Publications (171)
The evolution of galaxies and clusters at high spatial resolution with AXIS
H. R. Russell, L. A. Lopez, S. W. Allen +25
Stellar and black hole feedback heat and disperse surrounding cold gas clouds, launching gas flows off circumnuclear and galactic disks and producing a dynamic interstellar medium.…
The growth and evolution of super massive black holes
S. Murray, R. Gilli, P. Tozzi +19
We discuss the central role played by X-ray studies to reconstruct the past history of formation and evolution of supermassive Black Holes (BHs), and the role they played in shapin…
Magnifying the early episodes of star formation: super star clusters at cosmological distances
E. Vanzella, M. Castellano, M. Meneghetti +27
We study the spectrophotometric properties of a highly magnified (μ~40-70) pair of stellar systems identified at z=3.2222 behind the Hubble Frontier Field galaxy cluster MACS~J041…
Intra Cluster Light properties in the CLASH-VLT cluster MACS J1206.2-0847
V. Presotto, M. Girardi, M. Nonino +46
We aim at constraining the assembly history of clusters by studying the intra cluster light (ICL) properties, estimating its contribution to the fraction of baryons in stars, f*, a…
ICM properties and AGN distribution in high-z RCS clusters
A. Bignamini, P. Tozzi, S. Borgani +2
Here we discuss the X-ray properties of clusters of galaxies optically selected in the Red-Sequence Cluster Survey (RCS) observed with the Chandra satellite, at redshifts 0.6 < z <…
Sub-mm detection of a high redshift Type 2 QSO
V. Mainieri, D. Rigopoulou, I. Lehmann +6
We report on the first SCUBA detection of a Type 2 QSO at z=3.660 in the Chandra Deep Field South. This source is X-ray absorbed, shows only narrow emission lines in the optical sp…
CLASH-VLT: Galaxy cluster MACS J0329-0211 and its surroundings using galaxies as kinematic tracers
M. Girardi, W. Boschin, A. Mercurio +9
We aim to gain new insights into the controversial dynamical status of MACS J0329-0211 (MACS0329), a massive cluster at z=0.4503, with a new analysis using a large sample of member…
The Chandra Deep Field South/GOODS survey. Optically faint X-ray sources
V. Mainieri, P. Rosati, P. Tozzi +11
We provide important new constraints on the nature and redshift distribution of optically faint (R>25) X-ray sources in the Chandra Deep Field South Survey. We show that we can der…
Diffuse Baryons in Groups and Clusters of Galaxies
A. Cavaliere, N. Menci, P. Tozzi
To predict the X-ray observables associated to the diffuse baryons in clusters of galaxies, we develop a new physical approach to model such a hot intra-cluster plasma. Such approa…
CLASH-VLT: Dissecting the Frontier Fields Galaxy Cluster MACS J0416.1-2403 with Spectra of Member Galaxies
I. Balestra, A. Mercurio, B. Sartoris +33
We present VIMOS-VLT spectroscopy of the Frontier Fields cluster MACS~J0416.1-2403 (z=0.397). Taken as part of the CLASH-VLT survey, the large spectroscopic campaign provided more…
A Classic Type 2 QSO
C. Norman, G. Hasinger, R. Giacconi +14
In the Chandra Deep Field South 1Msec exposure we have found, at redshift 3.700 +- 0.005, the most distant Type 2 AGN ever detected. It is the source with the hardest X-ray spectru…
Simulating the WFXT sky
P. Tozzi, J. Santos, H. Yu +9
We investigate the scientific impact of the Wide Field X-ray Telescope mission. We present simulated images and spectra of X-ray sources as observed from the three surveys planned…
The XMM deep survey in the CDFS IV. Candidate Compton-thick AGN
I. Georgantopoulos, A. Comastri, C. Vignali +15
The Chandra Deep Field is the region of the sky with the highest concentration of X-ray data available: 4Ms of Chandra and 3Ms of XMM data, allowing excellent quality spectra to be…
The AGN content of deep radio surveys and radio emission in radio-quiet AGN. Why every astronomer should care about deep radio fields
