Search Publications
What drives decayless kink oscillations in active-region coronal loops on the Sun?
Teriaca, Luca; Solanki, Sami K.; Long, David M. +19 more
Here, we present a study of the phenomena of decayless kink oscillations in a system of active-region (AR) coronal loops. Using high-resolution observations from two different instruments, namely the Extreme Ultraviolet Imager (EUI) on board Solar Orbiter and the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory, we follow…
Stellar limb darkening. A new MPS-ATLAS library for Kepler, TESS, CHEOPS, and PLATO passbands
Solanki, S. K.; Shapiro, A. I.; Maxted, P. F. L. +4 more
Context. The detection of the first exoplanet paved the way for the era of transit-photometry space missions with revolutionary photometric precision, whose aim is to discover new exoplanetary systems around different types of stars. With this high precision, it is possible to derive the radii of exoplanets very accurately, which is crucial for co…
Evidence of a vertical kinematic oscillation beyond the Radcliffe wave
Benjamin, R. A.; Gallagher, J. S., III; Drimmel, R. +5 more
The Radcliffe wave (RW) is a recently discovered sinusoidal vertical feature of dense gas in the proximity of the Sun. In the disk plane, it is aligned with the Local Arm. However, the origin of its vertical undulation is still unknown. This study constrains the kinematics of the RW, using young stars and open clusters as tracers, and explores the…
Self-absorption in [C II], 12CO, and H I in RCW120. Building up a geometrical and physical model of the region
Schneider, N.; Zavagno, A.; Stutzki, J. +19 more
Aims: Revealing the 3D dynamics of H II region bubbles and their associated molecular clouds and H I envelopes is important for developing an understanding of the longstanding problem as to how stellar feedback affects the density structure and kinematics of the different phases of the interstellar medium.
Methods: We employed observatio…
Stellar feedback in M 83 as observed with MUSE. II. Analysis of the H II region population: Ionisation budget and pre-SN feedback
Della Bruna, Lorenza; Robert, Carmelle; Amram, Philippe +11 more
Context. Energy and momentum injected by young, massive stars into the surrounding gas play an important role in regulating further star formation and in determining the galaxy's global properties. Before supernovae begin to explode, stellar feedback consists of two main processes: radiation pressure and photoionisation.
Aims: We study pre-su…
Upper mass-loss limits and clumping in the intermediate and outer wind regions of OB stars
Puls, J.; Najarro, F.; Traficante, A. +4 more
Context. Mass loss is a key parameter throughout the evolution of massive stars, and it determines the feedback with the surrounding interstellar medium. The presence of inhomogeinities in stellar winds (clumping) leads to severe discrepancies not only among different mass-loss rate diagnostics, but also between empirical estimates and theoretical…
Quasars as high-redshift standard candles
Vignali, C.; Gilli, R.; Civano, F. +10 more
The non-linear relation between the X-ray and ultraviolet (UV) luminosity in quasars has been used to derive quasar distances and to build a Hubble diagram at redshifts up to z ∼ 7. This cosmological application is based on the assumption of independence of the relation on redshift and luminosity. We want to test the reliability of this hypothesis…
Probabilistic classification of X-ray sources applied to Swift-XRT and XMM-Newton catalogs
Godet, Olivier; Tranin, Hugo; Webb, Natalie +1 more
Context. Serendipitous X-ray surveys have proven to be an efficient way to find rare objects, for example tidal disruption events, changing-look active galactic nuclei (AGN), binary quasars, ultraluminous X-ray sources, and intermediate mass black holes. With the advent of very large X-ray surveys, an automated classification of X-ray sources beco…
Periodic variable A-F spectral type stars in the northern TESS continuous viewing zone. I. Identification and classification
Mašek, M.; Paunzen, E.; Skarka, M. +11 more
Context. In the time of large space surveys that provide tremendous amounts of precise data, it is highly desirable to have a commonly accepted methodology and system for the classification of variable stars. This is especially important for A-F stars, which can show intrinsic brightness variations due to both rotation and pulsations.
Aims: T…
The stellar content of the ROSAT all-sky survey
Schmitt, J. H. M. M.; Czesla, S.; Robrade, J. +2 more
Aims: We present and apply a method to identify the stellar content of the ROSAT all-sky survey (RASS).
Methods: We performed a crossmatch between the RASS sources and stellar candidates selected from Gaia Early Data Release 3 (EDR3) and estimated stellar probabilities for every RASS source from the geometric properties of the match and …