Publications (133)
Extragalactic planetary nebulae as mass tracers: biases in the estimate of dynamical quantities
M. Arnaboldi, N. Napolitano, M. Capaccioli
Planetary Nebulae (PNe) are very important kinematical tracers of the outer regions of early-type galaxies, where the integrated light techniques fail. Under ad hoc assumptions, th…
Tracing the Star Stream Through M31 Using Planetary Nebula Kinematics
H. R. Merrett, K. Kuijken, M. R. Merrifield +12
We present a possible orbit for the Southern Stream of stars in M31, which connects it to the Northern Spur. Support for this model comes from the dynamics of planetary nebulae (PN…
Shapley Optical Survey. I: Luminosity Functions in the Supercluster Environment
A. Mercurio, P. Merluzzi, C. P. Haines +6
We present the Shapley Optical Survey, a photometric study covering a 2 deg^2 region of the Shapley Supercluster core at z ~ 0.05 in two bands (B and R). The galaxy sample is compl…
Galaxy dynamics with the Planetary Nebula Spectrograph
N. R. Napolitano, A. J. Romanowsky, N. G. Douglas +6
The Planetary Nebula Spectrograph is a dedicated instrument for measuring radial velocity of individual Planetary Nebulae (PNe) in galaxies. This new instrument is providing crucia…
Early-type Galaxy Halo Dynamics inferred using the PN Spectrograph
N. G. Douglas, A. J. Romanowsky, K. Kuijken +6
A new instrument is providing crucial data with which to probe the structure of dark halos in elliptical galaxies.
Further spectroscopic observations of the CSL-1 object
M. Sazhin, M. Capaccioli, G. Longo +2
CSL-1 is a peculiar object (R.A._{2000}= 12h 23m 30.5"; Dec_{2000}= -12deg 38' 57.0") which, for its photometric and spectroscopic properties, is possibly the first case of gravita…
New Optical and Near-Infrared Surface Brightness Fluctuations Models. II. Young and Intermediate Age Stellar Populations
G. Raimondo, E. Brocato, M. Cantiello +1
We present theoretical surface-brightness fluctuations (SBF) amplitudes for single-burst stellar populations of young and intermediate age (), and $Z=0.00…
Discovery of 9 Ly alpha emitters at redshift z~3.1 using narrow-band imaging and VLT spectroscopy
R. P. Kudritzki, R. H. Mendez, J. J. Feldmeier +7
Narrow-band imaging surveys aimed at detecting the faint emission from the 5007 [O III] line of intracluster planetary nebulae in Virgo also probe high redshift z=3.1 Ly alpha emit…
Stellar mass-to-light ratio gradients in galaxies: correlations with mass
C. Tortora, N. R. Napolitano, A. J. Romanowsky +3
We analyze the stellar mass-to-light ratio (M/L) gradients in a large sample of local galaxies taken from the Sloan Digital Sky Survey, spanning a wide range of stellar masses and…
Planetary Nebula Spectrograph survey of S0 galaxy kinematics. II. Clues to the origins of S0 galaxies
A. Cortesi, M. R. Merrifield, L. Coccato +11
The stellar kinematics of the spheroids and discs of S0 galaxies contain clues to their formation histories. Unfortunately, it is difficult to disentangle the two components and to…
Mass-to-light ratio gradients in early-type galaxy haloes
N. R. Napolitano, M. Capaccioli, A. J. Romanowsky +6
Since the near future should see a rapidly expanding set of probes of the halo masses of individual early-type galaxies, we introduce a convenient parameter for characterising the…
On the Invariant Distribution of Galaxies in the re--mie plane out to z = 0.64
F. La Barbera, G. Busarello, P. Merluzzi +2
We study the evolution of the relation between half-light (effective) radius, r_e, and mean surface brightness, mi_e, known as Kormendy relation, out to redshift z=0.64 in V-band r…
The true nature of CSL-1
M. V. Sazhin, M. Capaccioli, G. Longo +5
On January 12 2006, the Hubble Space Telescope observed the peculiar double extragalactic object CSL-1, suspected to be the result of gravitational lensing by a cosmic string. The…
Early type galaxies and structural parameters from ESO public survey KiDS
N. Roy, N. R. Napolitano, F. La Barbera +5
The Kilo Degree survey (KiDS) is a large-scale optical imaging survey carried out with the VLT Survey Telescope (VST), which is the ideal tool for galaxy evolution studies. We expe…
Color Gradients in Early-type Galaxies: Dependence on Environment and Redshift
F. La Barbera, R. R. de Carvalho, R. Gal +4
Color gradients in early-type galaxies contain valuable clues about their formation and evolutionary histories and mechanisms. We examine color gradients in 1,700 early-type galaxi…
New optical and near-infrared Surface Brightness Fluctuations models. A primary distance indicator ranging from Globular Clusters to distant galaxies?