P. Padovani, M. Bonzini, N. Miller +5
We present our very recent results on the sub-mJy radio source populations at 1.4 GHz based on the Extended Chandra Deep Field South VLA survey, which reaches ~ 30 μJy, with detai…
HST Imaging in the Chandra Deep Field South: I. Multiple AGN Populations
E. J. Schreier, A. M. Koekemoer, N. A. Grogin +9
We present preliminary results from imaging three HST/WFPC2 fields in V and I within the Chandra Deep Field South (CDFS). HST's sensitivity and resolution are sufficient to reveal…
The XMM deep survey in the CDFS XI. X-ray properties of 185 bright sources
K. Iwasawa, A. Comastri, C. Vignali +11
We present X-ray spectra of 185 bright sources detected in the XMM-Newton deep survey of the Chandra Deep Field South, combining the three EPIC cameras. The 2-10 keV flux limit of…
X-ray properties of galaxy clusters and groups from a cosmological hydrodynamical simulation
S. Borgani, G. Murante, V. Springel +6
We present results on the X-ray properties of clusters and groups of galaxies, extracted from a large hydrodynamical simulation. We used the GADGET code to simulate a LambdaCDM mod…
Evolution at z>0.5 of the X-ray properties of simulated galaxy clusters: comparison with the observational constraints
S. Ettori, S. Borgani, L. Moscardini +7
(ABRIDGED) We analyze the X-ray properties of a sample of local and high redshift galaxy clusters extracted from a large cosmological hydrodynamical simulation. This simulation has…
The Intracluster Medium in z > 1 Galaxy Clusters
S. A. Stanford, B. Holden, P. Rosati +4
The Chandra X-ray Observatory was used to obtain a 190 ks image of three high redshift galaxy clusters in one observation. The results of our analysis of these data are reported fo…
VLA survey of the CDFS: the nature of faint radio sources
P. Tozzi, K. Kellermann, E. Fomalont +6
We present the multiwavelength properties of 266 cataloged radio sources identified with 20 and 6 cm VLA deep observations of the CDFS at a flux density limit of 42 μJy at the fie…
Magnetic fields at the dawn of structure formation I. The CARLA J1510+5958 proto-cluster
A. Pagliotta, A. Bonafede, C. Stuardi +4
Magnetic fields are a fundamental ingredient of the Universe, influencing the formation and evolution of cosmic structures. While magnetic fields in local galaxy clusters have been…
MAGNUM survey: A MUSE-Chandra resolved view on ionized outflows and photoionization in the Seyfert galaxy NGC 1365
G. Venturi, E. Nardini, A. Marconi +24
Ionized outflows, revealed by broad asymmetric wings of the [OIII] line, are commonly observed in AGN but the low intrinsic spatial resolution of observations has generally prevent…
Chandra and XMM-Newton Observations of RDCS1252.9-2927, A Massive Cluster at z=1.24
P. Rosati, P. Tozzi, S. Ettori +10
We present deep Chandra and XMM obervations of the galaxy cluster RDCS1252.9-2927, which was selected from the ROSAT Deep Cluster Survey (RDCS) and confirmed by extensive spectrosc…
Mass distribution in the core of MACS J1206: robust modeling from an exceptionally large sample of central multiple images
G. B. Caminha, C. Grillo, P. Rosati +24
We present a new strong lensing analysis of the galaxy cluster MACS J1206.2-0847 (MACS 1206), at z=0.44, using deep spectroscopy from CLASH-VLT and VLT/MUSE archival data in combin…
The properties of X-ray selected AGN in protoclusters pinpointed by Enormous Lya Nebulae
A. Traina, F. Vito, F. Arrigoni-Battaia +11
Protoclusters of galaxies are overdense regions of the Universe characterized by large gas reservoirs. Such environments make them perfect laboratories to investigate galaxy-AGN co…
A Chandra archival study of the temperature and metal abundance profiles in hot Galaxy Clusters at 0.1 < z < 0.3
A. Baldi, S. Ettori, P. Mazzotta +2
