We present time-resolved optical spectroscopy of the cataclysmic variable S193. The emission lines are remarkably similar to those of V795 Her and exhibit high...
S266: a ring nebula around a Galactic B[e] supergiant?
A narrow-band Hα image and high-resolution spectroscopy have been obtained in order to investigate the nature of S266 and its central star MWC 137. The analysis...
S4N: A spectroscopic survey of stars in the solar neighborhood. The Nearest 15 pc
We report the results of a high-resolution spectroscopic survey of all the stars more luminous than M_V = 6.5 mag within 14.5 pc from the Sun. The Hipparcos...
Sacred Architecture Orientation across the Mediterranean: A Comparative Statistical Analysis
The idea of temporality and how this concept is introduced in the ritual domain could be investigated in past cultures through measurements of the orientation...
Saharan mineral dust outbreaks observed over the North Atlantic island of La Palma in summertime between 1984 and 2012
We estimate the frequency of Saharan mineral dust outbreak events observed over the North Atlantic island of La Palma based on in situ nightly atmospheric...
Sailing under the Magellanic Clouds: a DECam view of the Carina dwarf
We present deep optical photometry from the DECam imager on the 4 m Blanco telescope of over 12 deg2 around the Carina dwarf spheroidal, with complete coverage...
SALT reveals the barium central star of the planetary nebula Hen 2-39
Classical barium stars are binary systems which consist of a late-type giant enriched in carbon and slow neutron capture (s-process) elements and an evolved...
SALT3-NIR: Taking the Open-source Type Ia Supernova Model to Longer Wavelengths for Next-generation Cosmological Measurements
A large fraction of Type Ia supernova (SN Ia) observations over the next decade will be in the near-infrared (NIR), at wavelengths beyond the reach of the...
Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution
The near-Earth asteroid (162173) Ryugu is thought to be a primitive carbonaceous object that contains hydrated minerals and organic molecules. We report sample...