M. Cantiello, G. Raimondo, E. Brocato +1
We present new theoretical models for Surface Brightness Fluctuations (SBF) both for optical and near-infrared bands in standard ground-based and Hubble Space Telescope filter syst…
Extending the Hubble diagram by gamma ray bursts
L. Izzo, S. Capozziello, G. Covone +1
A new method to constrain the cosmological equation of state is proposed by using combined samples of gamma-ray bursts (GRBs) and supernovae (SNeIa). The Chevallier-Polarski-Linder…
The Planetary Nebulae Spectrograph: the green light for Galaxy Kinematics
N. G. Douglas, M. Arnaboldi, K. C. Freeman +10
Planetary nebulae are now well established as probes of galaxy dynamics and as standard candles in distance determinations. Motivated by the need to improve the efficiency of plane…
Optical and Near-Infrared Structural Properties of Cluster Galaxies at
F. La Barbera, G. Busarello, P. Merluzzi +2
Structural parameters (half-light radius , mean effective surface brightness , and Sersic index n) are derived for a sample of galaxies in the rich cluster AC 118 at z…
The VST Early-type GAlaxy Survey (VEGAS) data release 1
E. Iodice, M. Spavone, M. A. Raj +3
We present the first data release (DR1) of the VST Early-type GAlaxy Survey (VEGAS). This is a deep multi-band (u'g'r'i') imaging survey, carried out with the ESO VLT Survey Telesc…
VST - VLT Survey Telescope Integration Status
C. Belfiore, M. Brescia, M. Capaccioli +20
The VLT Survey Telescope (VST) is a 2.6m aperture, wide field, UV to I facility, to be installed at the European Southern Observatory (ESO) on the Cerro Paranal Chile. VST was prim…
Stellar kinematics for the central spheroid in the Polar Disk Galaxy NGC4650A
E. Iodice, M. Arnaboldi, R. P. Saglia +7
We have obtained high angular resolution, high signal-to-noise spectra of the Calcium triplet absorption lines on the photometric axes of the stellar spheroid in the polar disk gal…
Color and stellar population gradients in galaxies. Correlation with mass
C. Tortora, N. R. Napolitano, V. F. Cardone +3
We analyze the color gradients (CGs) of ~50000 nearby SDSS galaxies. From synthetic spectral models based on a simplified star formation recipe, we derive the mean spectral propert…
VST processing facility: first astronomical applications
A. Grado, M. Capaccioli, L. Limatola +1
VST--Tube is a new software package designed to process optical astronomical images. It is an automated pipeline to go from the raw exposures to fully calibrated co-added images, a…
The Capodimonte Deep Field I - Presentation of the survey and first follow-up studies
J. M. Alcalá, M. Pannella, E. Puddu +16
We present the Capodimonte Deep Field (OACDF), a deep field covering an area of 0.5 square degrees in the B, V, R optical bands plus six medium-band filters in the wavelength range…
The VOICE Survey : VST Optical Imaging of the CDFS and ES1 Fields
M. Vaccari, G. Covone, M. Radovich +15
We present the VST Optical Imaging of the CDFS and ES1 Fields (VOICE) Survey, a VST INAF Guaranteed Time program designed to provide optical coverage of two 4 deg cosmic window…
Mass-to-light ratios in early-type galaxies and the dark matter content
M. Capaccioli, N. R. Napolitano, M. Arnaboldi
The distribution of the radial trends of the mass-to-light ratios (M/L) within an assorted sample of early-type galaxies is discussed. Three classes of galaxies are identified acco…
The Fornax Deep Survey (FDS) with the VST: III. Low Surface Brightness (LSB) dwarfs and Ultra Diffuse Galaxies (UDGs) in the center of the Fornax cluster
A. Venhola, R. Peletier, E. Laurikainen +16
Studies of low surface brightness (LSB) galaxies in nearby clusters have revealed a sub-population of extremely diffuse galaxies with central surface brightness > 24 ma…
