129 citations · 1.8k across the 47 of their papers we have counts for
38 papers · 1 filter
The Complete Spitzer Survey of Stellar Structure in Galaxies (CSG)
P. M. Sánchez-Alarcón, H. Salo, J. H. Knapen +25
The Spitzer Survey of Stellar Structure in Galaxies (SG), together with its Early Type Galaxy (ETG) extension, stand as the most extensive dataset of deep, uniform mid-infrared…
Low-density star cluster formation: discovery of a young faint fuzzy on the outskirts of the low-mass spiral galaxy NGC 247
Aaron J. Romanowsky, Søren S. Larsen, Alexa Villaume +21
The classical globular clusters found in all galaxy types have half-light radii of 2-4 pc, which have been tied to formation in the dense cores of giant molecular…
Photometric properties of nuclear star clusters and their host galaxies in the Fornax cluster
Alan H. Su, Heikki Salo, Joachim Janz +2
We investigate the relations between nuclear star clusters (NSCs) and their host galaxies, and between the structural properties of nucleated and non-nucleated galaxies. We also ad…
Stellar masses, sizes, and radial profiles for 465 nearby early-type galaxies: an extension to the Spitzer Survey of Stellar Structure in Galaxies (SG)
A. E. Watkins, H. Salo, E. Laurikainen +16
The Spitzer Survey of Stellar Structure in Galaxies (SG) is a detailed study of over 2300 nearby galaxies in the near-infrared (NIR), which has been critical to our understan…
The Fornax Deep Survey (FDS) with VST XII: Low surface brightness dwarf galaxies in the Fornax cluster
Aku Venhola, Reynier F. Peletier, Heikki Salo +9
In this work we use Max-Tree Objects, (MTO) on the FDS data in order to detect previously undetected Low surface brightness (LSB) galaxies. After extending the existing Fornax dwar…
Ultra-compact dwarfs beyond the centre of the Fornax galaxy cluster: Hints of UCD formation in low-density environments
Teymoor Saifollahi, Joachim Janz, Reynier F. Peletier +6
Ultra-compact dwarf galaxies (UCDs) were serendipitously discovered by spectroscopic surveys in the Fornax cluster twenty years ago. Nowadays, it is commonly accepted that many bri…
Signatures of quenching in dwarf galaxies in local galaxy clusters
Joachim Janz, Heikki Salo, Alan H. Su +1
The transformation of late-type galaxies has been suggested as the origin of early-type dwarf galaxies in galaxy clusters. Venhola et al. analysed correlations between colour and s…
The Fornax Deep Survey (FDS) with the VST XI. The search for signs of preprocessing between the Fornax main cluster and Fornax A group
Alan H. Su, Heikki Salo, Joachim Janz +15
We investigate the structural properties of cluster and group galaxies by studying the Fornax main cluster and the infalling Fornax A group, exploring the effects of galaxy preproc…
On the accretion of a new group of galaxies onto Virgo: I. Internal kinematics of nine in-falling dEs
Bahar Bidaran, Anna Pasquali, Thorsten Lisker +12
Galaxy environment has been shown to play an important role in transforming late-type, star-forming galaxies to quiescent spheroids. This transformation is expected to be more seve…
On the origins of up-bending breaks in disk galaxies
Aaron E. Watkins, Jarkko Laine, Sébastien Comerón +2
Using SPITZER 3.6m imaging, we investigate the physical and data-driven origins of up-bending (Type III) disk breaks. We apply a robust new break-finding algorithm to 175 low-in…
A Catalog of Galaxies in the Direction of the Perseus Cluster
Carolin Wittmann, Ralf Kotulla, Thorsten Lisker +4
We present a catalog of 5437 morphologically classified sources in the direction of the Perseus galaxy cluster core, among them 496 early-type low-mass galaxy candidates. The catal…
The Fornax Deep Survey (FDS) with VST. VI. Optical properties of the dwarf galaxies in the Fornax cluster
Aku Venhola, Reynier Peletier, Eija Laurikainen +18
The Fornax Deep Survey Dwarf galaxy Catalog (FDSDC) includes 564 dwarf galaxies in the Fornax cluster and the in-falling Fornax A subgroup. We use the FDSDC galaxies for statistica…
On the varied origins of up-bending breaks in galaxy disks
