Search Publications
In situ multi-spacecraft and remote imaging observations of the first CME detected by Solar Orbiter and BepiColombo
Möstl, C.; Harrison, R. A.; Davies, J. A. +20 more
Context. On 2020 April 19 a coronal mass ejection (CME) was detected in situ by Solar Orbiter at a heliocentric distance of about 0.8 AU. The CME was later observed in situ on April 20 by the Wind and BepiColombo spacecraft whilst BepiColombo was located very close to Earth. This CME presents a good opportunity for a triple radial alignment study,…
R-process enhancements of Gaia-Enceladus in GALAH DR3
Helmi, Amina; Matsuno, Tadafumi; Hirai, Yutaka +3 more
Context. The dominant site of production of r-process elements remains unclear despite recent observations of a neutron star merger. Observational constraints on the properties of the sites can be obtained by comparing r-process abundances in different environments. The recent Gaia data releases and large samples from high-resolution optical spect…
The MUSE Deep Lensed Field on the Hubble Frontier Field MACS J0416. Star-forming complexes at cosmological distances
Treu, T.; Castellano, M.; Pentericci, L. +21 more
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 clusters.
Aims: We present the MUSE Deep Lensed Field (MDLF) program, which is aimed at unveiling the very faint population of high redshift sources that are magn…
Redshift evolution of the underlying type Ia supernova stretch distribution
Smith, M.; Aldering, G.; Nordin, J. +7 more
The detailed nature of type Ia supernovae (SNe Ia) remains uncertain, and as survey statistics increase, the question of astrophysical systematic uncertainties arises, notably that of the evolution of SN Ia populations. We study the dependence on redshift of the SN Ia SALT2.4 light-curve stretch, which is a purely intrinsic SN property, to probe i…
The SPHERE infrared survey for exoplanets (SHINE). I. Sample definition and target characterization
Fantinel, D.; Dominik, C.; Henning, Th. +106 more
Context. Large surveys with new-generation high-contrast imaging instruments are needed to derive the frequency and properties of exoplanet populations with separations from ~5 to 300 au. A careful assessment of the stellar properties is crucial for a proper understanding of when, where, and how frequently planets form, and how they evolve. The se…
The WISSH quasars project. IX. Cold gas content and environment of luminous QSOs at z ∼ 2.4-4.7
Maiolino, R.; Fiore, F.; Marconi, A. +23 more
Context. Sources at the brightest end of the quasi-stellar object (QSO) luminosity function, during the peak epoch in the history of star formation and black hole accretion (z ∼ 2-4, often referred to as "Cosmic noon") are privileged sites to study the cycle of feeding & feedback processes in massive galaxies.
Aims: We aim to perform the …
The SPHERE infrared survey for exoplanets (SHINE). II. Observations, data reduction and analysis, detection performances, and initial results
Rouan, D.; Ménard, F.; Fantinel, D. +118 more
Context. In recent decades, direct imaging has confirmed the existence of substellar companions (exoplanets or brown dwarfs) on wide orbits (>10 au) around their host stars. In striving to understand their formation and evolution mechanisms, in 2015 we initiated the SPHERE infrared survey for exoplanets (SHINE), a systematic direct imaging surv…
The 800 pc long tidal tails of the Hyades star cluster. Possible discovery of candidate epicyclic overdensities from an open star cluster
Boffin, Henri M. J.; Jerabkova, Tereza; Beccari, Giacomo +3 more
The tidal tails of stellar clusters provide an important tool for studying the birth conditions of the clusters and their evolution, coupling, and interaction with the Galactic potential. The Gaia satellite, with its high-quality astrometric data, opened this field of study, allowing us to observe large-scale tidal tails. Theoretical models of tid…
Characterizing and correcting the proper motion bias of the bright Gaia EDR3 sources
Cantat-Gaudin, Tristan; Brandt, Timothy D.
In this paper, we characterize magnitude-dependent systematics in the proper motions of the Gaia EDR3 catalog and provide a prescription for their removal. The reference frame of bright stars (G ≲ 13) in EDR3 is known to rotate with respect to extragalactic objects, but this rotation has proven difficult to characterize and correct. We employ a sa…
Homogeneous study of Herbig Ae/Be stars from spectral energy distributions and Gaia EDR3
Montesinos, B.; Mendigutía, I.; Solano, E. +6 more
Context. Herbig Ae/Be stars (HAeBes) have so far been studied based on relatively small samples that are scattered throughout the sky. Their fundamental stellar and circumstellar parameters and statistical properties were derived with heterogeneous approaches before Gaia.
Aims: Our main goal is to contribute to the study of HAeBes from the la…