The relative distances to the Virgo, Fornax, and Coma clusters of galaxies through the Dn-sigma and the Fundamental Plane relations
M. D'Onofrio, M. Capaccioli, S. Zaggia +1
We derive the relative distances to the Virgo, Fornax, and Coma clusters of galaxies by applying the Dn-sigma and the Fundamental Plane (FP) relations to the data of the homogeneou…
A new search for variability-selected active galaxies within the VST SUDARE-VOICE survey: the Chandra Deep Field South and the SERVS-SWIRE area
S. Falocco, D. De Cicco, M. Paolillo +19
This work makes use of the VST observations to select variable sources. We use also the IR photometry, SED fitting and X-ray information where available to confirm the nature of th…
Intracluster Planetary Nebulae in the Virgo Cluster
K. C. Freeman, M. Arnaboldi, M. Capaccioli +8
We briefly describe the properties of the confirmed spectroscopic sample of intracluster planetary nebulae recently discovered in the Virgo cluster. We find 23 bonafide intracluste…
Variability-selected Active Galactic Nuclei in the VST-SUDARE/VOICE Survey of the COSMOS Field
D. De Cicco, M. Paolillo, G. Covone +16
Optical variability has proven to be an effective way of detecting AGNs in imaging surveys, lasting from weeks to years. In the present work we test its use as a tool to identify A…
Supernova rates from the SUDARE VST-Omegacam search II. Rates in a galaxy sample
M. T. Botticella, E. Cappellaro, L. Greggio +24
This is the second paper of a series in which we present measurements of the Supernova (SN) rates from the SUDARE survey. In this paper, we study the trend of the SN rates with the…
Supplement: Localization and broadband follow-up of the gravitational-wave transient GW150914
B. P. Abbott, R. Abbott, T. D. Abbott +1538
This Supplement provides supporting material for arXiv:1602.08492 . We briefly summarize past electromagnetic (EM) follow-up efforts as well as the organization and policy of the c…
Intracluster stellar population properties from N-body cosmological simulations -- I. Constraints at
N. R. Napolitano, M. Pannella, M. Arnaboldi +8
We use a high resolution collisionless simulation of a Virgo--like cluster in a CDM cosmology to determine the velocity and clustering properties of the diffuse stellar compone…
The Stellar Distribution of the Globular Cluster M55
S. Zaggia, G. Piotto, M. Capaccioli
We have used extensive V, I photometry (down to V=20.9) of 33615 stars in the direction of the globular cluster M55 to study the dynamical interaction of this cluster with the tida…
Shapley Optical Survey II: The effect of environment on the colour-magnitude relation and galaxy colours
C. P. Haines, P. Merluzzi, A. Mercurio +5
We present an analysis of the effects of environment on the photometric properties of galaxies in the core of the Shapley Supercluster at z=0.05, one of the most massive structures…
The Fornax Cluster VLT Spectroscopic Survey. I - VIMOS spectroscopy of compact stellar systems in the Fornax core region
V. Pota, N. R. Napolitano, M. Hilker +21
We present the results of a wide spectroscopic survey aimed at detecting extragalactic globular clusters (GCs) in the core of the Fornax cluster. About 4500 low resolution spectra…
Kinematic properties of early-type galaxy haloes using planetary nebulae
L. Coccato, O. Gerhard, M. Arnaboldi +11
We present new planetary nebulae (PNe) positions, radial velocities, and magnitudes for 6 early-type galaxies obtained with the Planetary Nebulae Spectrograph, their two-dimensiona…
Age, Metallicity and Star Formation History of Cluster Galaxies at z~0.3 F
P. Merluzzi, F. La Barbera, M. Massarotti +2
We investigate the color-magnitude distribution in the rich cluster AC 118 at z=0.31. The sample is selected by the photometric redshift technique, allowing to study a wide range o…
