189 citations · 1.1k across the 23 of their papers we have counts for
23 papers
The WAGGS project - II. The reliability of the calcium triplet as a metallicity indicator in integrated stellar light
Christopher Usher, Thomas Beckwith, Sabine Bellstedt +12
Using data from the WiFeS Atlas of Galactic Globular cluster Spectra we study the behaviour of the calcium triplet (CaT), a popular metallicity indicator in extragalactic stellar p…
Evidence of a Bottom-heavy Initial Mass Function in Massive Early-type Galaxies from Near-infrared Metal Lines
David J. Lagattuta, Jeremy R. Mould, Duncan A. Forbes +3
We present new evidence for a variable stellar initial mass function (IMF) in massive early-type galaxies, using high-resolution, near-infrared spectroscopy from the Folded-port In…
The WAGGS project - I. The WiFeS Atlas of Galactic Globular cluster Spectra
Christopher Usher, Nicola Pastorello, Sabine Bellstedt +9
We present the WiFeS Atlas of Galactic Globular cluster Spectra, a library of integrated spectra of Milky Way and Local Group globular clusters. We used the WiFeS integral field sp…
The SLUGGS survey: Using extended stellar kinematics to disentangle the formation histories of low mass S0 galaxies
Sabine Bellstedt, Duncan A. Forbes, Caroline Foster +5
We utilise the DEIMOS instrument on the Keck telescope to measure the wide-field stellar kinematics of early-type galaxies as part of the SAGES Legacy Unifying Globulars and Galaxi…
The SLUGGS Survey: a catalog of over 4000 globular cluster radial velocities in 27 nearby early-type galaxies
Duncan A. Forbes, Adebusola Alabi, Jean P. Brodie +10
Here we present positions and radial velocities for over 4000 globular clusters (GCs) in 27 nearby early-type galaxies from the SLUGGS survey. The SLUGGS survey is designed to be r…
The SLUGGS survey: a new mask design to reconstruct the stellar populations and kinematics of both inner and outer galaxy regions
Nicola Pastorello, Duncan A. Forbes, Adriano Poci +7
Integral field unit spectrographs allow the 2D exploration of the kinematics and stellar populations of galaxies, although they are generally restricted to small fields-of-view. Us…
The SLUGGS Survey: The mass distribution in early-type galaxies within five effective radii and beyond
Adebusola B. Alabi, Duncan A. Forbes, Aaron J. Romanowsky +11
We study mass distributions within and beyond 5~effective radii () in 23 early-type galaxies from the SLUGGS survey, using their globular cluster (GC) kinematic data. Th…
The SLUGGS Survey: The Assembly Histories of Individual Early-type Galaxies
Duncan A. Forbes, Aaron J. Romanowsky, Nicola Pastorello +5
Early-type (E and S0) galaxies may have assembled via a variety of different evolutionary pathways. Here we investigate these pathways by comparing the stellar kinematic properties…
The SLUGGS Survey: stellar kinematics, kinemetry and trends at large radii in 25 early-type galaxies
Caroline Foster, Nicola Pastorello, Joel Roediger +9
Due to longer dynamical timescales, the outskirts of early-type galaxies retain the footprint of their formation and assembly. Under the popular two-phase galaxy formation scenario…
The young nuclear stellar disc in the SB0 galaxy NGC 1023
E. M. Corsini, L. Morelli, N. Pastorello +3
Small kinematically-decoupled stellar discs with scalelengths of a few tens of parsec are known to reside in the centre of galaxies. Different mechanisms have been proposed to expl…
The SLUGGS Survey: Globular cluster kinematics in a "double sigma" galaxy - NGC 4473
Adebusola B. Alabi, Caroline Foster, Duncan A. Forbes +6
NGC 4473 is a so--called double sigma (2) galaxy, i.e. a galaxy with rare, double peaks in its 2D stellar velocity dispersion. Here, we present the globular cluster (GC) kinemat…
The SLUGGS survey: inferring the formation epochs of metal-poor and metal-rich globular clusters
