Search Publications
Hoinga: a supernova remnant discovered in the SRG/eROSITA All-Sky Survey eRASS1
Merloni, A.; Nicastro, L.; Becker, W. +4 more
Supernova remnants (SNRs) are observable for about (6−15) × 104 yr before they fade into the Galactic interstellar medium. With a Galactic supernova rate of approximately two per century, we can expect to have of the order of 1200 SNRs in our Galaxy. However, only about 300 of them are known to date, with the majority having been discov…
Distance and extinction to the Milky Way spiral arms along the Galactic centre line of sight
Nogueras-Lara, F.; Neumayer, N.; Schödel, R.
Context. The position of the Sun inside the disc of the Milky Way significantly hampers the study of the spiral arm structure given the high amount of dust and gas along the line of sight, and the overall structure of this disc has therefore not yet been fully characterised.
Aims: We aim to analyse the spiral arms in the line of sight towards…
The HD 98800 quadruple pre-main sequence system. Towards full orbital characterisation using long-baseline infrared interferometry
Bayo, A.; Olofsson, J.; Haubois, X. +8 more
Context. HD 98800 is a young (∼10 Myr old) and nearby (∼45 pc) quadruple system, composed of two spectroscopic binaries orbiting around each other (AaAb and BaBb), with a gas-rich disk in polar configuration around BaBb. While the orbital parameters of BaBb and AB are relatively well constrained, this is not the case for AaAb. A full characterisat…
Multi-thermal atmosphere of a mini-solar flare during magnetic reconnection observed with IRIS
Heinzel, Petr; Aulanier, Guillaume; Schmieder, Brigitte +4 more
Context. The Interface Region Imaging Spectrograph (IRIS) with its high spatial and temporal resolution facilitates exceptional plasma diagnostics of solar chromospheric and coronal activity during magnetic reconnection.
Aims: The aim of this work is to study the fine structure and dynamics of the plasma at a jet base forming a mini-flare bet…
Confirmation and physical characterization of the new bulge globular cluster Patchick 99 from the VVV and Gaia surveys
Minniti, D.; Ripepi, V.; Alonso-García, J. +4 more
Context. Globular clusters (GCs) are recognised as important tools for understanding the formation and evolution of the Milky Way (MW) because they are the oldest objects in our Galaxy. Unfortunately, the known sample in our MW is still incomplete, especially towards the innermost regions, because of the high differential reddening, extinction, an…
Moving solar radio bursts and their association with coronal mass ejections
Kilpua, E. K. J.; Kumari, A.; Morosan, D. E. +1 more
Context. Solar eruptions, such as coronal mass ejections (CMEs), are often accompanied by accelerated electrons that can in turn emit radiation at radio wavelengths. This radiation is observed as solar radio bursts. The main types of bursts associated with CMEs are type II and type IV bursts that can sometimes show movement in the direction of the…
The CARMENES search for exoplanets around M dwarfs. Spectroscopic orbits of nine M-dwarf multiple systems, including two triples, two brown dwarf candidates, and one close M-dwarf-white dwarf binary
Amado, P. J.; Caballero, J. A.; Pallé, E. +33 more
Context. M dwarfs are ideal targets for the search of Earth-size planets in the habitable zone using the radial velocity method, and are attracting the attention of many ongoing surveys. One of the expected results of these surveys is that new multiple-star systems have also been found. This is the case also for the CARMENES survey, thanks to whic…
The LOFAR Two-metre Sky Survey Deep Fields. A new analysis of low-frequency radio luminosity as a star-formation tracer in the Lockman Hole region
Bondi, M.; Prandoni, I.; Wang, L. +14 more
We have exploited LOFAR deep observations of the Lockman Hole field at 150 MHz to investigate the relation between the radio luminosity of star-forming galaxies (SFGs) and their star-formation rates (SFRs), as well as its dependence on stellar mass and redshift. The adopted source classification, SFRs, and stellar masses are consensus estimates ba…
Non-LTE inversions of a confined X2.2 flare. I. The vector magnetic field in the photosphere and chromosphere
Leenaarts, J.; Pomoell, J.; Price, D. J. +7 more
Context. Obtaining an accurate measurement of magnetic field vector in the solar atmosphere is essential for studying changes in field topology during flares and reliably modelling space weather.
Aims: We tackle this problem by applying various inversion methods to a confined X2.2 flare that occurred in NOAA AR 12673 on 6 September 2017 and c…
Discovery of a new nearby globular cluster with extreme kinematics located in the extension of a halo stream
Smith, Leigh C.; Minniti, Dante; Fernández-Trincado, José G. +3 more
Context. We report the discovery of VVV-CL160, a new nearby globular cluster (GC) with extreme kinematics, located in the Galactic plane at l = 10.1477 deg, b = 0.2999 deg.
Aims: We aim to characterize the physical properties of this new GC and place it in the context of the Milky Way, exploring its possible connection with the known GC NGC 6…