A5056456679- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Cosmology and Gravitation Theories
- Astrophysical Phenomena and Observations
- Scientific Research and Discoveries
- Adaptive optics and wavefront sensing
- Astrophysics and Cosmic Phenomena
- CCD and CMOS Imaging Sensors
- Radio Astronomy Observations and Technology
- Remote Sensing in Agriculture
- History and Developments in Astronomy
- Calibration and Measurement Techniques
- Dark Matter and Cosmic Phenomena
- Astrophysics and Star Formation Studies
- Impact of Light on Environment and Health
- Geophysics and Gravity Measurements
- Gaussian Processes and Bayesian Inference
- Spectroscopy and Chemometric Analyses
- Spectroscopy and Laser Applications
- Statistical and numerical algorithms
- Theology and Canon Law Studies
- Particle physics theoretical and experimental studies
University of Milan
2016-2025
Brera Astronomical Observatory
2016-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2018-2024
Institut d'Astrophysique de Paris
2024
European Space Astronomy Centre
2012-2024
University of Zurich
2023
Institut de Recherche sur les Lois Fondamentales de l'Univers
2020
CEA Paris-Saclay
2020
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2012-2020
Mylan (Switzerland)
2017-2019
The Cosmic Evolution Survey (COSMOS) is designed to probe the correlated evolution of galaxies, star formation, active galactic nuclei (AGN) and dark matter (DM) with large-scale structure (LSS) over redshift range z $> 0.5 $ 6. survey includes multi-wavelength imaging spectroscopy from X-ray radio wavelengths covering a 2 $\sq$°area, including HST imaging. Given very high sensitivity resolution these datasets, COSMOS also provides unprecedented samples objects at greatly reduced cosmic...
We present photometric redshifts for an uniquely large and deep sample of 522286 objects with i'_{AB}<25 in the Canada-France Legacy Survey ``Deep Survey'' fields, which cover a total effective area 3.2 deg^2. use 3241 spectroscopic 0<z<5 from VIMOS VLT Deep as calibration to derive these redshifts. devise robust method removes systematic trends significantly reduces fraction catastrophic errors. our unique detailed assessment robustness redshift sample. For selected at i'_{AB}<24, we reach...
zCOSMOS is a large-redshift survey that being undertaken in the COSMOS field using 600 hr of observation with VIMOS spectrograph on 8 m VLT. The designed to characterize environments galaxies from 100 kpc scales galaxy groups up Mpc scale cosmic web and produce diagnostic information active galactic nuclei. consists two parts: (1) zCOSMOS-bright, magnitude-limited I-band IAB < 22.5 sample about 20,000 0.1 z 1.2 covering whole 1.7 deg2 ACS field, for which parameters at ~ 0.7 are be directly...
We present imaging data and photometry for the COSMOS survey in 15 photometric bands between 0.3 2.4 μm. These include taken on Subaru 8.3 m telescope, KPNO CTIO 4 telescopes, CFHT 3.6 telescope. Special techniques are used to ensure that relative calibration is better than 1% across field of view. The absolute accuracy from standard-star measurements found be 6%. corrected using galaxy spectra, providing colors accurate 2% or better. Stellar counts agree well with expected values. Finally,...
We present the catalogue of REFLEX Cluster Survey providing information on X-ray properties, redshifts, and some identification details clusters in sample. The describes a statistically complete flux-limited sample 447 galaxy above an flux 3 10-12 erg s-1 cm-2 (0.1 to 2.4 keV) area 4.24 ster southern sky. cluster candidates were first selected by their emission ROSAT-All Sky subsequently spectroscopically identified frame ESO key programme. Previously described tests have shown that is more...
This paper presents the ``First Epoch'' sample from VIMOS VLT Deep Survey (VVDS). The VVDS goals, observations, data reduction with VIPGI, and redshift measurement KBRED are discussed. Data have been obtained VIsible Multi Object Spectrograph (VIMOS) on ESO-VLT UT3, allowing to observe ~600 slits simultaneously at R~230. A total of 11564 objects observed in VVDS-02h VVDS-CDFS fields over a area 0.61deg^2, selected solely basis apparent magnitude 17.5 <=I_{AB} <=24. covers range 0 <...
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...
The Cosmic Evolution Survey (COSMOS) was initiated with an extensive allocation (590 orbits in Cycles 12-13) using the Hubble Space Telescope (HST) for high resolution imaging. Here we review characteristics of HST imaging Advanced Camera Surveys (ACS) and parallel observations NICMOS WFPC2. A square field (1.8$\sq$\deg) has been imaged single-orbit ACS I-F814W exposures 50% completeness sources 0.5\arcsec diameter at I$_{AB} $ = 26.0 mag. is a key part COSMOS survey, providing very...
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...
The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8 Ms, Chandra} program that has imaged the central 0.5 sq.deg of field (centered at 10h, +02deg) with an effective exposure ~160ksec, and outer 0.4sq.deg. area ~80ksec. limiting source detection depths are 1.9e-16 erg cm(-2) s(-1) in Soft (0.5-2 keV) band, 7.3e(-16) cm^-2 s^-1 Hard (2-10 5.7e(-16) Full (0.5-10 band. Here we describe strategy, design execution C-COSMOS survey, present catalog 1761 point sources detected probability being...
We present deep optical imaging observations of 2 square degree area, covered by the Cosmic Evolution Survey (COSMOS), made prime-focus camera (Supreme-Cam) on 8.2 m Subaru Telescope. Observations were done in six broadband [B (4459.7 Å), g' (4723.1 V (5483.8 r' (6213.0 i' (7640.8 z' (8855.0 Å)] and one narrowband (NB816) filters. A total 106 galaxies detected to ~ 26.5 mag. These data, combined with at u* K-band are used construct photometric catalogs for COSMOS, measure their redshifts,...
The Euclid space telescope will measure the shapes and redshifts of galaxies to reconstruct expansion history Universe growth cosmic structures. Estimation expected performance experiment, in terms predicted constraints on cosmological parameters, has so far relied different methodologies numerical implementations, developed for observational probes their combination. In this paper we present validated forecasts, that combine both theoretical expertise probes. This is presented provide...
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 +/-...
ABSTRACT We investigate if the discrepancy between estimates of total baryon mass fraction obtained from observations cosmic microwave background (CMB) and galaxy groups/clusters persists when a large sample groups is considered. To this purpose, 91 candidate X-ray groups/poor clusters at redshift 0.1 ⩽ z 1 are selected COSMOS 2 deg survey, based only on their luminosity extent. This complemented by 27 nearby with robust, analogous determination stellar inside R 500 . The 118 spans range in...
Euclid is an ESA mission designed to constrain the properties of dark energy and gravity via weak gravitational lensing galaxy clustering. It will carry out a wide area imaging spectroscopy survey (EWS) in visible near-infrared, covering roughly 15,000 square degrees extragalactic sky on six years. The wide-field telescope instruments are optimized for pristine PSF reduced straylight, producing very crisp images. This paper presents building reference survey: sequence pointings EWS, Deep...