We present the analysis of the temperature and metallicity profiles of 12 galaxy clusters in the redshift range 0.1--0.3 selected from the Chandra archive with at least ~20,000 net…
Wide Field X-ray Telescope: Mission Overview
P. Rosati, S. Borgani, R. Gilli +9
The Wide Field X-Ray Telescope (WFXT) is a medium-class mission designed to be 2-orders-of-magnitude more sensitive than any previous or planned X-ray mission for large area survey…
Constraining the cosmological parameters with the gas mass fraction in local and z>0.7 Galaxy Clusters
S. Ettori, P. Tozzi, P. Rosati
We present a study of the baryonic fraction in galaxy clusters aimed at constraining the cosmological parameters Omega_m, Omega_Lambda and the ratio between the pressure and densit…
Tracing the Mass-Dependent Star Formation History of Late-Type Galaxies using X-ray Emission: Results from the Chandra Deep Fields
B. D. Lehmer, W. N. Brandt, D. M. Alexander +11
We report on the X-ray evolution over the last ~9 Gyr of cosmic history (i.e., since z = 1.4) of late-type galaxy populations in the Chandra Deep Field-North and Extended Chandra D…
The X-ray Halo Scaling Relations of Supermassive Black Holes
M. Gaspari, D. Eckert, S. Ettori +13
We carry out a comprehensive Bayesian correlation analysis between hot halos and direct masses of supermassive black holes (SMBHs), by retrieving the X-ray plasma properties (tempe…
Near-IR bright galaxies at z~2. Entering the spheroid formation epoch ?
E. Daddi, A. Cimatti, A. Renzini +11
Spectroscopic redshifts have been measured for 9 K-band luminous galaxies at 1.7 < z < 2.3, selected with Ks < 20 in the "K20 survey" region of the Great Observatories Origins Deep…
HST Imaging in the Chandra Deep Field South: II. WFPC2 Observations of an X-Ray Flux-Limited Sample from the 1 Msec Chandra Catalog
A. M. Koekemoer, N. A. Grogin, E. J. Schreier +10
We present HST/WFPC2 observations of a well-defined sample of 40 X-ray sources with X-ray fluxes above the detection threshold of the full 1 Msec Chandra Deep Field South (CDFS). T…
A Puzzling X-Ray Source Found in the chandra Deep Field South
J. Wang, T. Yaqoob, G. Szokoly +9
In this letter we report the detection of an extremely strong X-ray emission line in the 940ks chandra ACIS-I spectrum of CXO CDFS J033225.3-274219. The source was identified as a…
The VLA Survey of the Chandra Deep Field South. II. Identification and host galaxy properties of submillijansky sources
V. Mainieri, K. I. Kellermann, E. B. Fomalont +10
We present the optical and infrared identifications of the 266 radio sources detected at 20 cm with the Very Large Array in the Chandra Deep Field South (Kellermann et al. 2008). U…
Dust and gas content of high-redshift galaxies hosting obscured AGN in the CDF-S
Q. D'Amato, R. Gilli, C. Vignali +14
Obscured AGN represent a significant fraction of the entire AGN population, especially at high redshift (~70% at z=3--5). They are often characterized by the presence of large gas…
Hot and Cooled baryons in SPH simulations of galaxy clusters: physics and numerics
S. Borgani, K. Dolag, G. Murante +7
We discuss an extended set of Tree+SPH simulations of galaxy clusters, with the goal of investigating the interplay between numerical resolution effects and star-formation/feedback…
Chandra deep observation of XDCP J0044.0-2033, a massive galaxy cluster at z>1.5
P. Tozzi, J. S. Santos, M. J. Jee +11
We report the analysis of the Chandra observation of XDCP J0044.0-2033, a massive, distant (z=1.579) galaxy cluster discovered in the XDCP survey. The total exposure time of 380 ks…
Testing Omega0 with X-ray Clusters: a Physical Approach
P. Tozzi
The X-ray emission from clusters of galaxies is one of the most pursued observational probe to investigate the distribution of dark matter and the related density parameter Omega0.…
The Swift X-ray Telescope Cluster Survey II. X-ray spectral analysis
P. Tozzi, A. Moretti, E. Tundo +7
