E. Pompei
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View article: The role of supercluster filaments in shaping galaxy clusters
The role of supercluster filaments in shaping galaxy clusters Open
In a hierarchical ΛCDM Universe, cosmic filaments serve as the primary channels for matter accretion into galaxy clusters, influencing the shape of their dark matter halos. We investigate whether the elongation of galaxy clusters correlate…
View article: Quantifying thermal water dissociation in the dayside photosphere of WASP-121 b using NIRPS
Quantifying thermal water dissociation in the dayside photosphere of WASP-121 b using NIRPS Open
The intense stellar irradiation of ultra-hot Jupiters results in some of the most extreme atmospheric environments in the planetary regime. On their daysides, temperatures can be sufficiently high for key atmospheric constituents to therma…
View article: NIRPS detection of delayed atmospheric escape from the warm and misaligned Saturn-mass exoplanet WASP-69 b
NIRPS detection of delayed atmospheric escape from the warm and misaligned Saturn-mass exoplanet WASP-69 b Open
Context . Near-infrared high-resolution échelle spectrographs unlock access to fundamental properties of exoplanets, from their atmospheric escape and composition to their orbital architecture, which can all be studied simultaneously from …
View article: CHANCES, the Chilean Cluster Galaxy Evolution Survey: Selection and initial characterisation of clusters and superclusters
CHANCES, the Chilean Cluster Galaxy Evolution Survey: Selection and initial characterisation of clusters and superclusters Open
CHANCES, the CHileAN Cluster galaxy Evolution Survey, will study the evolution of galaxies in and around 100 massive galaxy clusters from the local Universe out to $z = 0.45$, and two superclusters at $z \sim 0.05$ that contain roughly 25 …
View article: The VANDELS Survey: Star formation and quenching in two over-densities at 3 < z < 4
The VANDELS Survey: Star formation and quenching in two over-densities at 3 < z < 4 Open
Context: Understanding galaxy evolution in dense environments, particularly proto-clusters, is crucial for studying mechanisms driving star formation and quenching. Aims: This study examines how two proto-cluster over-densities at 3 < z < …
View article: Walking with SOXS towards the transient sky
Walking with SOXS towards the transient sky Open
SOXS (Son Of X-Shooter) is the new ESO instrument that is going to be\ninstalled on the 3.58-m New Technology Telescope at the La Silla Observatory.\nSOXS is a single object spectrograph offering a wide simultaneous spectral\ncoverage from…
View article: Galaxy Spectra neural Network (GaSNet). II. Using deep learning for spectral classification and redshift predictions
Galaxy Spectra neural Network (GaSNet). II. Using deep learning for spectral classification and redshift predictions Open
The size and complexity reached by the large sky spectroscopic surveys require efficient, accurate, and flexible automated tools for data analysis and science exploitation. We present the Galaxy Spectra Network/GaSNet-II, a supervised mult…
View article: NIKA2 observations of 3 low-mass galaxy clusters at <i>z</i> ~ 1: Pressure profile and <i>Y</i><sub>SZ</sub> – <i>M</i> relation
NIKA2 observations of 3 low-mass galaxy clusters at <i>z</i> ~ 1: Pressure profile and <i>Y</i><sub>SZ</sub> – <i>M</i> relation Open
Three galaxy clusters selected from the XXL X-ray survey at high redshift and low mass ( z ~ 1 and M 500 ~ 1 – 2 × 10 14 M ⊙ ) were observed with NIKA2 to image their Sunyaev-Zel'dovich effect (SZ) signal. They all present an SZ morphology…
View article: The XXL Survey
The XXL Survey Open
Context. The thermodynamical properties of the intracluster medium (ICM) are driven by scale-free gravitational collapse, but they also reflect the rich astrophysical processes at play in galaxy clusters. At low masses (∼10 14 M ⊙ ) and hi…
View article: Galaxy Spectra neural Network (GaSNet). II. Using Deep Learning for Spectral Classification and Redshift Predictions
Galaxy Spectra neural Network (GaSNet). II. Using Deep Learning for Spectral Classification and Redshift Predictions Open
Large sky spectroscopic surveys have reached the scale of photometric surveys in terms of sample sizes and data complexity. These huge datasets require efficient, accurate, and flexible automated tools for data analysis and science exploit…
