In order to search for meridional circulation in the solar envelope, we have applied ring diagram analysis to a set of small regions over the surface. The...
Mesh-free hydrodynamics in PKDGRAV3 for galaxy formation simulations
We extend the state-of-the-art N-body code PKDGRAV3 with the inclusion of mesh-free gas hydrodynamics for cosmological simulations. Two new hydrodynamic solvers...
Mesogranulation and the Solar Surface Magnetic Field Distribution
The relation of the solar surface magnetic field with mesogranular cells is studied using high spatial (≈100 km) and temporal (≈30 s) resolution data obtained...
Metal-line emission from the warm-hot intergalactic medium - I. Soft X-rays
Emission lines from metals offer one of the most promising ways to detect the elusive warm-hot intergalactic medium (WHIM; 105 T 107K), which is thought to...
Metal-line emission from the warm-hot intergalactic medium - II. Ultraviolet
Approximately half the baryons in the local Universe are thought to reside in the warm-hot intergalactic medium (WHIM), i.e. diffuse gas with temperatures in...
Metal-rich Planetary Nebulae in the Outer Reaches of M31
Spectroscopic data of two relatively [O III]-luminous planetary nebulae (PNe) have been obtained with the 10.4 m Gran Telescopio Canarias. M174 and M2496 are...
Metallicities from high-resolution spectra of 49 RR Lyrae variables
Accurate metallicities of RR Lyrae are extremely important in constraining period-luminosity-metallicity (PLZ) relationships, particularly in the near-infrared...
Metallicities in M dwarfs: Investigating different determination techniques
Deriving metallicities for solar-like stars follows well-established methods, but for cooler stars such as M dwarfs, the determination is much more complicated...
Metallicities, Age-Metallicity Relationships, and Kinematics of Red Giant Branch Stars in the Outer Disk of the Large Magellanic Cloud
The outer disk of the Large Magellanic Cloud (LMC) is studied in order to unveil clues about its formation and evolution. Complementing our previous studies in...