Search Publications
J-PLUS: Systematic impact of metallicity on photometric calibration with the stellar locus
Hernández-Monteagudo, C.; Hernán-Caballero, A.; Tremblay, P. -E. +19 more
Aims: We present the photometric calibration of the twelve optical passbands for the Javalambre Photometric Local Universe Survey (J-PLUS) second data release (DR2), comprising 1088 pointings of two square degrees, and study the systematic impact of metallicity on the stellar locus technique.
Methods: The [Fe/H] metallicity from the Larg…
Towards a more complete sample of binary central stars of planetary nebulae with Gaia
Rejkuba, M.; Walton, N. A.; Chornay, N. +3 more
Context. Many if not most planetary nebulae (PNe) are now thought to be the outcome of binary evolutionary scenarios. However, only a few percent of the PNe in the Milky Way are known to host binary systems. The high-precision repeated observing and long time baseline of Gaia make it well suited for detecting new close binaries through photometric…
Reconstructing solar irradiance from historical Ca II K observations. I. Method and its validation
Solanki, Sami K.; Chatzistergos, Theodosios; Ermolli, Ilaria +5 more
Context. Knowledge of solar irradiance variability is critical to Earth's climate models and understanding the solar influence on Earth's climate. Direct solar irradiance measurements have only been available since 1978. Reconstructions of past variability typically rely on sunspot data. However, sunspot records provide only indirect information o…
Multi-spacecraft observations of the structure of the sheath of an interplanetary coronal mass ejection and related energetic ion enhancement
Vainio, R.; Kilpua, E. K. J.; Lavraud, B. +18 more
Context. Sheath regions ahead of coronal mass ejections (CMEs) are large-scale heliospheric structures that form gradually with CME expansion and propagation from the Sun. Turbulent and compressed sheaths could contribute to the acceleration of charged particles in the corona and in interplanetary space, but the relation of their internal structur…
What happened before?. Disks around the precursors of young Herbig Ae/Be stars
Waters, L. B. F. M.; Dominik, C.; Valegård, P. -G.
Context. Planets form in circumstellar disks around pre-main-sequence stars. A key question is, how do the formation and evolution of protoplanetary disks depend on stellar mass? Studies of circumstellar disks at infrared and submillimeter wavelengths around intermediate-mass Herbig Ae/Be stars have revealed disk structures such as cavities, gaps,…
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…