Search Publications
Extreme-ultraviolet fine structure and variability associated with coronal rain revealed by Solar Orbiter/EUI HRIEUV and SPICE
Barczynski, K.; Peter, H.; Chitta, L. P. +34 more
Context. Coronal rain is the most dramatic cooling phenomenon of the solar corona. Recent observations in the visible and UV spectrum have shown that coronal rain is a pervasive phenomenon in active regions. Its strong link with coronal heating through the thermal non-equilibrium (TNE) - thermal instability (TI) scenario makes it an essential diag…
Internal gravity waves in massive stars. II. Frequency analysis across stellar mass
Handler, G.; Ratnasingam, R. P.; Rogers, T. M. +4 more
Stars that are over 1.6 solar masses are generally known to possess convective cores and radiative envelopes, which allows for the propagation of outwardly travelling internal gravity waves (IGWs). Here, we study the generation and propagation of IGWs in such stars using two-dimensional, fully non-linear hydrodynamical simulations with realistic s…
Solar energetic electron events measured by MESSENGER and Solar Orbiter. Peak intensity and energy spectrum radial dependences: Statistical analysis
Lario, D.; Rodríguez-Pacheco, J.; Wimmer-Schweingruber, R. F. +10 more
Context. We present a list of 61 solar energetic electron (SEE) events measured by the MESSENGER mission and the radial dependences of some parameters associated with these SEE events. The analysis covers the period from 2010 to 2015, when the heliocentric distance of MESSENGER varied between 0.31 and 0.47 au. We also show the radial dependences f…
Dark dust. II. Properties in the general field of the diffuse ISM
Siebenmorgen, R.
Distance estimates derived from spectroscopy or parallax have been unified by considering extinction by large grains. The addition of such a population of what is called dark dust to models of the diffuse interstellar medium is tested against a contemporary set of observational constraints. By respecting representative solid-phase element abundanc…
Probing the faint-end luminosity function of Lyman-alpha emitters at 3 < z < 7 behind 17 MUSE lensing clusters
Bauer, F. E.; Mahler, G.; Richard, J. +12 more
Context. This paper presents a study of the galaxy Lyman-alpha luminosity function (LF) using a large sample of 17 lensing clusters observed by the Multi Unit Spectroscopic Explorer (MUSE) at the ESO Very Large Telescope (VLT). The magnification resulting from strong gravitational lensing by clusters of galaxies and MUSE spectroscopic capabilities…
HARPS-N high spectral resolution observations of Cepheids. II. The impact of the surface-brightness color relation on the Baade-Wesselink projection factor of η Aql
Poretti, E.; Rainer, M.; Kervella, P. +16 more
Context. The Baade-Wesselink (BW) method of distance determination of Cepheids is used to calibrate the distance scale. Various versions of this method are mainly based on interferometry and/or the surface-brightness color relation (SBCR).
Aims: We quantify the impact of the SBCR, its slope, and its zero point on the projection factor. This q…
The galaxy mass-size relation in CARLA clusters and proto-clusters at 1.4 < z < 2.8: Larger cluster galaxy sizes
Noirot, Gaël; Gonzalez, Anthony H.; Stern, Daniel +12 more
We study the galaxy mass-size relation in 15 spectroscopically confirmed clusters at 1.4 < z < 2.8 from the CARLA survey. Our clusters span a total stellar mass in the range 11.3 < log(M*c/M⊙) < 12.6 (with an approximate halo mass in the range 13.5 ≲ log(Mhc/M⊙) ≲ 14.5).…
Galactic runaway O and Be stars found using Gaia DR3
Paredes, J. M.; Ribó, M.; Carretero-Castrillo, M.
Context. A relevant fraction of massive stars are runaway stars. These stars move with a significant peculiar velocity with respect to their environment.
Aims: We aim to discover and characterize the population of massive and early-type runaway stars in the GOSC and BeSS catalogs using Gaia DR3 astrometric data.
Methods: We present a two…
Temporal variation of the photometric magnetic activity for the Sun and Kepler solar-like stars
García, R. A.; Mathur, S.; Jiménez, A. +9 more
Context. The photometric time series of solar-like stars can exhibit rotational modulation, that is, brightness variations due to active regions co-rotating with the stellar surface. These signatures allow us to constrain properties of stellar rotation and magnetic activity.
Aims: In this work we investigate the behavior, particularly the var…
Streamlined lensed quasar identification in multiband images via ensemble networks
Eilers, Anna-Christina; Yue, Minghao; Suyu, Sherry H. +6 more
Quasars experiencing strong lensing offer unique viewpoints on subjects related to the cosmic expansion rate, the dark matter profile within the foreground deflectors, and the quasar host galaxies. Unfortunately, identifying them in astronomical images is challenging since they are overwhelmed by the abundance of non-lenses. To address this, we ha…