The Fornax Deep Survey with VST. V. Exploring the faintest regions of the bright early-type galaxies inside the virial radius
E. Iodice, M. Spavone, M. Capaccioli +15
This paper is based on the multi-band (ugri) Fornax Deep Survey (FDS) with the VLT Survey Telescope (VST). We study bright early-type galaxies (m_B<15 mag) in the 9 square degrees…
New insights into the structure of early-type galaxies: the Photometric Plane at z~0.3
F. La Barbera, G. Covone, G. Busarello +4
We study the Photometric Plane (PHP), namely the relation between the effective radius re, the mean surface brightness within that radius <mi>e, and the Sersic index n, in optical…
The cluster of galaxies A 2163B at z~0.2 II -- Colour gradients, re--mie relations and the Photometric Plane
F. La Barbera, G. Busarello, P. Merluzzi +3
This paper has been withdrawn by the author(s), since it has been merged with paper I (astro-ph/0307482).
Is there a dichotomy in the Dark Matter as well as in the Baryonic Matter properties of ellipticals?
N. R. Napolitano, M. Capaccioli, M. Arnaboldi +5
We have found a correlation betwen the M/L global gradients and the structural parameters of the luminous components of a sample of 19 early-type galaxies. Such a correlation suppo…
The STREGA survey. II. Globular Cluster Palomar 12
I. Musella, M. Di Criscienzo, M. Marconi +17
In the framework of the STREGA (STRucture and Evolution of the GAlaxy) survey, two fields around the globular cluster Pal 12 were observed with the aim of detecting the possible pr…
The Environmental Dependencies of Star-formation and the Origin of the Bimodality in Galaxy Properties
C. P. Haines, A. Gargiulo, A. Mercurio +4
We examine the origins of the bimodality observed in the global properties of galaxies by comparing the environmental dependencies of star-formation for giant and dwarf galaxy popu…
The first detection of ultra-diffuse galaxies in the Hydra I cluster from VEGAS survey
E. Iodice, M. Cantiello, M. Hilker +13
In this paper we report on the discovery of 27 low-surface brightness galaxies, of which 12 are candidate ultra-diffuse galaxy (UDG) in the Hydra I cluster, based on deep observati…
Galaxy evolution within the Kilo-Degree Survey
C. Tortora, N. R. Napolitano, F. La Barbera +8
The ESO Public Kilo-Degree Survey (KiDS) is an optical wide-field imaging survey carried out with the VLT Survey Telescope and the OmegaCAM camera. KiDS will scan 1500 square degre…
More evidence for an intracluster planetary nebulae population in the Virgo cluster
R. H. Mendez, M. A. Guerrero, K. C. Freeman +5
We surveyed a 50 sq arcmin region in the Virgo cluster core to search for intergalactic planetary nebulae, and found 11 candidates in the surveyed area. The measured fluxes of thes…
The first sample of spectroscopically confirmed ultra-compact massive galaxies in the Kilo Degree Survey
C. Tortora, N. R. Napolitano, M. Spavone +25
We present results from an ongoing investigation using the Kilo Degree Survey (KiDS) on the VLT Survey Telescope (VST) to provide a census of ultra-compact massive galaxies (UCMGs)…
SBF: multi-wavelength data and models
M. Cantiello, G. Raimondo, J. P. Blakeslee +2
Recent applications have proved that the Surface Brightness Fluctuations (SBF) technique is a reliable distance indicator in a wide range of distances, and a promising tool to anal…
Spectroscopic identification of r-process nucleosynthesis in a double neutron star merger
E. Pian, P. D'Avanzo, S. Benetti +81
The merger of two neutron stars is predicted to give rise to three major detectable phenomena: a short burst of gamma-rays, a gravitational wave signal, and a transient optical/nea…
