T. Moutard
A5068827523- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Cosmology and Gravitation Theories
- Astronomical Observations and Instrumentation
- Scientific Research and Discoveries
- Radio Astronomy Observations and Technology
- Astrophysics and Cosmic Phenomena
- Astrophysics and Star Formation Studies
- CCD and CMOS Imaging Sensors
- Astrophysical Phenomena and Observations
- Adaptive optics and wavefront sensing
- Remote Sensing in Agriculture
- Gaussian Processes and Bayesian Inference
- Impact of Light on Environment and Health
- Advanced Vision and Imaging
- Spacecraft and Cryogenic Technologies
- Geophysics and Gravity Measurements
- Atmospheric Ozone and Climate
- Superconducting Materials and Applications
- History and Developments in Astronomy
- Methane Hydrates and Related Phenomena
- Planetary Science and Exploration
- Particle Accelerators and Free-Electron Lasers
Centre National de la Recherche Scientifique
2014-2025
Aix-Marseille Université
2014-2025
Laboratoire d’Astrophysique de Marseille
2014-2025
Château Gombert
2023-2025
European Space Astronomy Centre
2024-2025
European Space Agency
2025
Saint Mary's University
2016-2023
University of Bologna
2018
National Institute for Astrophysics
2015
Astronomical Observatory of Rome
2015
We estimate the galaxy stellar mass function and density for star-forming quiescent galaxies with 0.2<z<4. construct a deep K<24 sample of 220000 selected using UltraVISTA DR1 data release. Our analysis is based on precise 30-band photometric redshifts. By comparing these redshifts 10800 spectroscopic from zCOSMOS bright faint surveys, we find precision sigma(dz/(1+z))=0.008 at i<22.5 sigma(dz/(1+zs))=0.03 1.5<z<4. derive correct Eddington bias. mass-dependent evolution global populations....
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...
Abstract We present the ultraviolet luminosity function and an estimate of cosmic star formation rate density at 8 < z 13 derived from deep NIRCam observations taken in parallel with MIRI Deep Survey Hubble Ultra Field (HUDF), covering field 2. Our (40 hr) reach F277W magnitude 30.8 (5 σ ), more than 2 mag deeper JWST public data sets already analyzed to find high-redshift galaxies. select a sample 44 > galaxy candidates based on their dropout nature F115W and/or F150W filters, high...
The relation between the stellar mass (M⋆) and star formation rate (SFR) characterizes how instantaneous is determined by galaxy past history growth of dark matter structures. We deconstruct M⋆-SFR plane measuring specific SFR functions in several bins from z = 0.2 out to 1.4 (specific SFR/M⋆, noted sSFR). Our analysis primary based on a 24 μm selected catalogue combining COSMOS GOODS surveys. estimate mid- far-infrared data for 20500 galaxies. sSFR are derived four within range 9.5 < log...
We present new constraints on the relationship between galaxies and their host dark matter haloes, measured from location of peak stellar-to-halo mass ratio (SHMR), up to most massive galaxy clusters at redshift z ∼ 0.8 over a volume nearly 0.1 Gpc3. use unique combination deep observations in CFHTLenS/VIPERS field near-UV near-IR, supplemented by ∼60 000 secure spectroscopic redshifts, analysing clustering, galaxy–galaxy lensing stellar function. interpret our measurements within halo...
We measure the evolution of galaxy stellar mass function from z=1.3 to z=0.5 using first 53,608 redshifts ongoing VIMOS Public Extragalactic Survey (VIPERS). estimate at several epochs discussing in detail amount cosmic variance affecting our estimate. find that Poisson noise and VIPERS survey are comparable with statistical uncertainties large surveys local universe. data allow us determine unprecedented accuracy high-mass tail function, which includes a significant number galaxies usually...
We present the first quantitative detection of large-scale filamentary structure at $z \simeq 0.7$ in large cosmological volume probed by VIMOS Public Extragalactic Redshift Survey (VIPERS). use simulations to show capability VIPERS recover robust topological features galaxy distribution, particular network. then investigate how galaxies with different stellar masses and activities are distributed around filaments find a significant segregation, most massive or quiescent being closer...
We carry out a joint analysis of redshift-space distortions and galaxy-galaxy lensing, with the aim measuring growth rate structure; this is key quantity for understanding nature gravity on cosmological scales late-time cosmic acceleration. make use final VIPERS redshift survey dataset, which maps portion Universe at $z \simeq 0.8$, lensing data from CFHTLenS over same area sky. build consistent theoretical model that combines non-linear galaxy biasing distortion models, confront it...
We investigate the evolution of galaxy stellar mass function (SMF) and density from redshift z=0.2 to z=1.5 a $K_{AB}$<22-selected sample with highly reliable photometric redshifts over an unprecedentedly large area. Our study is based on NIR observations carried out WIRCam at CFHT footprint VIPERS spectroscopic survey benefits high quality optical photometry CFHTLS UV GALEX satellite. The accuracy our $\sigma_z$ < 0.03 0.05 for bright ($i_{AB}$<22.5) faint ($i_{AB}$>22.5) samples,...
