M. Béthermin
A5054190787- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Astrophysical Phenomena and Observations
- Superconducting and THz Device Technology
- Scientific Research and Discoveries
- Spectroscopy and Laser Applications
- Calibration and Measurement Techniques
- Cosmology and Gravitation Theories
- Adaptive optics and wavefront sensing
- Atmospheric Ozone and Climate
- CCD and CMOS Imaging Sensors
- Remote Sensing in Agriculture
- History and Developments in Astronomy
- Dark Matter and Cosmic Phenomena
- Impact of Light on Environment and Health
- Spectroscopy and Chemometric Analyses
- Photocathodes and Microchannel Plates
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
Observatoire astronomique de Strasbourg
2022-2025
Laboratoire d’Astrophysique de Marseille
2017-2025
Château Gombert
2018-2025
Aix-Marseille Université
2017-2024
Centre National de la Recherche Scientifique
2014-2024
Université de Strasbourg
2022-2024
European Southern Observatory
2014-2019
Max Planck Institute for Astronomy
2019
Max Planck Society
2019
European Southern Observatory
2017
The ESA's Planck satellite, dedicated to studying the early Universe and its subsequent evolution, was launched 14 May 2009 has been scanning microwave submillimetre sky continuously since 12 August 2009. This paper gives an overview of mission performance, processing, analysis, characteristics data, scientific results, science data products papers in release. include maps CMB diffuse extragalactic foregrounds, a catalogue compact Galactic sources, list sources detected through SZ effect....
The Herschel Multi-tiered Extragalactic Survey (HerMES) is a legacy programme designed to map set of nested fields totalling ∼380 deg2. Fields range in size from 0.01 ∼20 deg2, using the Herschel-Spectral and Photometric Imaging Receiver (SPIRE) (at 250, 350 500 μm) Herschel-Photodetector Array Camera Spectrometer (PACS) 100 160 μm), with an additional wider component 270 deg2 SPIRE alone. These bands cover peak redshifted thermal spectral energy distribution interstellar dust thus capture...
Using data from the mid-infrared to millimeter wavelengths for individual galaxies and stacked ensembles at 0.5 < z 2, we derive robust estimates of dust masses (Mdust) main-sequence (MS) galaxies, which obey a tight correlation between star formation rate (SFR) stellar mass (M*), starbursting that fall outside relation. Exploiting gas-to-dust with metallicity (Mgas/Mdust–Z), use our measurements constrain gas content, CO-to-H2 conversion factors (αCO), efficiencies (SFE) these distant...
We present an analysis of the deepest Herschel images in four major extragalactic fields GOODS-North, GOODS-South, UDS and COSMOS obtained within GOODS-Herschel CANDELS-Herschel key programs. The picture provided by 10497 individual far-infrared detections is supplemented stacking a mass-complete sample 62361 star-forming galaxies from CANDELS-HST H band-selected catalogs two deep ground-based Ks GOODS-North COSMOS-wide fields, order to obtain one most accurate unbiased understanding date...
We exploit the deep and extended far infrared data sets (at 70, 100 160 um) of Herschel GTO PACS Evolutionary Probe (PEP) Survey, in combination with HERschel Multi tiered Extragalactic Survey (HerMES) at 250, 350 500 um, to derive evolution restframe 35 60 90 total (IR) luminosity functions (LFs) up z~4. detect very strong for IR LF combined a density evolution. In agreement previous findings, increases steeply z~1, then flattens between z~1 z~3 decrease z greater than 3. Galaxies different...
We measure the stellar mass function (SMF) and density of galaxies in COSMOS field up to z ~ 6. select them near-IR bands COSMOS2015 catalogue, which includes ultra-deep photometry from UltraVISTA-DR2, SPLASH, Subaru/Hyper Suprime-Cam. At > 2.5 we use new precise photometric redshifts with error σ = 0.03(1 + ) an outlier fraction 12%, estimated by means unique spectroscopic sample (~100 000 measurements total, more than one thousand having robust spec 2.5). The increased exposure time...
Star-forming galaxies (SFGs) display a continuous distribution of specific star formation rates (sSFR) which can be approximated by the superposition two log-normal distributions. The 1st these encompasses main sequence (MS) SFGs, 2nd one rarer population starbursts (SB). We show that sSFR-distribution SBs regarded as result physical process (plausibly merging) taking mathematical form boosting kernel and enhancing activity. explore utility splitting star-forming into MS SB - an approach we...
We present results from the deepest Herschel-PACS (Photodetector Array Camera and Spectrometer) far-infrared blank field extragalactic survey, obtained by combining observations of GOODS (Great Observatories Origins Deep Survey) fields PACS Evolutionary Probe (PEP) GOODS-Herschel key programmes. describe data reduction construction images catalogues. In parts GOODS-S field, catalogues reach 3-sigma depths 0.9, 0.6 1.3 mJy at 70, 100 160 um, respectively, resolve ~75% cosmic infrared...
We aim to measure the average dust and molecular gas content of massive star-forming galaxies ($\rm > 3 \times 10^{10}\,M_\odot$) up z=4 in COSMOS field determine if intense star formation observed at high redshift is induced by major mergers or caused large reservoirs. Firstly, we measured evolution spectral energy distributions as a function using stacking analysis Spitzer, Herschel, LABOCA, AzTEC data for two samples galaxies: normal objects strong starbursts, defined their distance main...
