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View article: A second low-mass planet orbiting the nearby M-dwarf GJ 536
A second low-mass planet orbiting the nearby M-dwarf GJ 536 Open
GJ 536 is a low-mass star, located 10 pc away from the Sun, that hosts a low-mass planet orbiting with a period of 8.71 days. Based on an analysis of the radial velocity (RV) time series obtained from the available data of the spectrograph…
View article: ALMA millimetre-wavelength imaging of HD 138965: new constraints on the debris dust composition and presence of planetary companions
ALMA millimetre-wavelength imaging of HD 138965: new constraints on the debris dust composition and presence of planetary companions Open
HD 138965 is a young A type star and member of the nearby young Argus association. This star is surrounded by a broad, bright debris disc with two temperature components that was spatially resolved at far-infrared wavelengths by Herschel. …
View article: ALMA millimetre-wavelength imaging of HD 138965: New constraints on the debris dust composition and presence of planetary companions
ALMA millimetre-wavelength imaging of HD 138965: New constraints on the debris dust composition and presence of planetary companions Open
HD 138965 is a young A type star and member of the nearby young Argus association. This star is surrounded by a broad, bright debris disc with two temperature components that was spatially resolved at far-infrared wavelengths by Herschel. …
View article: Mapping the Milky Way with Gaia Bp/Rp spectra
Mapping the Milky Way with Gaia Bp/Rp spectra Open
Context. Gaia Bp/Rp spectrophotometry for over two hundred million stars has been publicly released as part of Gaia Data Release 3 (DR3). These data have great potential for mapping metallicity across the Milky Way. Several recent studies …
View article: Environmental effects on nearby debris discs
Environmental effects on nearby debris discs Open
We probe the effect of the ISM on debris disc occurrence rates and on the morphologies of the discs. We used results from the Herschel Space Observatory DUNES and DEBRIS surveys of 295 nearby FGK dwarf stars imaged at 100 $μ$m and 160 $μ$m…
View article: Environmental effects on nearby debris discs
Environmental effects on nearby debris discs Open
Aims . We investigate the influence of the interstellar medium (ISM) on debris discs using a statistical approach. We probe the effect of the ISM on debris disc occurrence rates and on the morphologies of the discs. Methods . We used resul…
View article: REsolved ALMA and SMA Observations of Nearby Stars (REASONS): A population of 74 resolved planetesimal belts at millimetre wavelengths
REsolved ALMA and SMA Observations of Nearby Stars (REASONS): A population of 74 resolved planetesimal belts at millimetre wavelengths Open
Planetesimal belts are ubiquitous around nearby stars, and their spatial properties hold crucial information for planetesimal and planet formation models. We present resolved dust observations of 74 planetary systems as part of the REsolve…
View article: Mapping the Milky Way with Gaia Bp/Rp spectra I: Systematic flux corrections and atmospheric parameters for 68 million stars
Mapping the Milky Way with Gaia Bp/Rp spectra I: Systematic flux corrections and atmospheric parameters for 68 million stars Open
Gaia Bp/Rp spectra for over two hundred million stars have great potential for mapping metallicity across the Milky Way. We aim to construct an alternative catalog of atmospheric parameters from Gaia Bp/Rp spectra by fitting them with synt…
View article: REsolved ALMA and SMA Observations of Nearby Stars (REASONS)
REsolved ALMA and SMA Observations of Nearby Stars (REASONS) Open
Context . Planetesimal belts are ubiquitous around nearby stars, and their spatial properties hold crucial information for planetesimal and planet formation models. Aims . We present resolved dust observations of 74 planetary systems as pa…
View article: Multiple reference star differential imaging with VLT/SPHERE
Multiple reference star differential imaging with VLT/SPHERE Open
Context . High-contrast imaging observations mostly rely on angular differential imaging, a successful technique for detecting point-sources, such as planets. However, in the vicinity of the star (typically below 300 mas), this technique s…
View article: <i>Euclid</i>: Early Release Observations – A glance at free-floating newborn planets in the σ Orionis cluster
<i>Euclid</i>: Early Release Observations – A glance at free-floating newborn planets in the σ Orionis cluster Open
We provide an early assessment of the imaging capabilities of the Euclid space mission to deeply probe nearby star-forming regions and associated very young open clusters, and in particular, to determine to which extent it can shed light i…
View article: Single-epoch and Differential Astrometric Microlensing of Quasars
Single-epoch and Differential Astrometric Microlensing of Quasars Open
We propose and discuss a new experimental approach to measure the centroid shift induced by gravitational microlensing in the images of lensed quasars (astrometric microlensing). Our strategy is based on taking the photocenter of a region …
View article: Single-epoch and Differential Astrometric Microlensing of Quasars
Single-epoch and Differential Astrometric Microlensing of Quasars Open
We propose and discuss a new experimental approach to measure the centroid shift induced by gravitational microlensing in the images of lensed quasars (astrometric microlensing). Our strategy is based on taking the photocenter of a region …
View article: Substellar science in the wake of the ESA Euclid space mission
Substellar science in the wake of the ESA Euclid space mission Open
The ESA space mission Euclid was launched on July 1st, 2023 and is undergoing its science verification phase. In this invited review we show that Euclid means a before and an after for our understanding of ultra-cool dwarfs and substellar-…
View article: The GAPS programme at TNG
The GAPS programme at TNG Open
Context. Observational data from space- and ground-based campaigns have revealed that the 10-30 Ma old V1298Tau star hosts a compact and massive system of four planets. Mass estimates are available for the two outer giant planets and point…
View article: Sudden Extreme Obscuration of a Sun-like Main-sequence Star: Evolution of the Circumstellar Dust around ASASSN-21qj