Duncan A. Forbes, Nicola Pastorello, Aaron J. Romanowsky +3
We present a novel, observationally-based framework for the formation epochs and sites of globular clusters (GCs) in a cosmological context. Measuring directly the mean ages of the…
The SLUGGS survey: Combining stellar and globular cluster metallicities in the outer regions of early-type galaxies
Nicola Pastorello, Duncan A. Forbes, Christopher Usher +9
The outer halo regions of early-type galaxies carry key information about their past accretion history. However, spectroscopically probing the stellar component at such galactocent…
Small scatter and nearly-isothermal mass profiles to four half-light radii from two-dimensional stellar dynamics of early-type galaxies
Michele Cappellari, Aaron J. Romanowsky, Jean P. Brodie +9
We study the total mass-density profile for a sample of 14 fast-rotator early-type galaxies (stellar masses ). We combine observations from the SLUGG…
A SLUGGS and Gemini/GMOS combined study of the elliptical galaxy M60: wide-field photometry and kinematics of the globular cluster system
Vincenzo Pota, Jean P. Brodie, Terry Bridges +20
We present new wide-field photometry and spectroscopy of the globular clusters (GCs) around NGC 4649 (M60), the third brightest galaxy in the Virgo cluster. Imaging of NGC 4649 was…
The SLUGGS survey: Globular cluster stellar population trends from weak absorption lines in stacked spectra
Christopher Usher, Duncan A. Forbes, Jean P. Brodie +7
As part of the SLUGGS survey, we stack 1137 Keck DEIMOS spectra of globular clusters from 10 galaxies to study their stellar populations in detail. The stacked spectra have median…
The SLUGGS survey: Exploring the metallicity gradients of nearby early-type galaxies to large radii
Nicola Pastorello, Duncan A. Forbes, Caroline Foster +5
Stellar metallicity gradients in the outer regions of galaxies are a critical tool for disentangling the contributions of in-situ and ex-situ formed stars. In the two-phase galaxy…
The SAGES Legacy Unifying Globulars and GalaxieS Survey (SLUGGS): Sample definition, methods, and initial results
Jean P. Brodie, Aaron J. Romanowsky, Jay Strader +14
We introduce and provide the scientific motivation for a wide-field photometric and spectroscopic chemodynamical survey of nearby early-type galaxies (ETGs) and their globular clus…
The SLUGGS Survey: Wide-field Stellar Kinematics of Early-type Galaxies
Jacob A. Arnold, Aaron J. Romanowsky, Jean P. Brodie +10
We present stellar kinematics of 22 nearby early-type galaxies (ETGs), based on two-dimensional (2D) absorption line stellar spectroscopy out to ~2-4 R_e (effective radii), as part…
The SLUGGS Survey: outer triaxiality of the Fast Rotator elliptical NGC 4473
Caroline Foster, Jacob A. Arnold, Duncan A. Forbes +5
Systematic surveys of nearby early type galaxies (ETGs) using integral field unit spectrograph (IFU) data have revealed that galaxies can hide interesting structures only visible t…
The Planetary Nebulae Population in the Nuclear Regions of M31: the SAURON view
Nicola Pastorello, Marc Sarzi, Michele Cappellari +5
Following a first study of the central regions of M32 that illustrated the power of integral-field spectroscopy (IFS) in detecting and measuring the [O III]λ5007 emission of PNe ag…
Polar bulges and polar nuclear discs: the case of NGC 4698
E. M. Corsini, J. Méndez-Abreu, N. Pastorello +5
The early-type spiral NGC 4698 is known to host a nuclear disc of gas and stars which is rotating perpendicularly with respect to the galaxy main disc. In addition, the bulge and m…
The Planetary Nebulae Population in the Central Regions of M32: the SAURON view
Marc Sarzi, Gary Mamon, Michele Cappellari +4
Extragalactic Planetary Nebulae (PNe) are not only useful as distance signposts or as tracers of the dark-matter content of their host galaxies, but constitute also good indicators…