(Abridged) We present a spectral analysis of a new, flux-limited sample of 72 X-ray selected clusters of galaxies identified with the X-ray Telescope (XRT) on board the Swift satel…
Pre-heating the ICM in high resolution simulations: the effect on the gas entropy
S. Borgani, F. Governato, J. Wadsley +5
We present results from high-resolution Tree+SPH simulations of galaxy clusters and groups, aimed at studying the effect of non-gravitational heating on the entropy of the ICM. We…
Hot Gas in Clusters of Galaxies: the Punctuated Equilibria Model
A. Cavaliere, N. Menci, P. Tozzi
We develop a model to describe the evolution of the intra-cluster X-ray emitting baryons, as they are included in the dark matter potential wells of galaxy clusters evolving throug…
The Evolution of Normal Galaxy X-ray Emission Through Cosmic History: Constraints from the 6 Ms Chandra Deep Field-South
B. D. Lehmer, A. R. Basu-Zych, S. Mineo +17
We present measurements of the evolution of normal-galaxy X-ray emission from 0-7 using local galaxies and galaxy samples in the 6 Ms Chandra Deep Field-South (CDF-S) s…
A Compton-thick AGN at z~5 in the 4 Ms Chandra Deep Field South
R. Gilli, J. Su, C. Norman +13
We report the discovery of a Compton-thick Active Galactic Nucleus (AGN) at z=4.76 in the 4 Ms Chandra Deep Field South. This object was selected as a V-band dropout in HST/ACS ima…
Entropy amplification from energy feedback in simulated galaxy groups and clusters
S. Borgani, A. Finoguenov, S. T. Kay +4
We use hydrodynamical simulations of galaxy clusters and groups to study the effect of pre-heating on the entropy structure of the ICM. Our simulations account for non-gravitationa…
Constraints on the Lyman continuum escape fraction for faint star forming galaxies
J. Japelj, E. Vanzella, F. Fontanot +6
Star forming galaxies have long been considered the dominant sources of the cosmic ultraviolet background radiation at early epochs. However, observing and characterizing the galax…
The VLA Survey of the Chandra Deep Field South. V. Evolution and Luminosity Functions of sub-mJy radio sources and the issue of radio emission in radio-quiet AGN
P. Padovani, N. Miller, K. I. Kellermann +3
We present the evolutionary properties and luminosity functions of the radio sources belonging to the Chandra Deep Field South VLA survey, which reaches a flux density limit at 1.4…
The Diffuse Light in Simulations of Galaxy Clusters
G. Murante, M. Arnaboldi, O. Gerhard +8
We study the properties of the diffuse light in galaxy clusters forming in a large hydrodynamical cosmological simulation of the Lambda-CDM cosmology. The simulation includes a mod…
The Chandra Deep Field South: the 1 Million Second
P. Rosati, P. Tozzi, R. Giacconi +16
We present the main results from our 940 ksec observation of the Chandra Deep Field South (CDFS), using the source catalog described in an accompanying paper (Giacconi et al. 2001)…
The Luminosity-Temperature Relation for Groups and Clusters of Galaxies
A. Cavaliere, N. Menci, P. Tozzi
We model the effects of shocks on the diffuse, X-ray emitting baryons in clusters of galaxies. Shocks separate the infalling from the inner gas nearly at equilibrium, and dominate…
The Chandra Deep Field South: Optical Spectroscopy I
G. P. Szokoly, J. Bergeron, G. Hasinger +15
We present the results of our spectroscopic follow-up program of the X-ray sources detected in the 942 ks exposure of the Chandra Deep Field South (CDFS). 288 possible counterparts…
The Assembly History of Field Spheroidals: Evolution of Mass-to-light Ratios and Signatures of Recent Star Formation
T. Treu, R. S. Ellis, T. X. Liao +6
We present a comprehensive catalog of high signal-to-noise spectra obtained with the DEIMOS spectrograph on the Keck II telescope for a sample of F850LP<22.43 (AB) field spheroidal…
The universal shape of the X-ray variability power spectrum of AGN up to
