Search Publications
What does a typical full disc around a post-AGB binary look like?. Radiative transfer models reproducing PIONIER, GRAVITY, and MATISSE data
Min, M.; Van Winckel, H.; Kamath, D. +2 more
Context. Stable circumbinary discs around evolved post-asymptotic giant branch (post-AGB) binary systems composed of gas and dust show many similarities with protoplanetary discs around young stellar objects. These discs can provide constraints on both binary evolution and the formation of macrostructures within circumstellar discs. Here we focus …
Investigating the origin of optical and X-ray pulsations of the transitional millisecond pulsar PSR J1023+0038
Campana, S.; Stella, L.; de Martino, D. +21 more
Context. PSR J1023+0038 is the first millisecond pulsar that was ever observed as an optical and UV pulsar. So far, it is the only optical transitional millisecond pulsar. The rotation- and accretion-powered emission mechanisms hardly individually explain the observed characteristics of optical pulsations. A synergistic model, combining these stan…
Oxygen-bearing organic molecules in comet 67P's dusty coma: First evidence for abundant heterocycles
Altwegg, K.; Fuselier, S. A.; Rubin, M. +6 more
The puzzling complexity of terrestrial biomolecules is driving the search for complex organic molecules in the interstellar medium (ISM) and serves as a motivation for many in situ studies of reservoirs of extraterrestrial organics, from meteorites and interplanetary dust particles to comets and asteroids. Comet 67P/Churyumov-Gerasimenko (67P), th…
Multiples among B stars in the Scorpius-Centaurus association
D'Orazi, V.; Nascimbeni, V.; Janson, M. +14 more
Context. The frequency, semi-major axis, and mass distribution of stellar companions likely depend on the mass of the primaries and on the environment where the stars form. These properties are very different for early- and late-type stars. However, data are largely incomplete, even for the closest environments to the Sun, preventing a cleaner vie…
Astrometry in crowded fields towards the Galactic bulge
Minniti, Dante; Rejkuba, Marina; Marchetti, Tommaso +1 more
Context. The astrometry towards the Galactic bulge is hampered by high stellar crowding and patchy extinction. This effect is particularly severe for optical surveys such as the European Space Agency satellite Gala.
Aims: In this study, we assess the consistency of proper motion measurements between optical (Gaia DR3) and near-infrared (VIRAC…
The gas mass reservoir of quiescent galaxies at cosmic noon
Magnelli, B.; Daddi, E.; Elbaz, D. +14 more
We present a 1.1 mm stacking analysis of moderately massive (log(M*/M⊙) = 10.7 ± 0.2) quiescent galaxies (QGs) at ⟨z⟩∼1.5, searching for cold dust continuum emission, which serves as an excellent tracer of dust and gas mass. Using both the recent GOODS-ALMA survey, as well as the full suite of ALMA Band-6 ancillary data in th…
Soft gamma-ray spectral and time evolution of the GRB 221009A: Prompt and afterglow emission with INTEGRAL/IBIS-PICsIT
Ubertini, Pietro; Rodi, James
Aims: The gamma-ray burst (GRB) 221009A, with its extreme brightness, has provided the opportunity to explore GRB prompt and afterglow emission behavior on short timescales with high statistics. In conjunction with detection up to very-high-energy gamma rays, studies of this event shed light on the emission processes at work in the initial ph…
Signatures of dynamic fibrils at the coronal base: Observations from Solar Orbiter/EUI
Teriaca, Luca; Solanki, Sami K.; Liu, Wei +20 more
The solar chromosphere hosts a wide variety of transients, including dynamic fibrils (DFs) that are characterised as elongated, jet-like features seen in active regions, often through Hα diagnostics. So far, these features have been difficult to identify in coronal images, primarily due to their small size and the lower spatial resolution of the c…
Investigating Gaia EDR3 parallax systematics using asteroseismology of Cool Giant Stars observed by Kepler, K2, and TESS. I. Asteroseismic distances to 12 500 red-giant stars
Khan, S.; Cantat-Gaudin, T.; Clementini, G. +10 more
Gaia EDR3 has provided unprecedented data that has generated a great deal of interest in the astrophysical community, even though systematics affect the reported parallaxes at the level of ∼10 µas. Independent distance measurements are available from asteroseismology of red-giant stars with measurable parallaxes, whose magnitude and colour r…
The hunt for formamide in interstellar ices. A toolkit of laboratory infrared spectra in astronomically relevant ice mixtures and comparisons to ISO, Spitzer, and JWST observations
van Dishoeck, E. F.; Rocha, W. R. M.; Slavicinska, K. +3 more
Context. Although solid-state pathways are expected to dominate the formation mechanisms of many complex organic molecules (COMs), very few COMs have been securely identified in interstellar ices, in stark contrast with the many COM detections in the gas phase. The launch of the James Webb Space Telescope (JWST) and its increase in sensitivity and…