A5061217737- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Scientific Research and Discoveries
- Astronomical Observations and Instrumentation
- Astro and Planetary Science
- Cosmology and Gravitation Theories
- Geophysics and Gravity Measurements
- Remote Sensing in Agriculture
- Astrophysics and Star Formation Studies
- Geomagnetism and Paleomagnetism Studies
- CCD and CMOS Imaging Sensors
- Plant Water Relations and Carbon Dynamics
- Gaussian Processes and Bayesian Inference
- Solar and Space Plasma Dynamics
- Impact of Light on Environment and Health
- Planetary Science and Exploration
- Spectroscopy and Laser Applications
- Astrophysical Phenomena and Observations
- Radio Astronomy Observations and Technology
- Pulsars and Gravitational Waves Research
- History and Developments in Astronomy
- Advanced Vision and Imaging
- Atmospheric and Environmental Gas Dynamics
Osservatorio Astrofisico di Torino
2014-2024
Sahyadri Hospital
2024
National Institute for Astrophysics
2009-2021
Osservatorio Astronomico di Padova
2021
University of Bologna
2018
Max Planck Society
2018
Institute for Space Astrophysics and Planetology
2009-2014
Lawrence Berkeley National Laboratory
2012
Laboratoire d’Astrophysique de Marseille
2007-2011
Max Planck Institute for Extraterrestrial Physics
2010
We explore the inter-relationships between mass, star-formation rate and environment in SDSS, zCOSMOS other surveys. The differential effects of mass are completely separable to z ~ 1, indicating that two distinct processes operating, "mass-quenching" "environment-quenching". Environment-quenching, at fixed over-density, evidently does not change with epoch suggesting it occurs as large-scale structure develops Universe. observed constancy mass-function shape for star-forming galaxies,...
Gaia Data Release 2 (Gaia DR2) contains results for 1693 million sources in the magnitude range 3 to 21 based on observations collected by European Space Agency satellite during first 22 months of its operational phase. We describe input data, models, and processing used astrometric content DR2, validation these performed within astrometry task. Some 320 billion centroid positions from pre-processed CCD were estimate five parameters (positions, parallaxes, proper motions) 1332 sources,...
Gaia Early Data Release 3 (Gaia EDR3) contains results for 1.812 billion sources in the magnitude range G = to 21 based on observations collected by European Space Agency satellite during first 34 months of its operational phase. We describe input data, models, and processing used astrometric content EDR3, as well validation these performed within astrometry task. The broadly followed same procedures DR2, but with significant improvements modelling observations. For time data processing,...
Gaia Data Release 1 (Gaia DR1) contains astrometric results for more than billion stars brighter magnitude 20.7 based on observations collected by the satellite during first 14 months of its operational phase. We give a brief overview content data release and model assumptions, processing, validation results. For in common with Hipparcos Tycho-2 catalogues, complete single-star solutions are obtained incorporating positional information from earlier catalogues. other only their positions...
We present spectroscopic redshifts of a large sample galaxies with IAB < 22.5 in the COSMOS field, measured from spectra 10,644 objects that have been obtained first two years observations zCOSMOS-bright redshift survey. These include statistically complete subset 10,109 objects. The average accuracy individual is 110 km s−1, independent redshift. reliability described by Confidence Class has empirically calibrated through repeat over 600 galaxies. There very good agreement between and...
We present the galaxy stellar mass function (GSMF) to redshift z ≃ 1, based on analysis of about 8500 galaxies with I < 22.5 (AB mag) over 1.4 deg2, which are part zCOSMOS-bright 10k spectroscopic sample. investigate total GSMF, as well contributions early- and late-type (ETGs LTGs, respectively), defined by different criteria (broad-band spectral energy distribution, morphology, properties, or star formation activities). unveil a galaxybimodality in global whose shape is more accurately...
We describe the construction and general features of VIPERS, VIMOS Public Extragalactic Redshift Survey. This `Large Programme' has been using ESO VLT with aim building a spectroscopic sample ~100,000 galaxies i_{AB}<22.5 0.5
We present in this paper the general real- and redshift-space clustering properties of galaxies as measured first data release VIPERS survey. is a large redshift survey designed to probe distant Universe its large-scale structure at 0.5 < z 1.2. describe analysis global sample discuss completeness associated corrections. This allows us measure galaxy with an unprecedented accuracy these redshifts. From distortions observed pattern we provide measurement growth rate = 0.8: f\sigma_8 0.47 +/-...
