The stochastic nature of stellar population modelling
Since the early 1970s, stellar population modelling has been one of the basic tools for understanding the physics of unresolved systems from observation of...
The strange case of Na I in the atmosphere of HD 209458 b. Reconciling low- and high-resolution spectroscopic observations
Aims: We aim to investigate the origin of the discrepant results reported in the literature about the presence of Na I in the atmosphere of HD 209458 b, based...
The striking near-infrared morphology of the inner region in M100
New optical and near-infrared (NIR) K-band images of the inner 3 kpc region of the nearby Virgo spiral M100 (NGC 4321) display remarkable morphological changes...
The Strong Gravitationally Lensed Herschel Galaxy HLock01: Optical Spectroscopy Reveals a Close Galaxy Merger with Evidence of Inflowing Gas
The submillimeter galaxy (SMG) HERMES J105751.1+573027 (hereafter HLock01) at z = 2.9574 ± 0.0001 is one of the brightest gravitationally lensed sources...
The structural properties of classical bulges and discs from z ̃ 2
We study the rest-frame optical mass-size relation of bulges and discs from z ̃ 2 to z ̃ 0 for a complete sample of massive galaxies in the CANDELS fields using...
The structure and kinematics of the HH 444 photoionized jet in the sigma Orionis region
HH 444 is a stellar jet which is immersed in the H II region photoionized by sigma Orionis. Spatially resolved, high spectral resolution observations of the Hα...
The structure and kinematics of the unusual bipolar outflow NGC 7026.
High and low resolution spectroscopy, together with narrow and broad band imaging have been acquired for the unusual outflow source NGC 7026. We find evidence...
The Structure and Star Formation History of NGC 5461
We compute photoionization models for the giant extragalactic H II region NGC 5461 and compare their predictions to several observational constraints. Since we...
The models for galaxy clustering in which galaxies are identified with peaks on the mass density field smoothed on an appropriate scale are plagued by some...