[Mg/Fe] and variable initial mass function: Revision of [α/Fe] for massive galaxies
Observations of nearby massive galaxies have revealed that they are older and richer in metals and magnesium than their low-mass counterparts. In particular...
``Explosion'' and Intensification of Magnetic Flux Tubes
A magnetic flux tube anchored at the bottom of the solar convection zone and rising toward the surface as a result of an undulatory instability can be affected...
¿Atrapando el solsticio? Un análisis crítico de la orientación de los templos de Deir el-Bahari
Resumen: Durante campañas realizadas la década pasada en el marco de la Misión Arqueoastronómica del Egipto antiguo se estudiaron los templos de Deir el-Bahari...
ɛ Indi Ba, Bb: a detailed study of the nearest known brown dwarfs
The discovery of ɛ Indi Ba, Bb, a binary brown dwarf system very close to the Sun, makes possible a concerted campaign to characterise the physical parameters...
We have carried out high angular resolution near-infrared imaging and low-resolution (R˜1000) spectroscopy of the nearest known brown dwarf, varepsilon Indi B...
β1 Monocerotis: oscillations and chromospheric structure
β1 Monocerotis is a Be star with a V/R cycle of 12.5 years. We observed the star from CTIO (Chile) and with the IUE satellite and found that the star undergoes...
ζ2 Reticuli, its debris disk, and its lonely stellar companion ζ1 Ret. Different Tc trends for different spectra
Context. Several studies have reported a correlation between the chemical abundances of stars and condensation temperature (known as Tc trend). Very recently, a...
μ<SUB>⋆</SUB> masses: weak-lensing calibration of the Dark Energy Survey Year 1 redMaPPer clusters using stellar masses
We present the weak-lensing mass calibration of the stellar-mass-based μ ⋆ mass proxy for redMaPPer galaxy clusters in the Dark Energy Survey Year 1. For the...