A deep kinematic survey of planetary nebulae in the Andromeda Galaxy using the Planetary Nebula Spectrograph
H. R. Merrett, M. R. Merrifield, N. G. Douglas +13
We present a catalogue of positions, magnitudes and velocities for 3300 emission-line objects found by the Planetary Nebula Spectrograph in a survey of the Andromeda Galaxy, M31. O…
Dark-Matter Content of Early-Type Galaxies with Planetary Nebulae
N. R. Napolitano, A. J. Romanowsky, L. Coccato +10
We examine the dark matter properties of nearby early-type galaxies using planetary nebulae (PNe) as mass probes. We have designed a specialised instrument, the Planetary Nebula Sp…
The Fornax Deep Survey with VST. VIII. Connecting the accretion history with the cluster density
M. Spavone, E. Iodice, G. van de Ven +11
This work is based on deep multi-band (g, r, i) data from the Fornax Deep Survey with VST. We analyse the surface brightness profiles of the 19 bright ETGs inside the virial radius…
Intra-cluster patches of baryons in the core of the Fornax cluster
E. Iodice, M. Spavone, M. Cantiello +12
In the core of the Fornax cluster, on the West side of NGC1399, we have detected a previously unknown region of intra-cluster light (ICL). It is made up by several faint ($μ_r \si…
A Forming Wide Polar Ring Galaxy at z~0.05 in the VST Deep Field of the Fornax Cluster
E. Iodice, M. Capaccioli, M. Spavone +5
We present the first deep photometry of a good candidate for a forming polar ring galaxy at redshift z~0.05. This object, named FCSS J033710.0-354727, is a background galaxy in the…
Polar Ring Galaxies and the Tully Fisher relation: implications for the dark halo shape
E. Iodice, M. Arnaboldi, F. Bournaud +4
We have investigated the Tully-Fisher relation for Polar Ring Galaxies (PRGs), based on near infrared, optical and HI data available for a sample of these peculiar objects. The tot…
The Fornax Deep Survey with VST. I. The extended and diffuse stellar halo of NGC~1399 out to 192 kpc
E. Iodice, M. Capaccioli, A. Grado +13
[Abrigded] We have started a new deep, multi-imaging survey of the Fornax cluster, dubbed Fornax Deep Survey (FDS), at the VLT Survey Telescope. In this paper we present the deep p…
The Planetary Nebula Spectrograph survey of S0 galaxy kinematics. Data and Overview
A. Cortesi, M. Arnaboldi, L. Coccato +11
The origins of S0 galaxies remain obscure, with various mechanisms proposed for their formation, likely depending on environment. These mechanisms would imprint different signature…
Gravitational lensing by cosmic strings: what we learn from the CSL-1 case
M. V. Sazhin, O. S. Khovanskaya, M. Capaccioli +5
Cosmic strings were postulated by Kibble in 1976 and, from a theoretical point of view, their existence finds support in modern superstring theories, both in compactification model…
Evolution of central dark matter of early-type galaxies up to z ~ 0.8
C. Tortora, N. R. Napolitano, R. P. Saglia +3
We investigate the evolution of dark and luminous matter in the central regions of early-type galaxies (ETGs) up to z ~ 0.8. We use a spectroscopically selected sample of 154 clust…
Fitting planes to early-type galaxies: MIST for the determination of the Fundamental Plane
F. La Barbera, G. Busarello, M. Capaccioli
The present study deals with the problem of deriving the coefficients of the fundamental plane (FP) of early-type galaxies. We introduce statistical models of the FP and relative f…
GRAWITA: VLT Survey Telescope observations of the gravitational wave sources GW150914 and GW151226
E. Brocato, M. Branchesi, E. Cappellaro +49
We report the results of deep optical follow-up surveys of the first two gravitational-wave sources, GW150914 and GW151226, done by the GRAvitational Wave Inaf TeAm Collaboration (…
