More hypervelocity stars are jetting out of the galaxy
Palladino et al. find 13 new hypervelocity star candidates in the galaxy and find they probably do not originate from the center of the galaxy.
The (not so) Sordid History of the Small Magellanic Cloud
The authors of today’s paper find out just what kind of star formation history lies in the Milky Way’s next meal: The Small Magellanic Cloud. After all, they say you are what you eat.
Unveiling the friend of a pulsar
What kind of star is orbiting around a millisecond pulsar and where did it come from?
Tracking the Chemical Evolution of Galaxies Over the Last 11 Billion Years
In this article, the authors measure the stellar mass-metallicity relation for star forming galaxies ranging to z~2.3. They find that mass-metallicity relationship for these galaxies evolves with time and also that it flattens at late times.
Evidence for two distinct populations of Type Ia Supernovae
Type Ia Supernovae are extensively used in astronomy research, but the progenitors of these massive explosions are still not well understood. This paper discusses new evidence that there are two distinct populations of type Ia supernovae, and that they originate from different stellar populations.
Using a Lens to Look Back in Time
Using massive gravitational lenses can help us study the evolution of galaxies over unprecedented time scales.