View article: NIKA2 observations of 3 low-mass galaxy clusters at $z \sim 1$: pressure profile and $Y_{\rm SZ}$-$M$ relation
NIKA2 observations of 3 low-mass galaxy clusters at $z \sim 1$: pressure profile and $Y_{\rm SZ}$-$M$ relation Open
Three galaxy clusters selected from the XXL X-ray survey at high redshift and low mass ($z\sim1$ and $M_{500} \sim 1-2 \times 10^{14}$ M$_{\odot}$) were observed with NIKA2 to image their Sunyaev-Zel'dovich effect (SZ) signal. They all pre…
View article: The XXL Survey LI. Pressure profile and $Y_{\rm SZ}$-$M$ scaling relation in three low-mass galaxy clusters at $z\sim1$ observed with NIKA2
The XXL Survey LI. Pressure profile and $Y_{\rm SZ}$-$M$ scaling relation in three low-mass galaxy clusters at $z\sim1$ observed with NIKA2 Open
The thermodynamical properties of the intracluster medium (ICM) are driven by scale-free gravitational collapse, but they also reflect the rich astrophysical processes at play in galaxy clusters. At low masses ($\sim 10^{14}$ M$_{\odot}$) …
View article: The VANDELS ESO public spectroscopic survey: The spectroscopic measurements catalogue
The VANDELS ESO public spectroscopic survey: The spectroscopic measurements catalogue Open
VANDELS is a deep spectroscopic survey, performed with the VIMOS instrument at VLT, aimed at studying in detail the physical properties of high-redshift galaxies. VANDELS targeted about 2100 sources at 1
View article: The VANDELS ESO public spectroscopic survey: The spectroscopic measurements catalogue
The VANDELS ESO public spectroscopic survey: The spectroscopic measurements catalogue Open
VANDELS is a deep spectroscopic survey, performed with the VIMOS instrument at VLT, aimed at studying in detail the physical properties of high-redshift galaxies. VANDELS targeted ~2100 sources at 1 < z < 6.5 in the CANDELS Chandra Deep-Fi…
View article: The ionizing photon production efficiency of bright <i>z</i> ∼ 2 − 5 galaxies
The ionizing photon production efficiency of bright <i>z</i> ∼ 2 − 5 galaxies Open
Aims. We investigate the production efficiency of ionizing photons ( ξ ion ∗ ) of 1174 galaxies with secure redshift at z = 2 − 5 from the VANDELS survey to determine the relation between ionizing emission and physical properties of bright…
View article: The ionizing photon production efficiency of bright z$\sim$2-5 galaxies
The ionizing photon production efficiency of bright z$\sim$2-5 galaxies Open
We investigate the production efficiency of ionizing photons ($ξ_{ion}^*$) of 1174 galaxies with secure redshift at z=2-5 from the VANDELS survey to determine the relation between ionizing emission and physical properties of bright and mas…
View article: The VANDELS survey: the ionizing properties of star-forming galaxies at 3 ≤ <i>z</i> ≤ 5 using deep rest-frame ultraviolet spectroscopy
The VANDELS survey: the ionizing properties of star-forming galaxies at 3 ≤ <i>z</i> ≤ 5 using deep rest-frame ultraviolet spectroscopy Open
The physical properties of Epoch of Reionization (EoR) galaxies are still poorly constrained by observations. To better understand the ionizing properties of galaxies in the EoR, we investigate deep, rest-frame ultraviolet (UV) spectra of …
View article: Progress on the SOXS transients chaser for the ESO-NTT
Progress on the SOXS transients chaser for the ESO-NTT Open
SOXS (Son Of X-Shooter) is a single object spectrograph offering a simultaneous spectral coverage from U- to H-band, built by an international consortium for the 3.58-m ESO New Technology Telescope at the La Silla Observatory. It is design…
View article: The HARPS search for southern extra-solar planets. XLVI. 12 super-Earths around the solar type stars HD 39194, HD 93385, HD 96700, HD 154088, and HD 189567
The HARPS search for southern extra-solar planets. XLVI. 12 super-Earths around the solar type stars HD 39194, HD 93385, HD 96700, HD 154088, and HD 189567 Open
Context. We present precise radial-velocity measurements of five solar-type stars observed with the HARPS Echelle spectrograph mounted on the 3.6-m telescope in La Silla (ESO, Chile). With a time span of more than 10 years and a fairly den…
View article: The HARPS search for southern extra-solar planets
The HARPS search for southern extra-solar planets Open