M. Paolillo, I. E. Papadakis, W. N. Brandt +12
We study the ensemble X-ray variability properties of Active Galactic Nuclei (AGN) over a large range of timescales (20 ks 14 yrs), redshift (), lu…
The MAGNUM survey: different gas properties in the outflowing and disk components in nearby active galaxies with MUSE
M. Mingozzi, G. Cresci, G. Venturi +17
We investigated the interstellar medium properties of the disc and outflowing gas in the central regions of nine nearby Seyfert galaxies, all characterised by prominent outflows. T…
VLT and ACS observations of RDCS J1252.9-2927: dynamical structure and galaxy populations in a massive cluster at z=1.237
R. Demarco, P. Rosati, C. Lidman +26
We present results from an extensive spectroscopic survey, carried out with VLT FORS, and from an extensive multiwavelength imaging data set from the HST Advanced Camera for Survey…
The Chandra Deep Field-South Survey: 4 Ms Source Catalogs
Y. Q. Xue, B. Luo, W. N. Brandt +22
[abridged] We present point-source catalogs for the 4Ms Chandra Deep Field-South (CDF-S), which is the deepest Chandra survey to date and covers an area of 464.5 arcmin^2. We provi…
Feeding and feedback processes in the Spiderweb proto-intracluster medium
M. Lepore, L. Di Mascolo, P. Tozzi +15
We present the detailed analysis of the thermal, diffuse emission of the proto-intracluster medium (ICM) detected in the halo of the Spiderweb Galaxy at z=2.16, within a radius of…
The Radio - X-ray relation as a star formation indicator: Results from the VLA--E-CDFS Survey
S. Vattakunnel, P. Tozzi, F. Matteucci +10
In order to trace the instantaneous star formation rate at high redshift, and hence help understanding the relation between the different emission mechanisms related to star format…
A VLT spectroscopic survey of RX J0152.7-1357, a forming cluster of galaxies at z=0.837
R. Demarco, P. Rosati, C. Lidman +12
We present the results of an extensive spectroscopic survey of RX J0152.7-1357, one of the most massive distant clusters of galaxies known. Multi-object spectroscopy, carried out w…
Iron abundance in the ICM at high redshift
P. Tozzi, P. Rosati, S. Ettori +3
We present the analysis of the X-ray spectra of 18 distant clusters of galaxies with redshift 0.3 < z < 1.3. Most of them were observed with the Chandra satellite in long exposures…
Moderate Temperature Clusters of Galaxies from the RDCS and the High Redshift Luminosity-Temperature Relation
B. P. Holden, S. A. Stanford, G. K. Squires +4
We present our discovery observations and analysis of RDCS1317+2911, z = 0.805, and RDCS1350+6007, z= 0.804, two clusters of galaxies identified through X-ray emission in the ROSAT…
New strong lensing modelling of SDSS J2222+2745 enhanced with VLT/MUSE spectroscopy
A. Acebron, C. Grillo, P. Bergamini +8
SDSS J2222+2745, at z = 0.489, is one of the few currently known lens clusters with multiple images of a background (z = 2.801) quasar with measured time delays. We combine imaging…
Paving the way for the JWST: witnessing globular cluster formation at z>3
E. Vanzella, F. Calura, M. Meneghetti +17
We report on five compact, extremely young (<10Myr) and blue (β_UV<-2.5, F_λ=λ^β) objects observed with VLT/MUSE at redshift 3.1169, 3.235, in addition to three objects at z=6.…
Starbursting Brightest Cluster Galaxy: a Herschel view of the massive cluster MACS J1931.8-2634
J. S. Santos, I. Balestra, P. Tozzi +9
We investigate the dust-obscured star formation properties of the massive, X-ray selected galaxy cluster MACS J1931.8-2634 at =0.352. Using far-infrared (FIR) imaging in the ran…
The micro-Jy Radio Source Population: the VLA-CDFS View
P. Padovani, V. Mainieri, P. Tozzi +5
We analyse the 267 radio sources from our deep (flux limit of 42 microJy at the field center at 1.4 GHz) Chandra Deep Field South 1.4 and 5 GHz VLA survey. The radio population is…