Using the Atacama Large Millimeter/submillimeter Array, we have conducted a blind redshift survey in 3 mm atmospheric transmission window for 26 strongly lensed dusty star-forming galaxies (DSFGs) selected with South Pole Telescope. The sources were to S1.4 > 20 mJy and dust-like spectrum and, remove low-z sources, not bright radio (S843 MHz < 6 mJy) or far-infrared counterparts (S100 μm 1 Jy, S60 200 mJy). We robustly detect 44 line features our survey, which identify as redshifted emission...
We study a sample of 61 submillimetre galaxies (SMGs) selected from ground-based surveys, with known spectroscopic redshifts and observed Herschel as part the PACS Evolutionary Probe (PEP) Multi-tiered Extragalactic Survey (HerMES) key programmes. use broad far-infrared wavelength coverage (100-600um) provided by combination SPIRE observations. Using power-law temperature distribution model to derive infrared luminosities dust temperatures, we measure emissivity spectral index for SMGs...
We present a parameter-less approach to predict the shape of infrared (IR) luminosity function (LF) at redshifts z < 2. It requires no tuning and relies on only three observables: (1) redshift evolution stellar mass for star-forming galaxies, (2) specific star formation rate (sSFR) main-sequence (3) double-Gaussian decomposition sSFR-distribution fixed into contribution (assumed redshift- mass-invariant) from starburst activity. This self-consistent simple framework provides powerful tool...
Using X-ray stacking analyses we estimate the average amounts of supermassive black hole (SMBH) growth taking place in star-forming galaxies (SFGs) at z~1 and z~2 as a function galaxy stellar mass (M*). We find SMBH rate follows remarkably similar trends with M* redshift star-formation rates (SFRs) their host (i.e., dM_BH/dt ~ M*^(0.86+/-0.39) for sample M*^(1.05+/-0.36) sample). It that ratio to SFR is (a) flat respect (b) not evolving (c) close required maintain/establish ~10^{-3} also...
PRISM (Polarized Radiation Imaging and Spectroscopy Mission) was proposed to ESA in May 2013 as a large-class mission for investigating within the framework of Cosmic Vision program set important scientific questions that require high resolution, sensitivity, full-sky observations sky emission at wavelengths ranging from millimeter-wave far-infrared. PRISM's main objective is explore distant universe, probing cosmic history very early times until now well structures, distribution matter,...
The ALPINE-ALMA large program targets the [CII] 158 $\mu$m line and far-infrared continuum in 118 spectroscopically confirmed star-forming galaxies between z=4.4 z=5.9. It represents first statistical sample built this redshift range. We present details of data processing construction catalogs. detected 23 our continuum. To derive accurate infrared luminosities obscured star formation rates, we measured conversion factor from ALMA rest-frame dust luminosity to total (L$_{\rm IR}$) after...
We use deep panchromatic datasets in the GOODS-N field, from GALEX to deepest Herschel far-infrared and VLA radio continuum imaging, explore, using mass-complete samples, evolution of star formation activity dust attenuation star-forming galaxies z~4. Our main results can be summarized as follows: i) slope SFR-M correlation is consistent with being constant, equal ~0.8 at least up z~1.5, while its normalization keeps increasing redshift; ii) for first time here we are able explore FIR-radio...
The South Pole Telescope has discovered one hundred gravitationally lensed, high-redshift, dusty, star-forming galaxies (DSFGs). We present 0.5" resolution 870um Atacama Large Millimeter/submillimeter Array imaging of a sample 47 DSFGs spanning z=1.9-5.7, and construct gravitational lens models these sources. Our visibility-based modeling incorporates several sources residual interferometric calibration uncertainty, allowing us to properly account for noise in the observations. At least 70%...
We present a 69 arcmin$^2$ ALMA survey at 1.1mm, GOODS-ALMA, matching the deepest HST-WFC3 H-band part of GOODS-South field. taper 0"24 original image with homogeneous and circular synthesized beam 0"60 to reduce number independent beams - thus reducing purely statistical spurious detections optimize sensitivity point sources. extract catalogue galaxies selected by identify sources without HST counterparts down 5$\sigma$ limiting depth H=28.2 AB (HST/WFC3 F160W). detects 20 brighter than 0.7...
We present ALMA Band 9 observations of the [C II]158um emission for a sample 10 main-sequence galaxies at redshift z ~ 2, with typical stellar masses (log M*/Msun 10.0 - 10.9) and star formation rates (~ 35 115 Msun/yr). Given strong well understood evolution interstellar medium from to = we investigate behaviour II] empirically identify its primary driver. detect six (four secure, two tentative) estimate ensemble averages including non detections. The II]-to-infrared luminosity ratio (L[C...
The ALMA-ALPINE [CII] survey is aimed at characterizing the properties of a sample normal star-forming galaxies (SFGs). ALMA Large Program to INvestigate (ALPINE) features 118 observed in [CII]-158$μ$m line and far infrared (FIR) continuum emission during period rapid mass assembly, right after end HI reionization, redshifts 45). Based on visual inspection data cubes together with large wealth ancillary data, we find surprisingly wide range galaxy types, including 40% that are mergers, 20%...
Abstract We present the ancillary data and basic physical measurements for galaxies in ALMA Large Program to Investigate C + at Early Times (ALPINE) survey—the first large multiwavelength survey that aims characterizing gas dust properties of 118 main-sequence redshifts 4.4 < z 5.9 via measurement [ <?CDATA ${\rm{C}}\,{\rm{II}}$?> ] emission $158\,\mu {\rm{m}}$?> (64% >3.5 σ ) surrounding far-infrared continuum conjunction with a wealth optical near-infrared data. outline detail...