimodality in kinematic morphology and the divergent pathways to galaxy quenching

Bitao Wang, Yingjie Peng, Michele Cappellari

The hierarchical structure formation of our Universe inherently involves violent and chaotic episodes of mass assembly such as galaxy mergers. The level of bulk rotation of the col…

astro-ph.GA2024★ 5 cited

On the kinematic nature of apparent discs at high redshifts: Local counterparts are not dominated by ordered rotation but by tangentially anisotropic random motion

Bitao Wang, Yingjie Peng, Michele Cappellari +2

It is not straightforward to physically interpret the apparent morphology of galaxies. Recent observations by James Webb Space Telescope (JWST) revealed a dominant galaxy populatio…

astro-ph.GA2024★ 13 cited

Project Dinos II: Redshift evolution of dark and luminous matter density profiles in strong-lensing elliptical galaxies across 0.1 < z < 0.9

William Sheu, Anowar J. Shajib, Tommaso Treu +5

We present a new measurement of the dark and luminous matter distribution of massive elliptical galaxies, and their evolution with redshift, by combining strong lensing and dynamic…