Search Publications
Two-horn quiescent prominence observed in Hα and Mg II h&k lines with THEMIS and IRIS
Barczynski, Krzysztof; Schmieder, Brigitte; Labrosse, Nicolas +2 more
Context. Prominences are large magnetic structures in the corona filled by cool plasma with fast evolving fine structure.
Aims: We aim to better understand the plasma conditions in the fine structure of a quiescent prominence including two transient horns observed at the bottom of the cavity using the high resolution Interface Region Imaging …
High-contrast detection of exoplanets with a kernel-nuller at the VLTI
Ireland, Michael J.; Martinache, Frantz; N'Diaye, Mamadou +5 more
Context. The conventional approach to direct imaging is to use a single aperture coronagraph with wavefront correction via extreme adaptive optics (AO). Such systems are limited to observing beyond an inner working angle (IWA) of a few λ/D. Nulling interferometry with two or more apertures will enable detections of companions at separations at and…
Testing ultralow amplitude Cepheid candidates in the Galactic disk by TESS and Gaia
Bódi, Attila; Szabó, Róbert; Molnár, László +1 more
Ultralow amplitude (ULA) and strange mode Cepheids are thought to be pulsating variable stars that are near to or are at the edges of the classical instability strip. Until now, a few dozen such variable star candidates have been found both in the Large Magellanic Cloud and the Milky Way. For the present work, we studied six ULA Cepheid candidates…
Exploring the environment, magnetic fields, and feedback effects of massive high-redshift galaxies with [C II]
Knudsen, K. K.; König, S.; Gullberg, B. +3 more
Context. Massive galaxies are expected to grow through different transformative evolutionary phases. High-redshift starburst galaxies and quasars are thought to be such phases and thus provide insight into galaxy evolution. Several physical mechanisms are predicted to play an important role in driving these phases; for example, interaction with co…
Study of a sample of faint Be stars in the exofield of CoRoT. III. Global spectroscopic characterization and astrophysical parameters of the central stars
Frémat, Y.; Zorec, J.; Hubert, A. M. +1 more
Context. The search and interpretation of non-radial pulsations from Be star light curves observed with the CoRoT satellite requires high-quality stellar astrophysical parameters.
Aims: The present work is devoted to the spectroscopic study of a sample of faint Be stars observed by CoRoT in the fourth long run (LRA02).
Methods: The astro…
Characterising the interior of five inner Saturnian moons using Cassini ISS data
Lainey, V.; Rambaux, N.; Zhang, Q. +2 more
Context. The Cassini-Huygens space mission provided a huge amount of data for the Saturnian system. While the mission ended in September 2017, there is still much information to be retrieved from the data.
Aims: Here, from their orbital motion, we infer the interior of the five inner Saturnian moons, Atlas, Prometheus, Pandora, Janus, and Epi…
L 363-38 b: A planet newly discovered with ESPRESSO orbiting a nearby M dwarf star
Sartori, Lia F.; Lendl, Monika; Cugno, Gabriele +7 more
Context. Planets around stars in the solar neighbourhood will be prime targets for characterisation with upcoming large space- and ground-based facilities. Since large-scale exoplanet searches will not be feasible with such telescopes, it is crucial to use currently available data and instruments to find possible target planets before next-generat…
VISIONS: the VISTA Star Formation Atlas. II. The data processing pipeline
Meingast, Stefan; Rottensteiner, Alena; Bouy, Hervé +3 more
The VISIONS public survey provides large-scale, multi-epoch imaging of five nearby star-forming regions at sub-arcsecond resolution in the near-infrared. All data collected within the program and provided by the European Southern Observatory (ESO) science archive are processed with a custom end-to-end pipeline infrastructure to provide science-rea…
Investigating the vertical distribution of the disk as a function of radial action
Zhao, Gang; Chen, Yuqin; Du, Cuihua +1 more
Aims: As heating processes can broaden the distributions of radial actions and the vertical distributions of the Galactic disks, we investigate the vertical distribution of the Galactic disks as a function of radial action based on Apache Point Observatory Galactic Evolution Experiment (APOGEE) and Gaia data in order to deepen our understandi…
New members of the Lupus I cloud based on Gaia astrometry. Physical and accretion properties from X-shooter spectra
Bayo, A.; Alcalá, J. M.; Montalto, M. +13 more
We characterize twelve young stellar objects (YSOs) located in the Lupus I region, spatially overlapping with the Upper Centaurus Lupus (UCL) sub-stellar association. The aim of this study is to understand whether the Lupus I cloud has more members than what has been claimed so far in the literature and gain a deeper insight into the global proper…