Context. We present precise radial-velocity measurements of five solar-type stars observed with the HARPS Echelle spectrograph mounted on the 3.6-m telescope in La Silla (ESO, Chile). With a time span of more than 10 yr and a fairly dense …
View article: Understanding X-ray and optical selection of galaxy clusters: a comparison of the XXL and CAMIRA cluster catalogues obtained in the common XXL-HSC SSP area
Understanding X-ray and optical selection of galaxy clusters: a comparison of the XXL and CAMIRA cluster catalogues obtained in the common XXL-HSC SSP area Open
Large samples of galaxy clusters provide knowledge of both astrophysics in the most massive virialized environments and the properties of the cosmological model that defines our Universe. However, an important issue that affects the interp…
View article: The VANDELS ESO public spectroscopic survey
The VANDELS ESO public spectroscopic survey Open
VANDELS is an ESO Public Spectroscopic Survey designed to build a sample of high-signal-to-noise ratio, medium-resolution spectra of galaxies at redshifts between 1 and 6.5. Here we present the final Public Data Release of the VANDELS Surv…
View article: The VANDELS ESO public spectroscopic survey: final Data Release of 2087 spectra and spectroscopic measurements
The VANDELS ESO public spectroscopic survey: final Data Release of 2087 spectra and spectroscopic measurements Open
VANDELS is an ESO Public Spectroscopic Survey designed to build a sample of high signal to noise, medium resolution spectra of galaxies at redshift between 1 and 6.5. Here we present the final Public Data Release of the VANDELS Survey, com…
View article: Development status of the SOXS spectrograph for the ESO-NTT telescope
Development status of the SOXS spectrograph for the ESO-NTT telescope Open
SOXS (Son Of X-Shooter) is a single object spectrograph, characterized by\noffering a wide simultaneous spectral coverage from U- to H-band, built by an\ninternational consortium for the 3.6-m ESO New Technology Telescope at the La\nSilla …
View article: The TOI-763 system: sub-Neptunes orbiting a Sun-like star
The TOI-763 system: sub-Neptunes orbiting a Sun-like star Open
We report the discovery of a planetary system orbiting TOI-763(aka CD-39 7945), a V = 10.2, high proper motion G-type dwarf star that was photometrically monitored by the TESS space mission in Sector 10. We obtain and model the stellar spe…
View article: The VANDELS survey: Discovery of massive overdensities of galaxies at <i>z</i> > 2
The VANDELS survey: Discovery of massive overdensities of galaxies at <i>z</i> > 2 Open
Context. The advent of deep, multi-wavelength surveys, together with the availability of extensive numerical simulations, now allow us for the systematic search and study of (proto)clusters and their surrounding environment as a function o…
View article: NaCo — The Story of a Lifetime
NaCo — The Story of a Lifetime Open
NaCo was switched off on 2 October 2019, almost 18 years after its first light. The last exposure was of the standard star HD590 as part of the close-out calibrations. To date, 699 papers have been published using NaCo data, including obse…
View article: Report on the ESO Summer School “La Silla Observing Summer School 2020”
Report on the ESO Summer School “La Silla Observing Summer School 2020” Open
The La Silla Observing Summer School was originally conceived with the goal of providing hands-on training in the use of telescopes and astronomical instruments for senior masters and young doctoral students. The third La Silla Summer Scho…
View article: The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth andNeptune-mass companions
The HARPS search for southern extra-solar planets: XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth andNeptune-mass companions Open
We thank the Swiss National Science Foundation (SNSF) and the Geneva University for their continuous support to our planet search programs. This work has been in particular carried out in the frame of the National Centre for Competence in …
View article: The HARPS search for southern extra-solar planets. XLII. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions
The HARPS search for southern extra-solar planets. XLII. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions Open
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