Search Publications
MOCKA – A PLATO mock asteroseismic catalogue: Simulations for gravity-mode oscillators
Aigrain, S.; Plachy, E.; De Ridder, J. +14 more
Context. With the PLAnetary Transits and Oscillation of stars (PLATO) space mission set for launch in December 2026 by the European Space Agency (ESA), a new photometric legacy and a future of new scientific discoveries await the community. By exploring scientific topics outside of the core science program, the PLATO complementary science program …
Binary and grouped open clusters: A new catalogue
Baume, G.; Feinstein, C.; Palma, T. +1 more
Context. Understanding the formation and evolution of star clusters in the Milky Way requires precise identification of clusters that form binary or multiple systems. Such systems offer valuable insight into the dynamical processes and interactions that influence cluster evolution. Aims. This study aims to detect and classify star clusters in the …
Radii, masses, and transit-timing variations of the three-planet system orbiting the naked-eye star TOI-396
Fridlund, M.; Pallé, E.; Gandolfi, D. +38 more
Context. TOI-396 is an F6 V bright naked-eye star (V ≈ 6.4) orbited by three small (Rp ≈ 2 R⊕) transiting planets discovered thanks to space-based photometry from two TESS sectors. The orbital periods of the two innermost planets, namely TOI-396 b and c, are close to the 5:3 commensurability (Pb ~ 3.6 d and Pc…
Multi-wavelength study of 1eRASS J085039.9‑421151 with eROSITA, NuSTAR, and X-shooter
Santangelo, A.; Heber, U.; Dauser, T. +23 more
The eROSITA instrument on board Spectrum-Roentgen-Gamma (SRG) has completed four scans of the X-ray sky, leading to the detection of almost one million X-ray sources in eRASS1 alone, including multiple new X-ray binary candidates. We report on analysis of the X-ray binary 1eRASS J085039.9‑421151, using a ∼55 ks long NuSTAR observation, following i…
Open cluster dissolution rate and the initial cluster mass function in the solar neighbourhood: Modelling the age and mass distributions of clusters observed by Gaia
Moitinho, André; Moreira, Sandro; Almeida, Duarte
Context. The dissolution rate of open clusters (OCs) and the integration of their stars into the Milky Way's field population have been explored using their age distribution. With the advent of the Gaia mission, there is an exceptional opportunity to revisit and enhance studies covering these aspects of OCs with ages and masses from high-quality d…
Unveiling dust, molecular gas, and high star-formation efficiency in extremely UV bright star-forming galaxies at z ∼ 2.1–3.6
Pérez-Fournon, I.; Schaerer, D.; Marques-Chaves, R. +4 more
We analysed the Atacama Large Millimetre/submillimetre Array (ALMA) far-infrared (FIR), 1.3 mm, dust continuum and CO emission of 12 starburst galaxies at z ∼ 2.1 ‑ 3.6 selected for their extreme brightness in the rest-frame UV, with absolute magnitudes of ‑23.4 to ‑24.7. We also analysed their Very Large Telescope (VLT) High Acuity Wide field K-b…
Mapping the Milky Way with Gaia Bp/Rp spectra: I. Systematic flux corrections and atmospheric parameters for 68 million stars
Zhao, Gang; Chen, Yuqin; Aguado, David S. +8 more
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 have analyzed this data set to derive atmospheric parameters and identify new metal-poor stars. In addition, s…
VLTI/GRAVITY enables the determination of the first dynamical masses of a classical Be + stripped and bloated pre-subdwarf binary
Rivinius, Th.; Baade, D.; Shenar, T. +7 more
Context. HR 6819 is the first post-mass transfer binary system composed of a classical Be star and a bloated pre-subdwarf stripped star directly confirmed by interferometry. While the Be star is already spun up to near-critical rotation and possesses a self-ejected viscous Keplerian disk, the stripped star is found in a short-lived evolutionary st…
A closer look at LTT 9779b:The ESPRESSO endeavour to pierce the atmospheric veil
Palle, E.; López-Morales, M.; Jenkins, J. S. +9 more
Context. The proliferation of exoplanet discoveries, particularly within such exotic environments as the Neptune desert, challenges our understanding of planetary atmospheres undergoing intense irradiation. The unexpected discovery of LTT 9779 b, an ultra-hot Neptune deep within this desert offers a prime opportunity for in-depth atmospheric studi…
A new look at the extragalactic very high energy sky: Searching for TeV-emitting candidates among the X-ray-bright, non-Fermi-detected blazar population
Marchesi, Stefano; Iuliano, Antonio; Prandini, Elisa +8 more
We present the results of a multiwavelength study of blazars selected from the fifth ROMABZCAT catalog. We selected from this sample a subsample of 2435 objects that have at least one counterpart in one of the three main archival X-ray catalogs, namely the fourth release of the XMM-Newton Survey Science Catalogue, the second release of the Chandra…