Sudden Extreme Obscuration of a Sun-like Main-sequence Star: Evolution of the Circumstellar Dust around ASASSN-21qj Open
ASASSN-21qj is a distant Sun-like star that recently began an episode of deep dimming events after no prior recorded variability. Here we examine archival and newly obtained optical and near-infrared data of this star. The deep aperiodic d…
View article: The GAPS program at TNG XLVII: The unusual formation history of V1298 Tau
The GAPS program at TNG XLVII: The unusual formation history of V1298 Tau Open
Observational data from space and ground-based campaigns reveal that the 10-30 Ma old V1298 Tau star hosts a compact and massive system of four planets. Mass estimates for the two outer giant planets point to unexpectedly high densities fo…
View article: Identification of Extended Emission Gamma-Ray Burst Candidates Using Machine Learning
Identification of Extended Emission Gamma-Ray Burst Candidates Using Machine Learning Open
Gamma-ray bursts (GRBs) have been classified traditionally based on their duration. The increasing number of extended emission (EE) GRBs, lasting typically more than 2s but with properties similar to those of short GRBs, challenges the tra…
View article: Identification of Extended Emission Gamma-Ray-Bursts Candidates using Machine Learning
Identification of Extended Emission Gamma-Ray-Bursts Candidates using Machine Learning Open
Gamma-Ray bursts (GRBs) have been traditionally classified based on their duration. The increasing number of extended emission (EE) GRBs, lasting typically more than 2 seconds but with properties similar to those of a short GRBs, challenge…
View article: Stirred but not shaken: a multi-wavelength view of HD 16743's debris disc
Stirred but not shaken: a multi-wavelength view of HD 16743's debris disc Open
Planetesimals -- asteroids and comets -- are the building blocks of planets in protoplanetary discs and the source of dust, ice and gas in debris discs. Along with planets they comprise the left-over material after star formation that cons…
View article: Stirred but not shaken: a multiwavelength view of HD 16743’s debris disc
Stirred but not shaken: a multiwavelength view of HD 16743’s debris disc Open
Planetesimals – asteroids and comets – are the building blocks of planets in protoplanetary discs and the source of dust, ice, and gas in debris discs. Along with planets they comprise the left-over material after star formation that const…
View article: The high-albedo, low polarization disk around HD 114082 that harbors a Jupiter-sized transiting planet
The high-albedo, low polarization disk around HD 114082 that harbors a Jupiter-sized transiting planet Open
Aims. We present new optical and near-infrared images of the debris disk around the F-type star HD 114082 in the Scorpius-Centaurus OB association. We obtained direct imaging observations and analyzed the TESS photometric time series data …
View article: The high-albedo, low polarization disk around HD 114082 harbouring a Jupiter-sized transiting planet
The high-albedo, low polarization disk around HD 114082 harbouring a Jupiter-sized transiting planet Open
We present new optical and near-IR images of debris disk around the F-type star HD 114082. We obtained direct imaging observations and analysed the TESS photometric time series data of this target with a goal to search for planetary compan…
View article: Hubble constant and nuclear equation of state from kilonova spectro-photometric light curves
Hubble constant and nuclear equation of state from kilonova spectro-photometric light curves Open
The merger of two compact objects of which at least one is a neutron star is signalled by transient electromagnetic emission in a kilonova (KN). This event is accompanied by gravitational waves and possibly other radiation messengers such …
View article: The SHARDDS survey: limits on planet occurrence rates based on point sources analysis via the Auto-RSM framework
The SHARDDS survey: limits on planet occurrence rates based on point sources analysis via the Auto-RSM framework Open
In the past decade, HCI surveys provided new insights about the frequency and properties of substellar companions at separation larger than 5 au. In this context, our study aims to detect and characterise potential exoplanets and brown dwa…
View article: The SHARDDS survey: limits on planet occurrence rates based on point sources analysis via the Auto-RSM framework
The SHARDDS survey: limits on planet occurrence rates based on point sources analysis via the Auto-RSM framework Open
Context . In the past decade, high contrast imaging allowed the detection and characterisation of exoplanets, brown dwarfs, and circumstellar disks. Large surveys provided new insights about the frequency and properties of massive sub-stel…
View article: HORuS transmission spectroscopy and revised planetary parameters of KELT-7 b
HORuS transmission spectroscopy and revised planetary parameters of KELT-7 b Open
We report on the high-resolution spectroscopic observations of two planetary transits of the hot Jupiter KELT-7b (Mp = 1.28 ± 0.17MJup, Teq = 2028 K) observed with the High Optical Resolution Spectrograph (HORuS) mounted on the 10.4-m Gran…
View article: Hubble constant and nuclear equation of state from kilonova spectro-photometric light curves
Hubble constant and nuclear equation of state from kilonova spectro-photometric light curves Open
The merger of two compact objects of which at least one is a neutron star is signalled by transient electromagnetic emission in a kilonova (KN). This event is accompanied by gravitational waves and possibly other radiation messengers such …
View article: Rapid contraction of giant planets orbiting the 20-million-year-old star V1298 Tau
Rapid contraction of giant planets orbiting the 20-million-year-old star V1298 Tau Open
View article: The SAPP pipeline for the determination of stellar abundances and atmospheric parameters of stars in the core program of the PLATO mission
The SAPP pipeline for the determination of stellar abundances and atmospheric parameters of stars in the core program of the PLATO mission Open
We introduce the SAPP (Stellar Abundances and atmospheric Parameters Pipeline), the prototype of the code that will be used to determine parameters of stars observed within the core program of the PLATO space mission. The pipeline is based…