We produce a clean and well-characterised catalogue of objects within 100\,pc the Sun from \G\ Early Data Release 3. characterise through comparisons to full data release, external catalogues, simulations. carry out first analysis science that is possible with this sample demonstrate its potential best practices for use. The selection used selected training sets, machine-learning procedures, astrometric quantities, solution quality indicators determine probability reliable. set construction...
We present the first Public Data Release (PDR-1) of VIMOS Extragalactic Survey (VIPERS). It comprises 57 204 spectroscopic measurements together with all additional information necessary for optimal scientific exploitation data, in particular associated photometric and quantification survey completeness. VIPERS is an ESO Large Programme designed to build a sample ' 100 000 galaxies iAB < 22.5 0.5 z 1.5 high sampling rate (~45%). The targets are selected from CFHTLS-Wide five-band catalogues...
We present the full public data release (PDR-2) of VIMOS Public Extragalactic Redshift Survey (VIPERS), performed at ESO VLT. redshifts, spectra, CFHTLS magnitudes and ancillary information (as masks weights) for a complete sample 86 775 galaxies (plus 4732 other objects, including stars serendipitous galaxies); we also include their photometrically-selected parent catalogue. The is magnitude limited to i AB ≤ 22.5, with an additional colour-colour pre-selection devised as exclude z <...
We present measurements of the growth rate cosmological structure from modelling anisotropic galaxy clustering measured in final data release VIPERS survey. The analysis is carried out configuration space and based on first two even multipole moments auto-correlation function, redshift bins spanning range $0.5 < z 1.2$. provide robust cosmology-independent corrections for angular selection allowing recovery underlying amplitude at percent level down to Mpc scale. discuss several improvements...
In the last 15 years different ground-based spectroscopic surveys have been started (and completed) with general aim of delivering stellar parameters and elemental abundances for large samples Galactic stars, complementing Gaia astrometry. Among those surveys, Gaia-ESO Public Spectroscopic Survey (GES), only one performed on a 8m class telescope, was designed to target 100,000 stars using FLAMES ESO VLT (both Giraffe UVES spectrographs), covering all Milky Way populations, special focus open...
Context. The Gaia-ESO Public Spectroscopic Survey is an ambitious project designed to obtain astrophysical parameters and elemental abundances for 100 000 stars, including large representative samples of the stellar populations in Galaxy, a well-defined sample 60 (plus 20 archive) open clusters. We provide internally consistent results calibrated on benchmark stars star clusters, extending across very wide range ages. This provides legacy data set intrinsic value, equally wide-ranging...
We study the impact of environment on evolution galaxies in zCOSMOS 10k sample redshift range 0.1<z<1.0 over an area ~1.5 deg2. The considered secure spectroscopic redshifts contains about 8500 galaxies, with their stellar masses estimated by SED fitting multiwavelength optical to NIR photometry. galaxy mass function (GSMF) high and low density regions provides a tool assembly different environments; moreover, contributions GSMF from types, as defined SEDs morphologies, can be quantified. At...
For more than two decades we have known that galaxy morphological segregation is present in the Local Universe. It important to see how this relation evolves with cosmic time. To investigate assembly took place time, explore evolution of morphology-density up redshift z~1 using about 10000 galaxies drawn from zCOSMOS Galaxy Redshift Survey. Taking advantage accurate HST/ACS morphologies COSMOS survey, well-characterised 3D environment, and a large sample spectroscopic redshift, want study...
We present a detailed investigation of the changing relationship between galaxies and dark matter haloes they inhabit from z~1.2 to day. do this by comparing precise galaxy clustering measurements over 133 deg2 "Wide" component CFHT Legacy Survey (CFHTLS) with predictions an analytic HOD model where number in each halo depends only on mass. Starting parent catalogue ~ 3x10^6 at i'_AB < 22.5 we use accurate photometric redshifts calibrated using 10^4 spectroscopic create series...