A third cluster of red supergiants in the vicinity of the massive cluster RSGC3

A third red supergiant rich cluster in the Scutum-Crux Arm

A time-dependent jet model for the emission from Sagittarius A*

A top-heavy stellar initial mass function in starbursts as an explanation for the high mass-to-light ratios of ultra compact dwarf galaxies

A Trigonometric Parallax of Sgr B2

A Two Micron All-Sky Survey View of the Sagittarius Dwarf Galaxy: VI. s-Process and Titanium Abundance Variations Along the Sagittarius Stream

A Two-dimensional Map of Color Excess in NGC 3603

A Two-Point Correlation Function For Galactic Halo Stars

A Unified Representation of Gas-Phase Element Depletions in the Interstellar Medium

A Universal Stellar Initial Mass Function? A Critical Look at Variations

A Universal Vertical Stellar Density Distribution Law for the Galaxy

A Variable Star Census in a Perseus Field

A Very Close Binary Black Hole in a Giant Elliptical Galaxy 3C 66B and its Black Hole Merger

A view of the Galactic halo using beryllium as a time scale

A VLA Archive Observation of the Youngest Known Galactic Supernova Remnant G1.9+0.3

A VLA Study of Ultracompact and Hypercompact H II Regions from 0.7 to 3.6 cm

A VLT VIMOS integral field spectroscopic study of perturbed blue compact galaxies: UM 420 and UM 462

A VLT VIMOS study of the anomalous BCD Mrk 996: mapping the ionised gas kinematics and abundances

A warning on the determination of the halo mass

A wide-field photometric survey for extratidal tails around five metal-poor globular clusters in the Galactic halo