A5093452740- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Adaptive optics and wavefront sensing
- Advanced Thermodynamics and Statistical Mechanics
- Stochastic processes and financial applications
- Scientific Research and Discoveries
- Astronomical Observations and Instrumentation
- Radio Astronomy Observations and Technology
- Advanced Thermodynamic Systems and Engines
- Complex Systems and Time Series Analysis
- Superconducting and THz Device Technology
- Particle physics theoretical and experimental studies
- Computational Physics and Python Applications
Osservatorio Astronomico di Padova
2023-2024
University of Padua
2023-2024
The James Webb Space Telescope (JWST) is revolutionizing our understanding of the Universe by unveiling faint, near-infrared dropouts previously beyond reach, ranging from exceptionally dusty sources to galaxies up redshift $z \sim 14$. In this paper, we identify F200W-dropout objects in Cosmic Evolution Early Release Science (CEERS) survey which are absent existing catalogs. Our selection method can effectively obscured low-mass ($\log \text{M}_* \leq 9$) at 6$, massive dust-rich 12$, and...
The Tully-Fisher relation (TFR) is one of the most important and widely used empirical correlations in extragalactic astronomy. Apart from its importance as a secondary distance indicator, TFR serves test for galaxy evolution models, because it connects baryonic dark matter components galaxies. We aimed at simulating multi-wavelength UV to mid-infrared (MIR) wavelengths TNG50 cosmological simulation z = 0, comparing results with observational studies. Our goal was compare wavelength...
Abstract The improved sensitivity of interferometric facilities to the 21 cm line atomic hydrogen (H i ) enables studies its properties in galaxies beyond local Universe. In this work, we perform a spectral stacking analysis combining MeerKAT International GigaHertz Tiered Extragalactic Exploration and COSMOS H Large Extra-galactic Survey surveys field derive robust –stellar mass relation at z ≈ 0.36. particular, by thousands star-forming subdivided into stellar bins, optimize...
ABSTRACT We present the first measurement of H i mass star-forming galaxies in different large scale structure environments from a blind survey at z ∼ 0.37. In particular, we carry out spectral line stacking analysis considering 2875 spectra colour-selected undetected 0.23 < 0.49 COSMOS field, extracted MIGHTEE-H Early Science data cubes, acquired with MeerKAT radio telescope. stack belonging to subsamples depending on three definitions large-scale environment: local galaxy...
Near- to mid-infrared observations (from Spitzer and JWST) have revealed a hidden population of galaxies at redshift $z=3$--$6$ called optically dark objects, which are believed be massive dusty star-formers. They contribute substantially the cosmic star-formation rate (SFR) density $z (up $30$--$40<!PCT!>$). While sources widely recognized as significant component stellar mass function, history their assembly (and evolution interstellar medium) remains unexplored. However, they...
ABSTRACT We present the discovery of most distant OH megamaser (OHM) to be observed in main lines, using data from MeerKAT International Giga-Hertz Tiered Extragalactic Exploration (MIGHTEE) survey. At a newly measured redshift z = 0.7092, system has strong emission both 1665 MHz (L ≈ 2500 L⊙) and 1667 4.5 × 104 transitions, with narrow broad components. interpret line as high-velocity-dispersion component transition, velocity v ∼ 330 km s−1 respect systemic velocity. The host galaxy stellar...
The MIGHTEE survey utilises the South African MeerKAT radio telescope to observe four extragalactic deep fields, with aim of advancing our understanding formation and evolution galaxies across cosmic time. MIGHTEE's frequency coverage encompasses $\textrm{H}\scriptstyle\mathrm{I}$ line a redshift z $\simeq$ 0.58, OH megamasers 0.9. We present MIGHTEE-$\textrm{H}\scriptstyle\mathrm{I}$ imaging products for COSMOS field, using total 94.2 h on-target close-packed mosaic 15 individual pointings....
We present the first measurement of HI mass star-forming galaxies in different large scale structure environments from a blind survey at $z\sim 0.37$. In particular, we carry out spectral line stacking analysis considering $2875$ spectra colour-selected undetected $0.23 < z 0.49$ COSMOS field, extracted MIGHTEE-HI Early Science datacubes, acquired with MeerKAT radio telescope. stack belonging to subsamples depending on three definitions environment: local galaxy overdensity, position inside...
Stellar bars are common morphological structures in the local Universe; according to optical and NIR surveys, they present about two-thirds of disc galaxies. These elongated also believed play a crucial role secular evolutionary processes, because able efficiently redistribute gas, stars, angular momentum within their hosts, although it remains unclear as whether enhance or suppress star formation. A useful tool investigate this ambiguity is main sequence (MS) relation, which tightly links...
Context. Stellar bars are common morphological structures in the local Universe; according to optical and NIR surveys, they present about two-thirds of disc galaxies. These elongated also believed play a crucial role secular evolutionary processes, because able efficiently redistribute gas, stars, angular momentum within their hosts, although it remains unclear as whether enhance or suppress star formation. A useful tool investigate this ambiguity is main sequence (MS) relation, which...
The main sequence (MS) of star-forming galaxies (SFGs) is the tight relation between galaxy stellar mass and its star formation rate (SFR) was observed up to z ~ 6. MS can be used as a reference for understanding differences among galaxies, characterised by different rates production (starbursts, SFGs, passive galaxies), those inside made components (bulge, disk, halo). To investigate peculiar features found in our sample we focus here on their history (SFH). We performed spectral energy...
Context. The main sequence (MS) of star-forming galaxies (SFGs) is the tight relation between galaxy stellar mass ( M ⋆ ) and its star formation rate (SFR) was observed up to z ∼ 6. MS can be used as a reference for understanding differences among galaxies, which are characterised by different rates production (starbursts, SFGs, passive galaxies), those inside that made components (bulge, disk, halo). To investigate peculiar features found in our sample more depth, we focus here on their...
Near- to mid-Infrared observations (from Spitzer and JWST) have revealed a hidden population of galaxies at redshift z=3-6, called optically-dark objects, which are believed be massive dusty star-formers. While sources widely recognized as significant component the stellar mass function, history their assembly remains unexplored. However, they thought progenitors more early-type found in present-day groups clusters. It is thus important examine possible connection between dark merging...
We present the discovery of most distant OH megamaser to be observed in main lines, using data from MeerKAT International Giga-Hertz Tiered Extragalactic Exploration (MIGHTEE) survey. At a newly measured redshift $z = 0.7092$, system has strong emission both 1665MHz ($L \approx 2500$ L$_{\odot}$) and 1667 MHz 4.5\times10^4$ transitions, with narrow broad components. interpret line as high-velocity-dispersion component transition, velocity $v \sim 330$km s$^{-1}$ respect systemic velocity....