A5084873151- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Hydrology and Watershed Management Studies
- Astronomical Observations and Instrumentation
- Water resources management and optimization
- Astrophysical Phenomena and Observations
- Climate variability and models
- Astrophysics and Cosmic Phenomena
- Hydrology and Drought Analysis
- Flood Risk Assessment and Management
- Scientific Research and Discoveries
- Hydrology and Sediment Transport Processes
- Hydrological Forecasting Using AI
- Energy Load and Power Forecasting
- Landslides and related hazards
- Climate change and permafrost
- Meteorological Phenomena and Simulations
- Gamma-ray bursts and supernovae
- Water Resources and Management
- Calibration and Measurement Techniques
- Water Systems and Optimization
- Groundwater flow and contamination studies
- Urban Stormwater Management Solutions
Goodyear (United States)
2025
University of Milano-Bicocca
2021-2023
Brera Astronomical Observatory
2022-2023
Keele University
2023
University of Salerno
2008-2023
Centre National de la Recherche Scientifique
2019-2021
Aix-Marseille Université
2019-2021
Laboratoire d’Astrophysique de Marseille
2019-2020
Peking University
2016-2019
Kavli Institute for Theoretical Sciences
2016-2019
We present a spectroscopic study of 287 Planetary Nebulas (PNs) in total area ~0.4 deg^2 around the BCG M87 Virgo A. With these data we can distinguish stellar halo from co-spatial intracluster light (ICL). PNs were identified their narrow and symmetric redshifted lambda 5007\4959 Angstrom [OIII] emission lines, absence significant continuum. implement robust technique to measure velocity dispersion projected phase-space identify associated with ICL. The distribution spectroscopically...
The Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) is a blind narrow-band H$\alpha$+[NII] imaging survey carried out with MegaCam at the CFHT. During pilot observations we have observed NGC 4330, an intermediate mass, edge-on star forming spiral currently falling into core of cluster. New deep revealed low surface brightness 10 kpc tail exhibiting peculiar filamentary structure. filaments are remarkably parallel one another and clearly indicate direction motion galaxy in...
Aims. We present kinematic and photometric evidence for an accretion event in the halo of cD galaxy M 87 last Gyr.
We study the link between galaxies and HI-selected absorption systems at z~3-4 in MUSE Analysis of Gas around Galaxies (MAGG) survey, an ESO large programme consisting integral field pectroscopic observations 28 quasar fields hosting 61 strong absorbers with $\rm N_{\rm HI}\gtrsim 10^{16.5}~\rm cm^{-2}$. identify 127 Ly$\alpha$ emitting (LAEs) absorbers, corresponding to a detection rate 82$\pm$16 per cent. The luminosity function these LAEs is approximately 5 times higher normalization than...
ABSTRACT We present a study of the metal-enriched halo gas, traced using Mg ii and [O ii] emission lines, in two large, blind galaxy surveys – MUSE (Multi Unit Spectroscopic Explorer) Analysis Gas around Galaxies (MAGG) Ultra Deep Field (MUDF). By stacking sample ≈600 galaxies (stellar masses $M_*$ ≈ 106–12 $\rm M_\odot$), we characterize for first time average metal line from general population haloes at 0.7 ≤ z 1.5. The extends farther out than stellar continuum emission, on to ≈25 ≈45...
We investigate the diffuse light in outer regions of nearby elliptical galaxy M87 Virgo cluster, using planetary nebulas (PNs) as tracers. The surveyed areas (0.43 squared degrees) cover up to a radial distance 150 kpc, ransition region between halo and intracluster (ICL). All PNs are identified through on-off band technique automatic selection criteria based on distribution detected sources colour-magnitude diagram properties their point-spread function. extract catalogue 688 objects down...
The Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) is a blind narrow-band Halpha+[NII] imaging survey carried out with MegaCam at the Canada-France-Hawaii Telescope. covers whole cluster region from its core to one virial radius (104 deg^2). sensitivity of f(Halpha) ~ 4 x 10^-17 erg sec-1 cm^-2 (5 sigma detection limit) for point sources and Sigma (Halpha) 2 10^-18 sec^-1 arcsec^-2 (1 limit 3 arcsec resolution) extended sources, making VESTIGE deepest largest nearby...
<div class="section abstract"><div class="htmlview paragraph">This paper focuses on the development of a tire thermal model for automotive applications, addressing challenge accurately predicting temperatures different layers tire, under various driving conditions. The primary goal is to enhance understanding temperature behavior improve safety, performance, and durability. research utilizes physics 1-D from which system differential equations, describing interaction between...
We present a kinematic study of sample 298 planetary nebulas (PNs) in the outer halo central Virgo galaxy M87 (NGC~4486). The line-of-sight velocities these PNs are used to identify sub-components, measure angular momentum content smooth halo, and constrain orbital distribution stars at large radii. find that surface density profile ICPNS $100\, \mathrm{kpc}$ radii has shallow logarithmic slope, $-\alpha_{\rm ICL}\simeq -0.8$, dominating light largest momentum-related $\lambda_{\mathrm{R}}$...