Ultra-deep catalog of X-ray groups in the Extended Chandra Deep Field South
A. Finoguenov, M. Tanaka, M. Cooper +22
Ultra-deep observations of ECDF-S with Chandra and XMM-Newton enable a search for extended X-ray emission down to an unprecedented flux of ergs s cm…
The sub-mJy radio sky in the Extended Chandra Deep Field South: source population
M. Bonzini, P. Padovani, V. Mainieri +5
The sub-mJy radio population is a mixture of active systems, that is star forming galaxies (SFGs) and active galactic nuclei (AGNs). We study a sample of 883 radio sources detected…
The VLA 1.4GHz Survey of the Extended Chandra Deep Field South: First Data Release
Neal A. Miller, E. B. Fomalont, K. I. Kellermann +5
We have observed the Extended Chandra Deep Field South (E-CDF-S) using a mosaic of six deep Very Large Array (VLA) pointings at 1.4GHz. In this paper, we present the survey strateg…
Shaken Snow Globes: Kinematic Tracers of the Multiphase Condensation Cascade in Massive Galaxies, Groups, and Clusters
M. Gaspari, M. McDonald, S. L. Hamer +16
We propose a novel method to constrain turbulence and bulk motions in massive galaxies, groups and clusters, exploring both simulations and observations. As emerged in the recent p…
New XMM-Newton observation of the Phoenix cluster: properties of the cool core
P. Tozzi, F. Gastaldello, S. Molendi +9
(Abridged) We present a spectral analysis of a deep (220 ks) XMM-Newton observation of the Phoenix cluster (SPT-CL J2344-4243), which we also combine with Chandra archival ACIS-I d…
The cluster gas mass fraction as a cosmological probe: a revised study
S. Ettori, A. Morandi, P. Tozzi +5
(Abriged) We present the analysis of the baryonic content of 52 X-ray luminous galaxy clusters observed with Chandra in the redshift range 0.3-1.273. We use the deprojected X-ray s…
Applying the Background-Source separation algorithm to Chandra Deep Field South data
F. Guglielmetti, H. Boehringer, R. Fischer +2
A probabilistic two-component mixture model allows one to separate the diffuse background from the celestial sources within a one-step algorithm without data censoring. The backgro…
The 500 ks Chandra observation of the z = 6.31 QSO SDSS J1030+0524
R. Nanni, R. Gilli, C. Vignali +23
We present the results from a ks Chandra observation of the QSO SDSS J1030+0524. This is the deepest X-ray observation to date of a QSO. The QSO is dete…
Properties of Galaxy Clusters: Mass and Correlation Functions
F. Governato, A. Babul, T. Quinn +4
We analyse parallel N-body simulations of three Cold Dark Matter (CDM) universes to study the abundance and clustering of galaxy clusters. The simulations cover a volume comparable…
Galaxy population properties of the massive X-ray luminous galaxy cluster XDCP J0044.0-2033 at z=1.58: red-sequence formation, massive galaxy assembly, and central star formation activity
R. Fassbender, A. Nastasi, J. S. Santos +20
We investigate various galaxy population properties of the massive X-ray luminous galaxy cluster XDCP J0044.0-2033 at z=1.58, which constitutes the most extreme matter density peak…
Understanding entropy in massive halos: The role of baryon decoupling
S. Molendi, M. Balboni, I. Bartalucci +8
The goal of the work presented in this paper is to use observed entropy profiles to infer constraints on the accretion process in massive halos. We compare entropy profiles from va…
The Extended Chandra Deep Field-South Survey. Chandra Point-Source Catalogs
B. D. Lehmer, W. N. Brandt, D. M. Alexander +17
We present Chandra point-source catalogs for the Extended Chandra Deep Field-South (E-CDF-S) survey. The E-CDF-S consists of four contiguous 250 ks Chandra observations covering an…
First Results from the X-ray and Optical Survey of the Chandra Deep Field South
R. Giacconi, P. Rosati, P. Tozzi +8
