Conveners
Galassie e Cosmologia
- Bianca Maria Poggianti (Istituto Nazionale di Astrofisica (INAF))
Galassie e Cosmologia
- Bianca Maria Poggianti (Istituto Nazionale di Astrofisica (INAF))
Within INAF, research in the field of 'Galaxies and Cosmology' falls under the Scientific National Grouping 1 (Raggruppamento Scientifico Nazionale 1, RSN1). The scientific endeavors of RSN1 encompass both theoretical investigation and observational studies employing ground-based and space-borne telescopes. In this presentation, I will provide an overview of the primary activities undertaken...
In questo contributo presenterò il Sardia Radio Telescope e il suo recente
upgrade per lo studio dell'Universo alle alte frequenze radio. Particolare
risalto verrà posto sulle attese scientifiche nel campo della radioastronomia
extragalattica.
Galaxies inhabit a wide range of environments and therefore are affected by different physical mechanisms. While environmental effects are typically deemed significant mainly within galaxy clusters, even outside clusters, galaxies can be significantly affected by external processes connected to their position within the cosmic web. Exploiting the data from the GAs Stripping Phenomena in...
The LCDM paradigm suggests that the intracluster light (ICL) in galaxy clusters is formed due to the gravitational interactions that occur during the formation of the Brightest Cluster Galaxies (BCG). As a result, the ICL serves as a fossil record of the mass assembly process in galaxies, and its physical properties (luminosity, color, stellar population, fraction(f_icl)), provide insights...
Cosmology and astrophysical processes (like Supernovae and AGN feedback) both influence the formation and evolution of galaxies in different ways.
By comparing scaling relations among size, dark matter and stellar mass from thousands of CAMELS simulations with observations, we demonstrate that it is possible to constrain the cosmological parameters ($\mathrm{Ω}_\mathrm{m}$ and, with less...
The ESA Euclid space telescope is carrying out routine survey operations and rapidly building an unparalleled imaging and spectroscopic dataset. The near-infrared spectrometer and photometer (NISP) is imaging the sky with direct imaging and slitless spectroscopy, complemented in the optical with the high resolution VIS camera, as well as ground-based photometry. Over the six-year mission,...
JWST is transforming our understanding of the high-redshift universe and of the epoch of cosmic dawn. In this talk, I will focus on the results from the GLASS-JWST survey and from its follow-up spectroscopic Cycle2 campaign. The first set of GLASS-JWST NIRCam observations led to the discovery of two bright photometric candidates at z~10.5 and z~12.2 providing the first evidence of a puzzling...
I will give an introduction to the structure and dynamics of the central 3 kpc of the Milky Way. This region hosts a complex star-forming ecosystem that is continually exchanging matter with the rest of the Galaxy through inflows and outflows. The Galactic bar efficiently transports gas from the Galactic disc towards the centre at a rate of ~1 Msun/yr, creating a ring-like accumulation of...
Strong gravitational lensing provides the most precise mass probe in the Universe. It not only enables the constraint of total mass within lensed structures (arcs, rings, or multiple images), but also facilitates the exploration of mass density profiles, dark matter content, and the Initial Mass Function within lens galaxies. Therefore, *strong lenses have the potential to obtain unique...
PDS 456 is a nearby, radio-quiet, type 1 QSO with a $L_{\rm BOL}$ $\sim$ 10$^{47}$ erg/s and can be regarded as the local counterpart of QSOs shining at $z \sim$2-3. It exhibits the prototype of massive and persistent X-ray ultra-fast ($\sim$0.25$c$) outflow with a kinetic power of 0.2$L_{\rm BOL}$(i.e., enough to significantly influence the evolution of the host galaxy). Our high-resolution...
Low surface-brightness (LSB) dwarf galaxies and the subgroup of ultra-diffuse galaxies (UDGs) are an interesting class of objects as their evolutionary paths, contribution to the galaxy luminosity function, formation scenarios and dark matter content are still poorly constrained.
The study of LSB galaxies allows us to test the galaxy formation theories in a so far unexplored and unique...
Stellar bars are present in about two-thirds of disc galaxies in the local Universe and are believed to play a crucial role in secular evolutionary processes, since they efficiently redistribute gas, stars and angular momentum within their hosts.
In this talk, I will present the main results obtained from a spatially resolved analysis of a sample of six nearby barred galaxies, performed with...
