Magnetic waves are a relevant component in the dynamics of the solar atmosphere. Their significance has increased because of their potential as a remote...
Wave Leakage and Resonant Absorption in a Loop Embedded in a Coronal Arcade
We investigate the temporal evolution of impulsively generated perturbations in a potential coronal arcade with an embedded loop. For the initial configuration...
Wave Propagation and Shock Formation in Different Magnetic Structures
Velocity oscillations "measured" simultaneously at the photosphere and the chromosphere—from time series of spectropolarimetric data in the 10830 Å region—of...
Wavelength Calibration for OSIRIS/GTC Tunable Filters
OSIRIS (Optical System for Imaging and low Resolution Integrated Spectroscopy) is the first light instrument of the Gran Telescopio Canarias (GTC). It provides...
Wavelength Dependence of Activity-induced Photometric Variations for Young Cool Stars in Hyades
We investigate photometric variations due to stellar activity that induce systematic radial-velocity errors (so-called "jitter") for the four targets in the...
Wavelength-dependent kinematics in the dusty inclined galaxy NGC 2146
We present measurements of the apparent rotation curves of the dusty inclined spiral NGC 2146 taken using conventional long-slit spectroscopy in the red and...
WD 1145+017 photometric observations during eight months of high activity
WD 1145+017 was observed from 2015 November to 2016 July for the purpose of characterizing transit behavior of the white dwarf by dust clouds thought to be...
WD1032 + 011, an inflated brown dwarf in an old eclipsing binary with a white dwarf
We present the discovery of only the third brown dwarf known to eclipse a non-accreting white dwarf. Gaia parallax information and multicolour photometry...
Weak and post-T Tauri stars around B-type members of the Scorpius-Centaurus OB association
I report medium-resolution spectroscopic observations of six H emission-line stars proposed by Meyer et al. (1993) to be T Tauri stars formed in the vicinity of...