Search Publications
Physical and chemical structure of the Serpens filament: Fast formation and gravity-driven accretion
Menten, K. M.; Belloche, A.; Henkel, C. +5 more
Context. The Serpens filament, a prominent elongated structure in a relatively nearby molecular cloud, is believed to be at an early evolutionary stage, so studying its physical and chemical properties can shed light on filament formation and early evolution.
Aims: The main goal is to address the physical and chemical properties as well as th…
3He-rich solar energetic particle events observed on the first perihelion pass of Solar Orbiter
Lario, D.; Rodríguez-Pacheco, J.; Wimmer-Schweingruber, R. F. +19 more
We report observations of five impulsive solar energetic particle (SEP) events observed inside 1 au during the first perihelion pass of the Solar Orbiter mission, which was launched in February 2020. These small events were all reasonably associated with active regions observed from Earth but which had rotated out of view by the time of the Solar …
Broadband X-ray spectral variability of the pulsing ULX NGC 1313 X-2
Cusumano, G.; Fabian, A. C.; Pinto, C. +12 more
Context. It is thought that ultraluminous X-ray sources (ULXs) are mainly powered by super-Eddington accreting neutron stars or black holes as shown by the recent discovery of X-ray pulsations and relativistic winds.
Aims: This work presents a follow-up study of the spectral evolution over two decades of the pulsing ULX NGC 1313 X-2 in order …
Exploring the radial evolution of interplanetary coronal mass ejections using EUHFORIA
Zhukov, A. N.; Rodriguez, L.; Poedts, S. +2 more
Context. Coronal mass ejections (CMEs) are large-scale eruptions coming from the Sun and transiting into interplanetary space. While it is widely known that they are major drivers of space weather, further knowledge of CME properties in the inner heliosphere is limited by the scarcity of observations at heliocentric distances other than 1 au. In a…
The effects of the initial mass function on Galactic chemical enrichment
Lapi, A.; Bressan, A.; Grisoni, V. +7 more
Context. We have been seeing mounting evidence that the stellar initial mass function (IMF) might extend far beyond the canonical Mi ∼ 100 M⊙ limit, but the impact of such a hypothesis on the chemical enrichment of galaxies is yet to be clarified.
Aims: We aim to address this question by analysing the observed abundances…
Simulating the infrared sky with a SPRITZ
Pozzi, F.; Rodighiero, G.; Feltre, A. +6 more
Aims: Current hydrodynamical and semi-empirical simulations of galaxy formation and evolution have difficulties in reproducing the number densities of infrared-detected galaxies. Therefore, a phenomenological simulation tool that is new and versatile is necessary to reproduce current and predict future observations at infrared (IR) wavelength…
Analysis of apsidal motion in eclipsing binaries using TESS data. I. A test of gravitational theories
Ribas, I.; Anglada-Escudé, G.; Morales, J. C. +3 more
Context. The change in the argument of periastron of eclipsing binaries, that is, the apsidal motion caused by classical and relativistic effects, can be measured from variations in the difference between the time of minimum light of the primary and secondary eclipses. Poor apsidal motion rate determinations and large uncertainties in the classica…
A KMOS survey of the nuclear disk of the Milky Way. I. Survey design and metallicities
Schultheis, M.; Prieto, M. A.; Fritz, T. K. +7 more
Context. In the central few degrees of the bulge of the Milky Way there is a flattened structure of gas, dust, and stars, known as the central molecular zone, that is similar to nuclear disks in other galaxies. As a result of extreme foreground extinction, we possess only sparse information about the (mostly old) stellar population of the nuclear …
The dipper population of Taurus seen with K2
Cody, Ann Marie; Rebull, Luisa M.; Roggero, Noemi +1 more
Context. Dippers are typically low-mass, pre-main-sequence stars that display dips in their light curves. These dips have been attributed to dusty warps that form in the inner part of the disk.
Aims: Our goal is to derive the characteristics of dipper stars in Taurus to assess the physical mechanisms that induce dipper light curves.
Meth…
Weighing the Galactic disk using phase-space spirals. I. Tests on one-dimensional simulations
de Salas, P. F.; Widmark, A.; Laporte, C.
We present a new method for inferring the gravitational potential of the Galactic disk, using the time-varying structure of a phase-space spiral in the (z, w)-plane (where z and w represent vertical position and vertical velocity). Our method of inference extracts information from the shape of the spiral and disregards the bulk density distributio…