A5006846518- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Astrophysical Phenomena and Observations
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astronomy and Astrophysical Research
- Astrophysics and Cosmic Phenomena
- Mass Spectrometry Techniques and Applications
- Spectroscopy and Laser Applications
- Astronomical Observations and Instrumentation
- GaN-based semiconductor devices and materials
- Solar and Space Plasma Dynamics
- Infrared Target Detection Methodologies
- Particle accelerators and beam dynamics
- Nuclear Materials and Properties
- Power Line Communications and Noise
- Magnetic confinement fusion research
- Fusion materials and technologies
- Laser Design and Applications
- Pharmacological Effects and Assays
- Advanced Optical Sensing Technologies
- Advanced Chemical Physics Studies
Max Planck Institute for Extraterrestrial Physics
2025
Arcetri Astrophysical Observatory
2020-2024
University of Florence
2020-2024
ETH Zurich
1985
Quasar feedback in the form of powerful outflows is invoked as a key mechanism to quench star formation galaxies, although direct observational evidence still scarce and debated. Here we present Early Release Science JWST NIRSpec IFU observations z=1.59 prototypical obscured Active Galactic Nucleus (AGN) XID2028: This target represents unique test case for studying quasar at peak epoch AGN-galaxy co-evolution because extensive multi-wavelength coverage available massive extended outflow...
The existence of multiple active galactic nuclei (AGN) at small projected distances on the sky is due to either presence multiple, in-spiraling SMBHs, or gravitational lensing a single AGN. Both phenomena allow us address important astrophysical and cosmological questions. However, few kpc-separation AGN are currently known. Recently, newly-developed Gaia Multi peak (GMP) method provided numerous new candidate members these populations. We present spatially resolved, integral-field...
The Diffuse Ionized Gas (DIG) contributes to the nebular emission of galaxies, resulting in line flux ratios that can be significantly different from those produced by HII regions. Comparing [SII]6717,31 between pointed observations regions nearby galaxies and integrated spectra more distant it has been recently claimed DIG also deeply affect bright, star-forming a large correction must applied observed recover genuine contribution Here we show instead effect on is lower than assumed...
Nebular HeII$\lambda$4686\AA~line emission is useful to unveil active galactic nuclei (AGN) residing in actively star-forming (SF) galaxies, typically missed by the standard BPT classification. Here we adopt HeII diagnostic identify hidden AGN Local Universe using for first time spatially-resolved data from Data Release 15 of Mapping Nearby Galaxies at APO survey (MaNGA DR15). By combining results and diagnostics, overall select 459 host candidates ($\sim$10% MaNGA DR15), out which 27 are...
An increasing number of observations and simulations suggests that low-power (<10$^{44}$ erg s$^{-1}$) jets may be a significant channel feedback produced by active galactic nuclei (AGN), but little is known about their actual effect on host galaxies from the observational point view. We targeted four luminous type 2 AGN hosting moderately powerful radio emission ($\sim$10$^{44}$ s$^{-1}$), two which possibly third are associated with jets, optical integral field spectroscopy Multi Unit...
Outflows driven by active galactic nuclei (AGN) are expected to have a significant impact on the host galaxy evolution, but it is still debated how they accelerated and propagate galaxy-wide scales. This work addresses these questions studying link between X-ray, nuclear ultra-fast outflows (UFOs) extended ionised outflows, for first time in two quasars close peak of AGN activity ($z\sim2$), where feedback be more effective. As targets, we selected multiple-lensed at $z\sim1.5$, HS 0810+2554...
ABSTRACT We present spatially resolved H α properties of 21 type 1 AGN host galaxies at z ∼ 2 derived from the SUPER survey. These targets were observed with adaptive optics capabilities SINFONI spectrograph, a near-infrared integral field that provided median spatial resolution 0.3 arcsec (∼2 kpc). model emission line profile in each pixel to investigate whether it traces gas narrow region or if is associated star formation. To do this, we first presence after subtracting PSF. find extended...
The novel Gaia multi peak (GMP) technique has proven to be able successfully select dual and lensed active galactic nuclei (AGN) candidates at sub-arcsecond separations. Both populations are important because AGN represent one of the central, still largely untested, predictions ΛCDM cosmology, compact allow us probe central regions lensing galaxies. In this work, we present high-spatial-resolution spectroscopy 12 GMP-selected systems. We used adaptive-optics assisted integral-field...
We present spatially resolved VLT/SINFONI spectroscopy with adaptive optics of type-2 active galactic nuclei (AGN) from the SINFONI Survey for Unveiling Physics and Effect Radiative feedback (SUPER), which targeted X-ray bright ( L 2 − 10 keV ≳ 42 erg s −1 ) AGN at cosmic noon z ∼ 2). Our analysis rest-frame optical spectra unveils ionised outflows in all seven examined targets, as traced via [O III ] λ 5007 line emission, moving v 600 km . These are clearly six objects extend on 2–4 kpc...
Abstract Relics are massive, compact and quiescent galaxies that assembled the majority of their stars in early Universe lived untouched until today, completely missing any subsequent size-growth caused by mergers interactions. They provide unique opportunity to put constraints on first phase mass assembly with ease being nearby. While only a few relics have been found local Universe, INSPIRE project has confirmed 38 at higher redshifts ($z$ ∼ 0.2 − 0.4), fully characterising integrated...
