The Galactic Bulge, as the center of the Galaxy, is the closest laboratory for studying galaxy formation and evolution. However, its study faces significant...
The Average Size and Temperature Profile of Quasar Accretion Disks
We use multi-wavelength microlensing measurements of a sample of 10 image pairs from 8 lensed quasars to study the structure of their accretion disks. By using...
The awakening of BL Lacertae: observations by Fermi, Swift and the GASP-WEBT
Since the launch of the Fermi satellite, BL Lacertae has been moderately active at γ-rays and optical frequencies until 2011 May, when the source started a...
The B-type Binaries Characterisation Programme - II. VFTS 291: a stripped star from a recent mass transfer phase
Recent studies of massive binaries with putative black hole companions have uncovered a phase of binary evolution that has not been observed before, featuring a...
The B0.5 IVe CoRoT target HD 49330. II. Spectroscopic ground-based observations
Context: We present spectroscopic ground-based observations of the early Be star HD 49330 obtained simultaneously with the CoRoT-LRA1 run just before the burst...
The Backup Program of the Dark Energy Spectroscopic Instrument's Milky Way Survey
The Milky Way Backup Program (MWBP), a survey currently underway with the Dark Energy Spectroscopic Instrument (DESI) on the Nicholas U. Mayall 4 m Telescope...
The BaLROG project - I. Quantifying the influence of bars on the kinematics of nearby galaxies
We present the BaLROG (Bars in Low Redshift Optical Galaxies) sample of 16 morphologically distinct barred spirals to characterize observationally the influence...
The BaLROG project - II. Quantifying the influence of bars on the stellar populations of nearby galaxies
We continue the exploration of the BaLROG (Bars in Low Redshift Optical Galaxies) sample: 16 large mosaics of barred galaxies observed with the integral field...
We present surface photometry and stellar kinematics of NGC 4431, a barred dwarf galaxy in the Virgo Cluster undergoing a tidal interaction with one of its...