M49 (NGC 4472) is the dominant galaxy in subcluster B of Virgo Cluster, and a benchmark for studying build-up extended halos brightest group galaxies outskirts clusters. We investigate kinematics outer halo M49, look substructures, describe transition to surrounding intra-group light. As kinematic tracers we use planetary nebulae (PNe), combining from Planetary Nebula Spectrograph (PN.S) early-type survey with our recent deep photometric sample. study position-velocity-plane bright faint PN...
Intra-cluster (IC) populations are expected to be a natural result of the hierarchical assembly clusters, yet their low space densities make them difficult detect and study. We present first definitive kinematic detection an IC population globular clusters (GCs) in Virgo cluster, around central galaxy, M87. This study focuses on core for which combination NGVS photometry follow-up spectroscopy allows us reject foreground star contamination explore GC kinematics over full dynamical range. The...
Context . In the hierarchical two-phase formation scenario, halos of early type galaxies (ETGs) are expected to have different physical properties from galaxies’ central regions. Aims The ePN.S survey characterizes kinematic ETG using planetary nebulae (PNe) as tracers, overcoming limitations absorption line spectroscopy at low surface brightness. Methods We present two-dimensional velocity and dispersion fields for 33 ETGs, including fast (FRs) slow rotators (SRs). were reconstructed...
The galaxy M49 (NGC 4472) is the brightest early-type in Virgo Cluster. It located Subcluster B and has an unusually blue, metal-poor outer halo. Planetary nebulae (PNe) are excellent tracers of diffuse intragroup light. We present a photometric survey PNe galaxy's extended halo to characterise its PN population, as well surrounding light (IGL) B. were identified based on their bright [OIII]5007 Å emission absence broad-band continuum. identify 738 out radius 155 kpc from M49's centre which...
We present a study of ultra compact dwarf (UCD) galaxies in the Virgo cluster based mainly on imaging from Next Generation Cluster Survey (NGVS). Using $\sim$100 deg$^{2}$ $u^*giz$ imaging, we have identified more than 600 candidate UCDs, core out to its virial radius. Candidates been selected through combination magnitudes, ellipticities, colors, surface brightnesses, half-light radii and, when available, radial velocities. were also visually validated deep NGVS images. Subsamples varying...
Low-surface-brightness galaxies (LSBs) contribute to a significant fraction of all the in Universe. Ultra-diffuse (UDGs) form subclass LSBs that has attracted lot attention recent years (although its definition may vary between studies). Although UDGs are found large numbers galaxy clusters, groups, and field, their formation evolution still very much debated. Using comprehensive set multiwavelength data from NGVS (optical), VESTIGE (H$\alpha$ narrowband), GUViCS (UV) surveys, we studied...
The Exxon Valdez oil spill emergency has shown that simulation of spills trajectory is the main action in planning response measures. Modeling slick allows predicting advance direction motion stain, time it will take to reach shore and assess possible environmental consequences for contaminated coastal zone. In this paper, was analyzed using two different models, GNOME model HAZAT model. Conclusions are drawn about reasons differences results provided by models. accuracy strongly related...
Using a compilation of H α fluxes for 384 star-forming galaxies detected during the Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE), we study several important scaling relations linking star formation rate, specific stellar mass, mass surface density, and atomic gas depletion timescale complete sample in rich environment. The extraordinary sensitivity narrow-band imaging data allows us to whole dynamic range luminosity function, from massive ( M ≃ 10 11 ⊙ ) dwarf systems 6...
Abstract. The paper focuses on the observation of interannual and intra-annual climate variability impact soil moisture temporal patterns variation, for an experimental site located in Southern Italy characterized by a typical Mediterranean climate. Analysed data consist three years water content time series measured during period 2004–2007, under intermediate (2004/2005), wet (2005/2006) dry (2006/2007) climatological conditions. Results show that, case study, precipitation fluctuation...
We have observed the giant elliptical galaxy M87 during Virgo Environmental Survey Tracing Galaxy Evolution (VESTIGE), a blind narrow-band Halpha+[NII] imaging survey of cluster carried out with MegaCam at Canada French Hawaii Telescope (CFHT). The deep image confirmed presence filament ionised gas extending up to ~ 3 kpc in north-western direction and 8 south-east, couple plumes gas, weakest which, 18 from nucleus, was previously unknown. analysis optical images taken NGVS confirms that...
Aims. We measure far-infrared (FIR) emission from tails of stripped dust following the ionised and atomic gas components in galaxies undergoing ram pressure stripping. study dust-to-gas relative distribution mass ratio interstellar medium relate them to those intra-cluster (ICM), thus linking cluster-ICM-galaxy evolution at small-scales. The galaxy sample consists three Scd Virgo with stellar masses range 10 9 ≲ M * ⊙ within 1 Mpc cluster centre, namely NGC 4330, 4522, 4654. Methods. Through...
The evolution of galaxies depends on their interaction with the surrounding environment. Ultra-diffuse (UDGs) have been found in large numbers clusters. We detected a few star-forming blobs VESTIGE survey, located at $\sim$5 kpc from UDG, namely NGVS 3543, association an HI gas cloud AGC 226178, suggesting recent between this low-surface-brightness system and cluster use complete set multi-frequency data including deep optical, UV, narrow-band H${\alpha}$ imaging to understand formation...