We present our first results from 130 ks of X-ray observations obtained with the Advanced CCD Imaging Spectrometer on the Chandra X-ray Observatory. We reach a flux of 2 X 10^(-16)…
CHEX-MATE: Characterization of the intra-cluster medium temperature distribution
L. Lovisari, S. Ettori, E. Rasia +23
We study the perturbations in the temperature (and density) distribution for 28 clusters selected from the CHEX-MATE sample to evaluate and characterize the level of inhomogeneitie…
X-ray spectral properties of AGN in the Chandra Deep Field South
P. Tozzi, R. Gilli, V. Mainieri +12
We present a detailed X-ray spectral analysis of the sources in the 1Ms catalog of the Chandra Deep Field South (CDFS) taking advantage of optical spectroscopy and photometric reds…
A new photometric technique for the joint selection of star-forming and passive galaxies at 1.4<z<2.5
E. Daddi, A. Cimatti, A. Renzini +5
A simple two color selection based on B-, z-, and K- band photometry is proposed for culling galaxies at 1.4<z<2.5 in K-selected samples and classifying them as star-forming or pas…
The MAGNUM survey: Positive feedback in the nuclear region of NGC 5643 suggested by MUSE
G. Cresci, A. Marconi, S. Zibetti +18
We study the ionization and kinematics of the ionized gas in the nuclear region of the barred Seyfert 2 galaxy NGC~5643 using MUSE integral field observations in the framework of t…
The MUSE Deep Lensed Field on the Hubble Frontier Field MACS~J0416
E. Vanzella, G. B. Caminha, P. Rosati +21
Context: A census of faint and tiny star forming complexes at high redshift is key to improving our understanding of reionizing sources, galaxy growth and the formation of globular…
High star cluster formation efficiency in the strongly lensed Sunburst Lyman-continuum galaxy at z=2.37
E. Vanzella, M. Castellano, P. Bergamini +16
We investigate the strongly lensed (μx10-100) Lyman continuum (LyC) galaxy, dubbed Sunburst, at z=2.37, taking advantage of a new accurate model of the lens. A characterization of…
X-ray view of a massive node of the Cosmic Web at z~3 I. An exceptional overdensity of rapidly accreting SMBHs
A. Travascio, S. Cantalupo, P. Tozzi +16
Exploring SMBH population in protoclusters offers valuable insights into how environment affects SMBH growth. However, research on AGN within these areas is still limited by the sm…
Discovery of molecular gas fueling galaxy growth in a protocluster at z=1.7
Q. D'Amato, R. Gilli, I. Prandoni +16
Based on ALMA Band 3 observations of the CO(2-1) line transition, we report the discovery of three new gas-rich (M_H2 ~ 1.5-4.8 x 10^10 M_sun, SFRs in the range ~5-100 M_sun/yr) ga…
Cosmological Constraints from the ROSAT Deep Cluster Survey
S. Borgani, P. Rosati, P. Tozzi +1
The ROSAT Deep Cluster Survey (RDCS) has provided a new large deep sample of X-ray selected galaxy clusters. Observables such as the flux number counts n(S), the redshift distribut…
Multiple AGN activity during the BCG assembly of XDCPJ0044.0-2033 at z~1.6
A. Travascio, A. Bongiorno, P. Tozzi +13
Undisturbed galaxy clusters are characterized by a massive and large elliptical galaxy at their center, i.e. the Brightest Cluster Galaxy (BCG). How these central galaxies form is…
The sub-mJy radio population of the E-CDFS: optical and infrared counterpart identification
M. Bonzini, V. Mainieri, P. Padovani +9
We study a sample of 883 sources detected in a deep Very Large Array survey at 1.4 GHz in the Extended Chandra Deep Field South. The paper focuses on the identification of their op…
Photometric Redshift of X-Ray Sources in the Chandra Deep Field South
W. Zheng, V. J. Mikles, V. Mainieri +10
Based on the photometry of 10 near-UV, optical, and near-infrared bands of the Chandra Deep Field South, we estimate the photometric redshifts for 342 X-ray sources, which constitu…
Three candidate clusters of galaxies at redshift ~1.8: the "missing link" between protoclusters and local clusters?