Dearth of dark matter or massive dark halo? Mass-shape-anisotropy degeneracies revealed by NMAGIC dynamical models of the elliptical galaxy NGC 3379
F. De Lorenzi, O. Gerhard, L. Coccato +10
Recent results from the Planetary Nebula Spectrograph (PN.S) survey have revealed a rapidly falling velocity dispersion profile in the nearby elliptical galaxy NGC 3379, casting do…
The Galactic Halo density distribution from photometric survey data: results of a pilot study
M. Cignoni, V. Ripepi, M. Marconi +4
Our goal is to recover the Galactic Halo spatial density by means of field stars. To this aim, we apply a new technique to the Capodimonte Deep Field (OACDF, Alcala' et al. 2004),…
The Galactic globular cluster NGC 1851: its dynamical and evolutionary properties
I. Saviane, G. Piotto, F. Fagotto +3
We have completely mapped the globular cluster NGC 1851 with VI CCD photometry, obtaining a CMD for ca. 20500 stars. From the apparent luminosity of the HB we derive a distance mod…
VEGAS: a VST Early-type GAlaxy Survey. IV. NGC 1533, IC 2038 and IC 2039: an interacting triplet in the Dorado group
A. Cattapan, M. Spavone, E. Iodice +10
This paper focuses on NGC 1533 and the pair IC 2038 and IC 2039 in Dorado a nearby, clumpy, still un-virialized group. We obtained their surface photometry from deep OmegaCAM@ESO-V…
Strong lens search in the ESO public Survey KiDS
N. R. Napolitano, G. Covone, N. Roy +10
We have started a systematic search of strong lens candidates in the ESO public survey KiDS based on the visual inspection of massive galaxies in the redshift range . As…
Shapley Supercluster Survey (ShaSS): Galaxy Evolution from Filaments to Cluster Cores
P. Merluzzi, G. Busarello, C. P. Haines +11
We present an overview of a multi-wavelength survey of the Shapley supercluster (SSC; z~0.05) covering a contiguous area of 260 h^-2_70 Mpc^2 including the supercluster core. The p…
Dynamical model of an obscuring clumpy torus in AGNs: I. Velocity and velocity dispersion maps for interpretation of ALMA observations
E. Yu. Bannikova, A. V. Sergeyev, N. A. Akerman +4
We have developed the dynamical model of a clumpy torus in an active galactic nucleus (AGN) and compared to recent ALMA observations. We present -body simulations of a torus in…
Microlensing search towards M31
S. Calchi Novati, G. Iovane, A. A. Marino +26
We present the first results of the analysis of data collected during the 1998-99 observational campaign at the 1.3 meter McGraw-Hill Telescope, towards the Andromeda galaxy (M31),…
Stellar population gradients from cosmological simulations: dependence on mass and environment in local galaxies
C. Tortora, A. D. Romeo, N. R. Napolitano +4
The age and metallicity gradients for a sample of group and cluster galaxies from N-body+hydrodynamical simulation are analyzed in terms of galaxy stellar mass. Dwarf galaxies show…
The stellar dynamics and mass of NGC 1316 using the radial velocities of planetary nebulae
M. Arnaboldi, K. C. Freeman, O. Gerhard +5
We present a study of the kinematics of the outer regions of the early-type galaxy NGC 1316, based on radial velocity measurements of 43 planetary nebulae as well as deep integrate…
The PN.S Elliptical Galaxy Survey: a standard LCDM halo around NGC 4374?
N. R. Napolitano, A. J. Romanowsky, M. Capaccioli +10
As part of our current programme to test LCDM predictions for dark matter (DM) haloes using extended kinematical observations of early-type galaxies, we present a dynamical analysi…
Structure and kinematics of the peculiar galaxy NGC 128
M. D'Onofrio, M. Capaccioli, P. Merluzzi +3
This is a multiband photometric and spectroscopic study of the peculiar S0 galaxy NGC128. We present results from broad (B and R) and narrow band optical CCD photometry, near (NIR)…
Elliptical Galaxies: Darkly Cloaked or Scantily Clad?
