Observations from massive stars in H II regions can help to clarify theories of massive star formation because they show the degree of isolation under which massive stars can be formed. We present a new survey, called 'A-SMASHeR', consisting of massive stars associated to not yet characterized H II regions that are either more distant or more

We analyze Atacama Large Millimeter Array (ALMA) observations of the CO(6-5) molecular line and the 432 μm continuum emission from the circumnuclear disk (CND) and the putative torus of the Seyfert 2 galaxy NGC 1068. The kinematics of both the CND and the torus show non-circular motions that are caused by outflows from the AGN. We compare the ALMA

We studied the physical parameters of the penumbra in a large and fully developed sunspot, one of the largest over the last two solar cycles, by using full-Stokes measurements taken at the photospheric Fe I 617.3 nm and chromospheric Ca II 854.2 nm lines with the Interferometric Bidimensional Spectrometer. Inverting measurements with the Non-LTE

We report on the confirmation and mass determination of a transiting planet orbiting the old and inactive G7 dwarf star HD 219666 (M⋆ = 0.92 ± 0.03 M⊙, R⋆ = 1.03 ± 0.03 R⊙, τ⋆ = 10 ± 2 Gyr). With a mass of Mb = 16.6 ± 1.3 M⊕, a radius of Rb = 4.71 ± 0.17 R⊕, and an orbital period of Porb ≃ 6 days, HD 219666 b is a new member of a rare class of

We observed the transits of six hot Jupiters with the Gran Telescopio de Canarias (GTC). The planets cover a large range of physical parameters such as planetary temperature, surface gravity, mass, radii and scale height. This broad range of physical parameters allowed us to characterize different hot-Jupiter atmospheres. The transits were observed

Correlations between the radio continuum, infrared, and CO emissions are known to exist for several types of galaxies and across several orders of magnitude. However, the low-mass, low-luminosity, and low-metallicity regime of these correlations is not well known. A sample of metal-rich and metal-poor dwarf galaxies from the literature has been