Abstract We make use of JWST medium-band and broadband NIRCam imaging, along with ultradeep MIRI 5.6 μ m in the Hubble eXtreme Deep Field to identify prominent line emitters at z ≃ 7–8. Out a total 58 galaxies 7–8, we find 18 robust candidates (≃31%) for (H β + [O iii ]) emitters, based on their enhanced fluxes F430M F444W filters, EW 0 +[O ≃87–2100 Å. Among these 16 lie coverage area 12 exhibit clear flux excess m, indicating simultaneous presence H α emission ) ≃200–3000 This is first time...
Abstract By using an ultradeep JWST/MIRI image at 5.6 μ m in the Hubble eXtreme Deep Field, we constrain role of strong H α emitters (HAEs) during “cosmic reionization” z ≃ 7–8. Our sample HAEs is comprised young (<35 Myr) galaxies, except for one single galaxy (≈300 Myr), with low stellar masses (≲10 9 M ⊙ ). These show a wide range rest-frame UV continuum slopes ( β ), median value = −2.15 ± 0.21, which broadly correlates mass. We estimate ionizing photon production efficiency ξ ion,0 )...
Abstract We present deep James Webb Space Telescope (JWST)/Mid-Infrared Instrument (MIRI) F560W observations of a flux-limited, Atacama Large Millimeter/submillimeter Array (ALMA)-selected sample 28 galaxies at z = 0.5–3.7 in the Hubble Ultra Deep Field (HUDF). The data from MIRI Imaging Survey (MIDIS) reveal stellar structure HUDF rest-frame wavelengths λ > 1 μ m for first time. revise mass estimates using new JWST photometry and find good agreement with pre-JWST analyses; few...
We exploit the first public data release of VIPERS to investigate environmental effects in galaxy evolution between $z\sim0.5$ and $0.9$. The large number spectroscopic redshifts over an area about $10\,\mathrm{deg}^2$ provides a sample with high statistical power. accurate redshift measurements, $\sigma_z = 0.00047(1+z_\mathrm{spec})$, allow us robustly isolate galaxies living lowest- highest-density environments, as defined terms spatial 3D density contrast. estimate stellar mass function...
We present observations collected in the CFHTLS-VIPERS region ultraviolet with GALEX satellite (far- and near-ultraviolet channels) near-infrared CFHT/WIRCam camera (Ks band) over an area of 22 27 deg2, respectively. The depth photometry was optimised to measure physical properties (e.g., star formation rate, stellar masses) all galaxies VIPERS spectroscopic survey. large volume explored by will enable a unique investigation relationship between galaxy their environment (density field cosmic...
The CFHT Large Area U-band Deep Survey (CLAUDS) uses data taken with the MegaCam mosaic imager on to produce images of 18.60 deg2 median seeing FWHM=0.92 arcsec and a depth U = 27.1 AB (5 sigma in 2 apertures), selected areas that total 1.36 reaching U=27.7 AB. These are deepest assembled date over this large an area. located four fields also imaged comparably faint levels grizy several narrowband filters as part Hyper Suprime-Cam (HSC) Subaru Strategic Program (HSC-SSP). datasets will...
Abstract We study the stellar population properties of 182 spectroscopically confirmed (MUSE/VLT) Ly α emitters (LAEs) and 450 photometrically selected Lyman-break galaxies (LBGs) at z = 2.8–6.7 in Hubble Extreme Deep Field. Leveraging combined power Space Telescope JWST NIRCam MIRI observations, we analyze their rest-frame UV-through-near-IR spectral energy distributions, with playing a crucial role robustly assessing LAEs’ masses ages. Our LAEs are low-mass objects <mml:math...
We use the full VIPERS redshift survey in combination with SDSS-DR7 to explore relationships between star-formation history (using d4000), stellar mass and galaxy structure, how these have evolved since z~1. trace extents evolutions of both blue cloud red sequence, by fitting double Gaussians d4000 distribution galaxies narrow bins, for four intervals over 0<z<1. This reveals downsizing star formation, as high-mass limit retreats steadily time from M*~10^11.2 M_sun at z~0.9 M*~10^10.7...
We constrain the rest-frame FUV (1546\AA), NUV (2345\AA) and U-band (3690\AA) luminosity functions (LFs) densities (LDs) with unprecedented precision from $z\sim0.2$ to $z\sim3$ (FUV, NUV) $z\sim2$ (U-band). Our sample of over 4.3 million galaxies, selected CFHT Large Area $U$-band Deep Survey (CLAUDS) HyperSuprime-Cam Subaru Strategic Program (HSC-SSP) data lets us probe very faint regime (down $M_\mathrm{FUV},M_\mathrm{NUV},M_\mathrm{U} \simeq -15$ at low redshift) while simultaneously...
We investigate the connection between environment and different quenching channels that galaxies are prone to follow in rest-frame NUVrK colour diagram, as identified by Moutard et al. (2016b). Namely, fast channel followed $young$ low-mass slow $old$ high-mass ones. make use of >22 deg$^2$ covered VIPERS Multi-Lambda Survey (VIPERS-MLS) select a galaxy sample complete down stellar masses $M_* > 10^{9.4} M_\odot$ at $z < 0.65$ ($M_* 10^{8.8} 0.5$) including 33,500 (43,000) quiescent properly...