Search Publications
The atmosphere and architecture of WASP-189 b probed by its CHEOPS phase curve
Alonso, R.; Deleuil, M.; Erikson, A. +83 more
Context. Gas giants orbiting close to hot and massive early-type stars can reach dayside temperatures that are comparable to those of the coldest stars. These `ultra-hot Jupiters' have atmospheres made of ions and atomic species from molecular dissociation and feature strong day-to-night temperature gradients. Photometric observations at different…
The PLATO field selection process. I. Identification and content of the long-pointing fields
Heras, A. M.; Deleuil, M.; Rauer, H. +26 more
PLAnetary Transits and Oscillations of stars is an ESA M-class satellite planned for launch by the end of 2026 and dedicated to the wide-field search of transiting planets around bright and nearby stars, with a strong focus on discovering habitable rocky planets hosted by solar-like stars. The choice of the fields to be pointed at is a crucial tas…
The complex time and energy evolution of quasi-periodic eruptions in eRO-QPE1
Salvato, M.; Buchner, J.; Nandra, K. +8 more
Quasi-periodic eruptions (QPEs) are recurrent X-ray bursts found in the nuclei of low-mass galaxies. Their trigger mechanism is still unknown, but recent models involving one or two stellar-mass companions around the central massive (≈105 − 106 M⊙) black hole have gathered significant attention. While these models …
Newly detected open clusters in the Galactic disk using Gaia EDR3
Hao, C. J.; Xu, Y.; Lin, Z. H. +3 more
The astrometric satellite Gaia recently released part of its third data set, which provides a good opportunity to hunt for more open clusters in the Milky Way. In this work, we conduct a blind search for open clusters in the Galactic disk using a sample-based clustering search method with high spatial resolution, which is especially suited to find…
A tentative detection of He I in the atmosphere of GJ 1214 b
Sánchez-López, A.; López-Puertas, M.; Nagel, E. +27 more
The He I λ10833 Å triplet is a powerful tool for characterising the upper atmosphere of exoplanets and tracing possible mass loss. Here, we analysed one transit of GJ 1214 b observed with the CARMENES high-resolution spectrograph to study its atmosphere via transmission spectroscopy around the He I triplet. Although previous studies using lower re…
Irradiation-driven escape of primordial planetary atmospheres. II. Evaporation efficiency of sub-Neptunes through hot Jupiters
Haardt, Francesco; Rauscher, Emily; Malsky, Isaac +3 more
Making use of the publicly available 1D photoionization hydrodynamics code ATES we set out to investigate the combined effects of specific planetary gravitational potential energy (ϕp ≡ GMp/Rp) and stellar X-ray and extreme ultraviolet (XUV) irradiation (FXUV) on the evaporation efficiency (η) of moderat…
Constraints on dark matter self-interaction from the internal density profiles of X-COP galaxy clusters
Pointecouteau, E.; Eckert, D.; Ettori, S. +4 more
The fundamental properties of the postulated dark matter (DM) affect the internal structure of gravitationally bound structures. In the cold dark matter paradigm, DM particles interact only via gravity. Their distribution is well represented by an Einasto profile with shape parameter α ≈ 0.18 in the smallest dwarf galaxies or the most massive gala…
Survey of Surveys. I. The largest compilation of radial velocities for the Galaxy
Rainer, M.; Marinoni, S.; Randich, S. +8 more
Context. In the present-day panorama of large spectroscopic surveys, the amount, diversity, and complexity of the available data continuously increase. The overarching goal of studying the formation and evolution of our Galaxy is hampered by the heterogeneity of instruments, selection functions, analysis methods, and measured quantities.
Aims…
A SPHERE survey of self-shadowed planet-forming disks
Pinte, C.; Ménard, F.; Avenhaus, H. +20 more
To date, nearly two hundred planet-forming disks have been imaged at high resolution. Our propensity to study bright and extended objects does, however, bias our view of the disk demography. In this work, we aim to help alleviate this bias by analyzing fifteen disks targeted with VLT/SPHERE that look faint in scattered light. Sources were selected…
Godzilla, a monster lurks in the Sunburst galaxy
Diego, J. M.; Kelly, P.; Broadhurst, T. +4 more
We model the strong lensing effect in the galaxy cluster PSZ1 G311.65-18.48 (z = 0.443) with an improved version of the hybrid method WSLAP+. We extend the number of constraints by including the position of critical points, which are combined with the classic positional constraints of the lensed galaxies. We pay special attention to a transient ca…