We present an analysis of the gas kinematics in NGC 2992 based on VLT/MUSE, ALMA, and VLA data. Our aim is to characterise disc, wind, their interplay cold molecular warm ionised phases. a changing-look Seyfert known host both nuclear ultrafast outflow (UFO), AGN-driven kiloparsec-scale wind. CO(2−1) H α arise from multiphase disc with inclination 80 deg radii 1.5 1.8 kpc, respectively. By modelling kinematics, we find that velocity dispersion phase, σ , consistent star forming galaxies at...
We have measured branching fractions for 60 Cr I lines that originate from 14 different upper levels, with energies ranging 3.3 to 6.9 eV. The measurements, obtained on the solar Fourier-Transform Spectrometer of U.S. National Optical Astronomy Observatory Kitt Peak, cover a wavelength range extending c. 290 900 nm. fractions, together level lifetimes determined by use laser excitation Kwiatkowski et al., yield transition probabilities an accuracy 7 per cent. A comparison precision data in...
We present HOMERUN (Highly Optimized Multi-cloud Emission-line Ratios Using photo-ionizatioN), a new approach to modeling emission lines from photoionized gas that can simultaneously reproduce all observed line intensities wide range of ionization levels with high accuracy. Our is based on the weighted combination multiple single-cloud photoionization models, and contrary previous works, novelty our consists using weights as free parameters fit constraining them data. One main applications...
Quasar feedback in the form of powerful outflows is invoked as a key mechanism to quench star formation galaxies, although direct observational evidence still scarce and debated. Here we present Early Release Science JWST NIRSpec IFU observations z=1.59 prototypical obscured Active Galactic Nucleus (AGN) XID2028: This target represents unique test case for studying quasar at peak epoch AGN-galaxy co-evolution because extensive multi-wavelength coverage available massive extended outflow...
Studying the feedback process of active galactic nuclei (AGN) requires characterisation multiple kinematical components, such as rotating gas and stellar discs, outflows, inflows, jets. The usual approach to compare observed galaxy properties with theoretical predictions relies on simplified kinematic models. This allows us assess mutual interaction between components determine energy injection rate into interstellar medium. However, these models have several limitations, they often do not...
We present HOMERUN (Highly Optimized Multi-cloud Emission-line Ratios Using photo-ionizatioN), a new approach to modelling emission lines from photoionized gas that can simultaneously reproduce all observed line intensities wide range of ionization levels and with high accuracy. Our is based on the weighted combination multiple single-cloud photoionization models and, contrary previous works, novelty our consists in using weights as free parameters fit constraining them data. One main...
The energy released by active galactic nuclei (AGN) has the potential to heat or remove gas of ISM, thus likely impacting cold molecular reservoir host galaxies at first, with star formation following as a consequence on longer timescales. Previous works high- z galaxies, which compared content those without identified AGN, have yielded conflicting results, possibly due selection biases and other systematics. To provide reliable benchmark for galaxy evolution models cosmic noon ( = 1 − 3),...
The Gaia Multipeak (GMP) technique can be used to identify large numbers of dual or lensed active galactic nucleus (AGN) candidates at subarcsec separation, allowing us study both multiple supermassive black holes (SMBHs) in the same galaxy and rare, compact systems. observed samples test predictions models SMBH merging when (1) selection function GMP is known, (2) each system has been classified as a AGN, an AGN/star alignment. Here we show that very efficient for separations above 0.15″...
We use MUSE adaptive optics (AO) data in Narrow Field Mode to study the properties of ionised gas MR 2251-178 and PG 1126-041, two nearby (z~0.06) bright quasars hosting sub-pc scale Ultra Fast Outflows (UFOs) detected X-ray band. decompose optical emission from diffuse into a low- high-velocity components. The former is characterised by clean, regular velocity field low (~80 km/s) dispersion. It traces regularly rotating while it possibly associated tidal debris recent merger or flyby....
The novel Gaia Multi Peak (GMP) technique has proven to be able successfully select dual and lensed AGN candidates at sub-arcsec separations. Both populations are important because represent one of the central, still largely untested, predictions lamdaCDM cosmology, compact quasars allow probe central regions lensing galaxies. In this work, we present high spatial resolution spectroscopy twelve GMP-selected systems. We use adaptive-optics assisted integral-field spectrograph MUSE VLT resolve...
We present an analysis of the gas kinematics in NGC 2992, based on VLT/MUSE, ALMA and VLA data, aimed at characterising disk, wind their interplay cold molecular warm ionised phases. CO(2-1) H$\rm \alpha~$ arise from a multiphase disk with inclination 80 deg radii 1.5 1.8 kpc, respectively. find that velocity dispersion phase is consistent star forming galaxies same redshift, except inner 600 pc region, region between cone walls disk. This suggests disk-wind interaction locally boosts...
An increasing number of observations and simulations suggests that low-power (< 10 44 erg s −1 ) jets may be a significant channel feedback produced by active galactic nuclei (AGN), but little is known about their actual effect on host galaxies from the observational point view. We targeted four luminous type 2 AGN hosting moderately powerful radio emission (∼10 ), two which possibly third are associated with jets, optical integral field spectroscopy Multi Unit Spectroscopic Explorer...
The energy released by AGN has the potential to heat or remove gas of ISM, thus likely impacting cold molecular reservoir host galaxies at first, with star formation following on longer timescales. Previous works high-z have yielded conflicting results, possibly due selection biases and other systematics. To provide a reliable benchmark for galaxy evolution models cosmic noon (z=1-3), two surveys were conceived: SUPER KASHz, both targeting unbiased X-ray-selected z>1 that span wide...