Search Publications
A polarimetric study of asteroids in comet-like orbits
Watanabe, Makoto; Imai, Masataka; Kim, Yoonyoung +16 more
Context. Asteroids in comet-like orbits (ACOs) consist of asteroids and dormant comets. Due to their similar appearance, it is challenging to distinguish dormant comets from ACOs via general telescopic observations. Surveys for discriminating dormant comets from the ACO population have been conducted via spectroscopy or optical and mid-infrared ph…
No detection of SO2, H2S, or OCS in the atmosphere of Mars from the first two Martian years of observations from TGO/ACS
Forget, F.; Montmessin, F.; Fedorova, A. A. +13 more
Context. The detection of sulphur species in the Martian atmosphere would be a strong indicator of volcanic outgassing from the surface of Mars.
Aims: We wish to establish the presence of SO2, H2S, or OCS in the Martian atmosphere or determine upper limits on their concentration in the absence of a detection.
Method…
Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): Scattered light detection of a possible disk wind in RY Tau
Waters, L. B. F. M.; Ginski, C.; Garufi, A. +14 more
Context. Disk winds are an important mechanism for accretion and disk evolution around young stars. The accreting intermediate-mass T-Tauri star RY Tau has an active jet and a previously known disk wind. Archival optical and new near-infrared observations of the RY Tau system show two horn-like components stretching out as a cone from RY Tau. Scat…
The SHARDDS survey: limits on planet occurrence rates based on point sources analysis via the Auto-RSM framework
Marshall, J. P.; del Burgo, C.; Absil, O. +7 more
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-stellar companions with separations from 5 to 300 au.
Aims: In this context, our study aims to detect and char…
Quasi-stellar objects and galaxy mass density profiles derived using the submillimetre galaxies magnification bias
Bonavera, L.; González-Nuevo, J.; Cueli, M. M. +3 more
Context. The magnification bias on the submillimetre galaxies (SMGs) is a gravitational lensing effect, where the SMGs are used as background lensed galaxies. This effect can be used to investigate the mass density profiles of different types of foreground lenses.
Aims: In this work, we want to exploit the magnification bias of the SMGs using…
Monitoring accretion rate variability in the Orion Nebula Cluster with the Wendelstein Wide Field Imager
Manara, C. F.; Preibisch, T.; Ercolano, B. +2 more
Context. The understanding of the accretion process has a central role in the understanding of star and planet formation.
Aims: We aim to test how accretion variability influences previous correlation analyses of the relation between X-ray activity and accretion rates, which is important for understanding the evolution of circumstellar disks …
TESS search for substellar companions through pulsation timing of δ Scuti stars. I. Discovery of companions around Chang 134 and V393 Car
Piotto, G.; Nascimbeni, V.; Vaulato, V.
Early-type main-sequence pulsating stars such as δ Scuti variables are one of the least explored class of targets in the search for exoplanets. Pulsation timing (PT) is an alternative technique to the most effective search methods. It exploits the light-travel-time effect (LTTE) to infer the presence of additional massive bodies around a pulsating…
Identification of new M 31 star cluster candidates from PAndAS images using convolutional neural networks
Liu, Wei; Chen, Bingqiu; Ma, Jun +7 more
Context. Identification of new star cluster candidates in M 31 is fundamental for the study of the M 31 stellar cluster system. The machine-learning method convolutional neural network (CNN) is an efficient algorithm for searching for new M 31 star cluster candidates from tens of millions of images from wide-field photometric surveys.
Aims: W…
eROSITA study of the globular cluster 47 Tucanae
Sasaki, Manami; Bulbul, Esra; Becker, Werner +7 more
Aims: We present the results of the analysis of five observations of the globular clutser 47 Tucanae (47 Tuc) with the extended Roentgen Survey with an Imaging Telescope Array (eROSITA) on board the Spektrum-Roentgen-Gamma (Spektr-RG, SRG). We study the X-ray population in the field of one of the most massive globular clusters in our Milky Wa…
A potential new phase of massive star formation. A luminous outflow cavity centred on an infrared quiet core
Schneider, N.; Bontemps, S.; Peretto, N. +4 more
Context. Due to the sparsity and rapid evolution of high-mass stars, a detailed picture of the evolutionary sequence of massive protostellar objects still remains to be drawn. Some of the early phases of their formation are so short that only a select number of objects throughout the Milky Way currently find themselves spending time in those phase…