M. Chiaberge, A. Capetti, F. D. Macchetto +3
We present three candidate clusters of galaxies at redshifts most likely between 1.7 and 2.0, which corresponds to a fundamentally unexplored epoch of clusters evolution. The candi…
A strong lensing model of the galaxy cluster PSZ1 G311.65-18.48
G. V. Pignataro, P. Bergamini, M. Meneghetti +10
We present a strong lensing analysis of the galaxy cluster PSZ1 G311.65-18.48 (z=0.443) using multi-band observations with Hubble Space Telescope, complemented with VLT/MUSE spectr…
New Results from the X-ray and Optical Survey of the Chandra Deep Field South: The 300ks Exposure
P. Tozzi, P. Rosati, M. Nonino +15
We present results from 300 ks of X-ray observations of the Chandra Deep Field South. The field of the four combined exposures is now 0.1035 deg^2 and we reach a flux limit of 10^{…
172 ks Chandra Exposure of the LALA Boötes Field: X-ray Source Catalog
J. X. Wang, S. Malhotra, J. E. Rhoads +7
We present an analysis of a deep, 172 ks Chandra observation of the Large Area Lyman Alpha Survey (LALA) Boötes field, obtained with the Advanced CCD Imaging Spectrometer (ACIS-I)…
Multi-wavelength study of XMMU J2235.3-2557: the most massive galaxy cluster at z > 1
P. Rosati, P. Tozzi, R. Gobat +14
[Abridged] XMMU J2235.3-2557 is one of the most distant X-ray selected clusters, spectroscopically confirmed at z=1.39. We characterize the galaxy populations of passive members, t…
Inquiring into the nature of the Abell 2667 Brightest Cluster Galaxy: physical properties from MUSE
E. Iani, G. Rodighiero, J. Fritz +21
Based on HST and MUSE data, we probe the stellar and gas properties (i.e. kinematics, stellar mass, star formation rate) of the radio-loud brightest cluster galaxy (BCG) located at…
Small groups of Galaxies as Cosmological Clocks
P. Tozzi, F. Governato, A. Cavaliere
We study the formation and evolution of small groups of galaxies using new Monte Carlo simulations. These are directly based on the random walk approach to the statistics of conden…
The VLA Survey of the Chandra Deep Field South. IV. Source Population
P. Padovani, V. Mainieri, P. Tozzi +5
We present a detailed analysis of 256 radio sources from our deep (flux density limit of 42 microJy at the field centre at 1.4 GHz) Chandra Deep Field South 1.4 and 5 GHz VLA surve…
The 700 ks Chandra Spiderweb Field I: evidence for widespread nuclear activity in the Protocluster
P. Tozzi, L. Pentericci, R. Gilli +21
(Abridged) We present an analysis of the 700 ks Chandra ACIS-S observation of the field around the Spiderweb Galaxy at z=2.156, focusing on the nuclear activity in the associated l…
Properties of the diffuse X-ray background in a high-resolution hydrodynamical simulation
M. Roncarelli, L. Moscardini, P. Tozzi +5
We study the properties of the diffuse X-ray background by using the results of a cosmological hydrodynamical simulation of the concordance LambdaCDM model. The simulation follows…
Discovery of a galaxy overdensity around a powerful, heavily obscured FRII radio galaxy at z=1.7: star formation promoted by large-scale AGN feedback?
R. Gilli, M. Mignoli, A. Peca +25
We report the discovery of a galaxy overdensity around a Compton-thick Fanaroff-Riley type II (FRII) radio galaxy at z=1.7 in the deep multiband survey around the z=6.3 QSO SDSS J1…