A Test of Newton's Law of Gravity in the Weak Acceleration Regime
A pilot experiment suitable to test Newton's law of gravity down to the regime of acceleration typical of galaxies has been carried out in Omega Centauri. Stars...
We describe a scenario for the topology of the magnetic field in penumbrae that accounts for recent observations showing upflows, downflows, and reverse...
A trimodality in the distribution of star formation in galactic bars
We report a trimodal behaviour of the spatial distribution of ionised gas within bars in the S 4G survey, in which star-forming bars are most common among late...
A UKIDSS-based search for low-mass stars and small stellar clumps in off-cloud parts of young star-forming regions *
The form and universality of the mass function of young and nearby star-forming regions is still under debate. Its relation to the stellar density, its mass...
A User-Friendly Code to Diagnose Chromospheric Plasmas
The physical interpretation of spectropolarimetric observations of lines of neutral helium, such as those of the 10830 Å multiplet, represents an excellent...
A Value Added Catalog of Stellar Atmospheric Parameters for SDSS DR-3
We report atmospheric parameter estimates (Teff, log g, [Fe/H]) and other information (radial velocities, proper motions, distance estimates) for roughly 40,000...