Overfed Black Holes Shut Down Galactic Star-Making
This artistically modified
image of the local galaxy Arp 220, captured by the Hubble Space
Telescope, helps illustrate the Herschel results. The bright core of the
galaxy, paired with an overlaid artist's impression of jets emanating
from it, indicate that the central black hole's activity is
intensifying. As the active black hole continues to rev up, the rate of
star formation will, in turn, be tamped down in the galaxy. Astronomers
want to further study how star formation and black hole activity are
intertwined. Image credit: NASA/JPL-Caltech
› Full image and caption
|
May 09, 2012
PASADENA, Calif. -- The Herschel Space Observatory has shown galaxies
with the most powerful, active black holes at their cores produce fewer
stars than galaxies with less active black holes. The results are the
first to demonstrate black holes suppressed galactic star formation
when the universe was less than half its current age. Herschel is a European Space Agency-led mission with important NASA contributions.
MORE: http://www.jpl.nasa.gov/news/news.cfm?release=2012-129
gaw
Glenn A. Walsh, Project Director,
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