A. J. Romanowsky, N. G. Douglas, K. Kuijken +7
Planetary nebulae (PNe) may be the most promising tracers in the halos of early-type galaxies. We have used multi-object spectrographs on the WHT and the VLT, and the new Planetary…
Global Properties of the Rich Cluster ABCG 209 at z~0.2. Spectroscopic and Photometric Catalogue
A. Mercurio, F. La Barbera, C. P. Haines +3
This paper is aimed at giving an overview of the global properties of the rich cluster of galaxies ABCG 209. This is achieved by complementing the already available data with new m…
Lens candidates in the Capodimonte Deep Field in the vicinity of the CSL1 object
M. V. Sazhin, O. S. Khovanskaya, M. Capaccioli +4
CSL1 is a peculiar object discovered in the OACDF. Photometric and spectroscopic investigation strongly suggest that it may be the first case of gravitational lensing by cosmic str…
The Fornax Cluster VLT Spectroscopic Survey IV -- Cold kinematical substructures in the Fornax core from COSTA
N. R. Napolitano, M. Gatto, C. Spiniello +15
The COld STream finder Algorithm (COSTA) is a novel algorithm to find streams in the phase space of planetary nebulae (PNe) and globular cluster (GCs) populations. COSTA isolates g…
The Extended Spatial Distribution of Globular Clusters in the Core of the Fornax Cluster
R. D'Abrusco, M. Cantiello, M. Paolillo +16
We report the discovery of a complex extended density enhancement in the Globular Clusters (GCs) in the central ( Mpc) of the Fornax cluster,…
Shapley Supercluster Survey: Construction of the Photometric Catalogues and i-band Data Release
A. Mercurio, P. Merluzzi, G. Busarello +10
The Shapley Supercluster Survey is a multi-wavelength survey covering an area of ~23 deg^2 (~260 Mpc^2 at z=0.048) around the supercluster core, including nine Abell and two poor c…
The Fornax Deep Survey with VST. X. The assembly history of the bright galaxies and intra-group light in the Fornax A subgroup
M. A. Raj, E. Iodice, N. R. Napolitano +13
We present the study of the south-west group in the Fornax cluster centred on the brightest group galaxy (BGG) Fornax A, observed as part of the Fornax Deep Survey (FDS). This incl…
Major axis kinematics of 15 early-type galaxies in the Fornax cluster
M. D'Onofrio, S. R. Zaggia, G. Longo +2
Major axis rotation curves and velocity dispersions profiles, extending out to about one effective radius, are presented for 15 ellipticals and S0's out of the photometric sample o…
White dwarfs in the Capodimonte deep field
R. Silvotti, S. Catalan, M. Cignoni +4
In this article we describe the search for white dwarfs (WDs) in the multi-band photometric data of the Capodimonte deep field survey. The WD candidates were selected through the V…
Probing the kinematics of early-type galaxy halos using planetary nebulae
L. Coccato, O. Gerhard, M. Arnaboldi +11
We present first results of a study of the halo kinematics for a sample of early type galaxies using planetary nebulae (PNe) as kinematical tracers. PNe allow to extend up to sever…
The PN.S Elliptical Galaxy Survey: the dark matter in NGC 4494
N. R. Napolitano, A. J. Romanowsky, L. Coccato +12
We present new Planetary Nebula Spectrograph observations of the ordinary elliptical galaxy NGC 4494, resulting in positions and velocities of 255 PNe out to 7 effective radii (25…
Testing the nature of S0 galaxies using planetary nebula kinematics in NGC 1023
E. Noordermeer, M. R. Merrifield, L. Coccato +9
We investigate the manner in which lenticular galaxies are formed by studying their stellar kinematics: an S0 formed from a fading spiral galaxy should display similar cold outer d…
