272 citations · 1.8k across the 27 of their papers we have counts for
28 papers
Recovery of the low- and high-mass end slopes of the IMF in massive early-type galaxies using detailed elemental abundances
Mark den Brok, Davor Krajnović, Eric Emsellem +3
Star formation in the early Universe has left its imprint on the chemistry of observable stars in galaxies. We derive elemental abundances and the slope of the low-mass end of the…
On the robustness of triaxial Schwarzschild modelling: The effects of correcting the orbit mirroring
Sabine Thater, Prashin Jethwa, Behzad Tahmasebzadeh +13
In the past 15 years, the triaxial Schwarzschild orbit-superposition code by van den Bosch et al. (2008) has been widely applied to study the dynamics of galaxies. Recently, Quenne…
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…
Spatially Resolving the Star Formation Histories of Three Nearby Nuclear Star Clusters
Christian H. Hannah, Anil C. Seth, Dieu D. Nguyen +4
The formation of nuclear star clusters (NSCs) remains an open question. In this work, we use spatially resolved HST/STIS spectroscopic observations of three nearby NSCs (hosted by…
Abundance ratios in dwarf elliptical galaxies
Ş. Şen, R. F. Peletier, A. Boselli +14
We determine abundance ratios of 37 dwarf ellipticals (dEs) in the nearby Virgo cluster. This sample is representative of the early-type population of galaxies in the absolute magn…
Detection of Supermassive Black Holes in Two Virgo Ultracompact Dwarf Galaxies
Christopher P. Ahn, Anil C. Seth, Mark den Brok +13
We present the detection of supermassive black holes (BHs) in two Virgo ultracompact dwarf galaxies (UCDs), VUCD3 and M59cO. We use adaptive optics assisted data from the Gemini/NI…
Improved Dynamical Constraints on the Mass of the central Black Hole in NGC 404
Dieu D. Nguyen, Anil C. Seth, Mark den Brok +6
We explore the nucleus of the nearby 10~early-type galaxy (ETGs), NGC~404, using Hubble Space Telescope (HST)/STIS spectroscopy and WFC3 imaging. We first present evid…
MUSE Deep-Fields: The Lya Luminosity Function in the Hubble Deep Field South at 2.91 < z < 6.64
Alyssa B. Drake, Bruno Guiderdoni, Jeremy Blaizot +14
We present the first estimate of the Lyα luminosity function using blind spectroscopy from the Multi Unit Spectroscopic Explorer, MUSE, in the Hubble Deep Field South. Using automa…
Measuring the mass of the central black hole in the bulgeless galaxy NGC 4395 from gas dynamical modeling
Mark den Brok, Anil C. Seth, Aaron J. Barth +7
NGC 4395 is a bulgeless spiral galaxy, harboring one of the nearest known type 1 Seyfert nuclei. Although there is no consensus on the mass of its central engine, several estimates…
Nuclear star cluster formation in energy-space
N. W. C. Leigh, I. Y. Georgiev, T. Boeker +2
In a virialized stellar system, the mean-square velocity is a direct tracer of the energy per unit mass of the system. Here, we exploit this to estimate and compare root-mean-squar…
Stellar Kinematics and Structural Properties of Virgo Cluster Dwarf Early-Type Galaxies from the SMAKCED Project III. Rotation versus Pressure Support
E. Toloba, P. Guhathakurta, A. Boselli +17
We analyze the stellar kinematics of 39 dwarf early-type galaxies (dEs) in the Virgo cluster. Based on the specific stellar angular momentum lambda_e and the ellipticity, we find 1…
Stellar Kinematics and Structural Properties of Virgo Cluster Dwarf Early-Type Galaxies from the SMAKCED Project II. The Survey and a Systematic Analysis of Kinematic Anomalies and Asymmetries
E. Toloba, P. Guhathakurta, R. Peletier +15
We present spatially resolved kinematics and global stellar populations and mass-to-light ratios for a sample of 39 dwarf early-type (dE) galaxies in the Virgo cluster studied as p…
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…
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…
Extended Structure and Fate of the Nucleus in Henize 2-10
Dieu D. Nguyen, Anil C. Seth, Amy E. Reines +3
We investigate the structure and nuclear region of the black hole (BH) hosting galaxy Henize2-10. Surface brightness (SB) profiles are analyzed using Magellan/Megacam - and -…
Stellar Kinematics and Structural Properties of Virgo Cluster Dwarf Early-Type Galaxies from the SMAKCED Project. I. Kinematically Decoupled Cores and Implications for Infallen Groups in Clusters
E. Toloba, P. Guhathakurta, G. van de Ven +12
We present evidence for kinematically decoupled cores (KDCs) in two dwarf early-type (dE) galaxies in the Virgo cluster, VCC 1183 and VCC 1453, studied as part of the SMAKCED stell…
The central mass and mass-to-light profile of the Galactic globular cluster M15
Mark den Brok, Glenn van de Ven, Remco van den Bosch +1
We analyze line-of-sight velocity and proper motion data of stars in the Galactic globular cluster M15 using a new method to fit dynamical models to discrete kinematic data. Our fi…
The HST/ACS Coma Cluster Survey - VII. Structure and Assembly of Massive Galaxies in the Center of the Coma Cluster
Tim Weinzirl, Shardha Jogee, Eyal Neistein +16
We constrain the assembly history of galaxies in the projected central 0.5 Mpc of the Coma cluster by performing structural decomposition on 69 massive (M_star >= 10^9 M_sun) galax…
A near-infrared census of the multi-component stellar structure of early-type dwarf galaxies in the Virgo cluster
J. Janz, E. Laurikainen, T. Lisker +12
The fraction of star-forming to quiescent dwarf galaxies varies from almost infinity in the field to zero in the centers of rich galaxy clusters. What is causing this pronounced mo…
Discrete dynamical modelling of omega Centauri
Laura L. Watkins, Glenn van de Ven, Mark den Brok +1
We present a new framework for modelling discrete kinematic data. Current techniques typically involve binning. Our approach works directly with the discrete data and uses maximum-…
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…
The HST/ACS Coma Cluster Survey. VIII. Barred Disk Galaxies in the Core of the Coma Cluster
Irina Marinova, Shardha Jogee, Tim Weinzirl +16
(ABRIDGED) We use high resolution (~0.1") F814W ACS images from the HST ACS Treasury survey of the Coma cluster at z~0.02 to study bars in massive disk galaxies (S0s), and in dwarf…
Dissecting early-type dwarf galaxies into their multiple components
J. Janz, E. Laurikainen, T. Lisker +8
Early-type dwarf galaxies, once believed to be simple systems, have recently been shown to exhibit an intriguing diversity in structure and stellar content. To analyze this further…
The HST/ACS Coma Cluster Survey: VII - Colour Gradients in Giant and Dwarf Early-Type Galaxies
M. den Brok, R. F. Peletier, E. A. Valentyn +17
Using deep, high-spatial resolution imaging from the HST ACS Coma Cluster Treasury Survey, we determine colour profiles of early-type galaxies in the Coma cluster. From 176 galaxie…