Context. A substantial fraction of cosmic baryons is expected to hide in the form of diffuse warm-hot intergalactic medium (WHIM) at X-ray temperatures (T = 10...
We examine the distribution of the [O/Fe] abundance ratio in stars across the Galactic disk using H-band spectra from the Apache Point Galactic Evolution...
COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses. IX. Time delays, lens dynamics and baryonic fraction in HE 0435-1223
We present accurate time delays for the quadruply imaged quasar HE 0435-1223. The delays were measured from 575 independent photometric points obtained in the R...
Context. Empirical libraries of stellar spectra play an important role in different fields. For example, they are used as reference for the automatic...
Coupling of fast and Alfvén waves in a straight bounded magnetic field with density stratification
The theoretical understanding of the linear standing or propagating magnetohydrodynamic waves in a variety of solar coronal structures is far from complete...
COYOTES II: SPOT properties and the origin of photometric period variations in T Tauri stars.
We present the results of a new multi-site campaign (COYOTES II) to monitor the light variations of T Tauri stars (TTS) of the Taurus-Auriga dark cloud. The...
COYOTES III: observational evidence for a lower limit to the rotational velocity of ZAMS G and K dwarfs.
In order to provide additional constraints to current models of angular momentum evolution of solar-type stars, we have conducted a period-determination program...
COYOTES IV: the rotational periods of low-mass Post-T Tauri stars in Taurus.
We monitored the light variations of 58 weak-line T Tauri stars in Taurus, recently discovered in the X-ray wavelength range during the ROSAT All-Sky Survey. We...
Coyotes-I - the Photometric Variability and Rotational Evolution of T-Tauri Stars
In a multi-site photometric campaign to monitor T Tauri stars (TTS) in the Taurus-Auriga cloud over more than two months - dubbed Coordinated Observations of...