Aaron E. Watkins, Jarkko Laine, Sébastien Comerón +2
Aims: Using a sample of 175 low-inclination galaxies from the SG, we investigate the origins of up-bending (Type III) breaks in the 3.6 m surface brightness profiles of di…
The Fornax Deep Survey (FDS) with the VST: IV. A size and magnitude limited catalog of dwarf galaxies in the area of the Fornax cluster
Aku Venhola, Reynier Peletier, Eija Laurikainen +20
The Fornax Deep Survey (FDS), an imaging survey in the u', g', r', and i'-bands, has a supreme resolution and image depth compared to the previous spatially complete Fornax Cluster…
The Active Assembly of the Virgo Cluster: Indications for Recent Group Infall From Early-Type Dwarf Galaxies
Thorsten Lisker, Rukmani Vijayaraghavan, Joachim Janz +3
Virgo is a dynamically young galaxy cluster with substructure in its spatial and kinematic distribution. Here, we simultaneously study the phase-space distribution and the main cha…
Barlenses in the CALIFA survey: combining the photometric and stellar population analysis
E. Laurikainen, H. Salo, J. Laine +1
We investigate barlenses in the Calar Alto Legacy Integral Field Area (CALIFA) survey galaxies, studying their morphologies, stellar populations and metallicities. Multi-component…
On the formation mechanisms of compact elliptical galaxies
Anna Ferre-Mateu, Duncan A. Forbes, Aaron J. Romanowsky +2
In order to investigate the formation mechanisms of the rare compact elliptical galaxies (cE) we have compiled a sample of 25 cEs with good SDSS spectra, covering a range of stella…
Young, metal-enriched cores in early-type dwarf galaxies in the Virgo cluster based on colour gradients
Linda Urich, Thorsten Lisker, Joachim Janz +11
Early-type dwarf galaxies are not simply featureless, old objects, but were found to be much more diverse, hosting substructures and a variety of stellar population properties. To…
A population of faint low surface brightness galaxies in the Perseus cluster core
Carolin Wittmann, Thorsten Lisker, Liyualem Ambachew Tilahun +7
We present the detection of 89 low surface brightness (LSB), and thus low stellar density galaxy candidates in the Perseus cluster core, of the kind named "ultra-diffuse galaxies",…
The hELENa project - I. Stellar populations of early-type galaxies linked with local environment and galaxy mass
Agnieszka Sybilska, Thorsten Lisker, Harald Kuntschner +6
We present the first in a series of papers in Te role of nvironment in shaping ow-mass arly-type earby glaxies (hELENa) project. In this paper we combine our samp…
Implications for the origin of dwarf early-type galaxies: a detailed look at the isolated rotating dwarf early-type galaxy CG 611, with ramifications for the Fundamental Plane's (S_K)^2 kinematic scaling and the spin-ellipticity diagram
Alister W. Graham, Joachim Janz, Samantha J. Penny +4
Selected from a sample of nine, isolated, dwarf early-type galaxies (ETGs) having the same range of kinematic properties as dwarf ETGs in clusters, we use CG 611 (LEDA 2108986) to…
Implications for the origin of early-type dwarf galaxies --- the discovery of rotation in isolated, low-mass early-type galaxies
Joachim Janz, Samantha J. Penny, Alister W. Graham +2
We present the discovery of rotation in quenched, low-mass early-type galaxies that are isolated. This finding challenges the claim that (all) rotating dwarf early-type galaxies in…
The SLUGGS Survey: Dark matter fractions at large radii and assembly epochs of early-type galaxies from globular cluster kinematics
Adebusola B. Alabi, Duncan A. Forbes, Aaron J. Romanowsky +7
We use globular cluster kinematics data, primarily from the SLUGGS survey, to measure the dark matter fraction () and the average dark matter density ($\left< ρ_{\rm DM…
Another look at the size of the low-surface brightness galaxy VCC 1661 in the Virgo Cluster
Andreas Koch, Christine S. Black, R. Michael Rich +3
We present new wide-field images of the low-surface brightness Virgo Cluster dwarf galaxy VCC 1661. The extant literature lists a broad range of radii for this object, covering a f…