The PN.S Elliptical Galaxy Survey: Data Reduction, Planetary Nebula Catalog, and Basic Dynamics for NGC 3379
N. G. Douglas, N. R. Napolitano, A. J. Romanowsky +9
We present results from Planetary Nebula Spectrograph (PN.S) observations of the elliptical galaxy NGC 3379 and a description of the data reduction pipeline. We detected 214 planet…
Evolution of galaxy size--stellar mass relation from the Kilo Degree Survey
N. Roy, N. R. Napolitano, F. La Barbera +16
We have obtained structural parameters of about 340,000 galaxies from the Kilo Degree Survey (KiDS) in 153 square degrees of data release 1, 2 and 3. We have performed a seeing con…
Optical analysis of a CMB cosmic string candidate
O. S. Sazhina, D. Scognamiglio, M. V. Sazhin +1
The complexity of the cosmological scenario regarding cosmic strings (CSs) stands still in the way of a complete understanding. We describe here a promising strategy for the possib…
OmegaWINGS: OmegaCAM@VST observations of WINGS galaxy clusters
M. Gullieuszik, B. Poggianti, G. Fasano +13
The Wide-field Nearby Galaxy-cluster Survey (WINGS) is a wide-field multi-wavelength survey of X-ray selected clusters at z =0.04-0.07. The original 34'x34' WINGS field-of- view ha…
Intracluster Planetary Nebulae in Virgo: Photometric selection, spectroscopic validation and cluster depth
M. Arnaboldi, J. A. L. Aguerri, N. R. Napolitano +6
We have imaged an empty area of 34'x34' one and a half degree north of the Virgo cluster core to survey for intracluster planetary nebula candidates. We have implemented and tested…
Testing Yukawa-like potentials from f(R)-gravity in elliptical galaxies
N. R. Napolitano, S. Capozziello, A. J. Romanowsky +2
We present the first analysis of extended stellar kinematics of elliptical galaxies where a Yukawa--like correction to the Newtonian gravitational potential derived from f(R)-gravi…
Abundance ratios and IMF slope in the dwarf elliptical galaxy NGC~1396 with MUSE
J. J. Mentz, F La Barbera, R. F. Peletier +16
Deep observations of the dwarf elliptical (dE) galaxy NGC 1396 (M, Mass M), located in the Fornax cluster, have been performed with the VLT/…
The Fornax Deep Survey with VST. VII. Evolution and Structure of Late Type Galaxies inside the Virial Radius of the Fornax Cluster
M. A. Raj, E. Iodice, N. R. Napolitano +15
We present the study of a magnitude limited sample (mB < 16.6 mag) of 13 late type galaxies (LTGs), observed inside the virial radius, Rvir 0.7 Mpc, of the Fornax cluster within th…
Data reduction and astrometry strategies for wide-field images: an application to the Capodimonte Deep Field
J. M. Alcala', M. Radovich, R. Silvotti +4
The Capodimonte Deep Field (OACDF) is a multi-colour imaging survey on two 0.5x0.5 square degree fields performed in the BVRI bands and in six medium-band filters (700 - 900 nm) wi…
NGC 1399: a complex dynamical case
N. R. Napolitano, M. Arnaboldi, M. Capaccioli
Evidence for a disturbed velocity structure in the outer regions of the galaxy NGC1399 comes from a re-analysis of the planetary nebulae data from Arnaboldi et al. (1994). We find…
Optical (VRI) Photometry in the Field of the Galaxy Cluster AC 118 at z=0.31
G. Busarello, Merluzzi, F. La Barbera +2
We present new photometric V-, R- and I-band data for the rich galaxy cluster AC 118 at z=0.31. The new photometry covers an area of 8.6x8.6 arcmin, corresponding to 2.9$\times…
Colour and stellar population gradients in galaxies
C. Tortora, N. R. Napolitano, V. F. Cardone +3
We discuss the colour, age and metallicity gradients in a wide sample of local SDSS early- and late-type galaxies. From the fitting of stellar population models we find that metall…