apr 272013
 
Bursts of Star Formation can Reduce Future Galaxy Growth

  Astronomers using the NASA/ESA Hubble Space Telescope have shown for the first time that bursts of star formation have a major impact far beyond the boundaries of their host galaxy. These energetic events can affect galactic gas at distances of up to twenty times greater than the visible size of the galaxy – altering [continue reading]

apr 182013
 
ALMA Pinpoints Early Galaxies at Record Speed

  A team of astronomers has used the new ALMA (Atacama Large Millimeter/submillimeter Array) telescope to pinpoint the locations of over 100 of the most fertile star-forming galaxies in the early Universe. ALMA is so powerful that, in just a few hours, it captured as many observations of these galaxies as have been made by [continue reading]

feb 192013
 
3-D Observations of the Outflow from an Active Galactic Nucleus

  A Japanese team of astronomers, led by Toru Misawa (Shinshu University), has used the Subaru Telescope to observe a distant gravitationally-lensed quasar (Note 1) and probed an active galactic nucleus in its central region. Looking through multiple sight lines, the astronomers obtained a 3-D view of the quasar and discovered complex small structures inside [continue reading]

jan 202013
 
No Galaxy Is An Island, Entire of Itself

  KIPAC scientists use X-ray observations show how galaxies shape their environment, and vice-versa   A major component of our understanding of galaxy evolution that has remained elusive is the influence of the local environment on the galaxy, especially when discussing galaxies in large clusters. Galaxy clusters, the largest gravitationally bound objects in the Universe, [continue reading]

okt 272012
 
Milky Way Caught Gobbling Up a Star Cluster

  Yale astronomers have caught the Milky Way having a snack. Using the Sloan Digital Sky Survey, researchers have discovered a stream, of stars believed to be the remnant of an ancient star cluster slowly being ingested by the Milky Way, Earth’s home galaxy. A map of stars in the outer region of the Milky Way [continue reading]

okt 202012
 
A Surprising Trend in Galaxy Evolution Uncovered (with Videos)

  A comprehensive study of hundreds of galaxies observed by the Keck telescopes in Hawaii and NASA’s Hubble Space Telescope has revealed an unexpected pattern of change that extends back 8 billion years, or more than half the age of the Universe. This plot shows the fractions of settled disk galaxies in four time spans, [continue reading]