Daily non-political popular news in brief.
Hubble finds multiple stellar 'baby booms' in a globular cluster
05-02-2007 · EurekAlert!Analysis of Hubble observations of the massive globular cluster NGC 2808 provides evidence that it has three generations of stars that formed early in the cluster's life. This is a major upset for conventional theories as astronomers have long thought that globular star clusters had a single "baby boom" of stars early in their lives and then settled down into a long, quiet middle age.
Read more »
Keywords: hubble, multiple, stellar, baby, booms, globular, cluster, boom
« Previous | Next »
Similar news on "Hubble finds multiple stellar 'baby booms' in a globular cluster":
- Hubble yields direct proof of stellar sorting in a globular cluster
10-24-2006 · EurekAlert!
A seven-year study with the NASA/ESA Hubble Space Telescope has provided astronomers with the best observational evidence yet that globular clusters sort out stars according to their mass. Heavier stars slow down and sink to the cluster's core, while lighter stars pick up speed and move across the cluster to its periphery. This process, called "mass segregation," has long been suspected for globular star clusters, but has never before been directly seen in action.
Similar news · Read more »
- Hubble sees multiple star generations in a globular cluster
05-02-2007 · European Space Agency (ESA)
Hubble's observations of the massive globular cluster NGC 2808 provide evidence for three generations of stars that formed early in its life. This is a major upset for conventional theories that propose a single period of star birth.
Similar news · Read more »
- Baby booms and birth control in space
09-25-2007 · EurekAlert!
Stars in galaxies are a bit similar to people: during the first phase of their existence they grow rapidly, after which a stellar birth control occurs in most galaxies. Thanks to new observations from Dutch astronomer Mariska Kriek with the Gemini Telescope on Hawaii and the Very Large Telescope in Chile, it is now known that a part of the heavy galaxies already stopped forming stars when the universe was still a toddler, about three billion years old.
Similar news · Read more »
- Hubble shows 'baby' galaxy is not so young after all
10-16-2007 · EurekAlert!
The NASA/ESA Hubble Space Telescope has found out the true nature of a dwarf galaxy that astronomers had for a long time identified as one of the youngest galaxies in the Universe. Astronomers using the NASA/ESA Hubble Space Telescope have made observations of the galaxy I Zwicky 18 which seem to indicate that it is in fact much older and much farther away than previously thought.
Similar news · Read more »
- Star family seen through dusty fog
03-13-2007 · EurekAlert!
Images made with ESO's New Technology Telescope at La Silla by a team of German astronomers reveal a rich circular cluster of stars in the inner parts of our Galaxy. Located 30,000 light-years away, this previously unknown closely-packed group of about 100,000 stars is most likely a new globular cluster.
Similar news · Read more »
- The purple rose of Virgo
03-27-2007 · EurekAlert!
Until now NGC 5584 was just one galaxy among many others, located to the West of the Virgo Cluster. Known only as a number in galaxy surveys, its sheer beauty is now revealed in all its glory in a new VLT image. Since March 1, this purple cosmic rose also holds the brightest stellar explosion of the year, known as SN 2007af.
Similar news · Read more »
- Unusual supernovae may reveal intermediate-mass black holes in globular clusters
01-29-2008 · EurekAlert!
A strange and violent fate awaits a white dwarf star that wanders too close to a moderately massive black hole. According to a new study, the black hole's gravitational pull on the white dwarf would cause tidal forces sufficient to disrupt the stellar remnant and reignite nuclear burning in it, giving rise to a supernova explosion with an unusual appearance.
Similar news · Read more »
- Extreme star cluster in new Hubble images
10-02-2007 · European Space Agency (ESA)
The gigantic nebula NGC 3603 hosts one of the most prominent, massive, young clusters in the Milky Way. Hubble has been observing this prime location for star formation studies.
Similar news · Read more »
- Extreme star cluster bursts into life in new Hubble image
10-02-2007 · EurekAlert!
The NASA/ESA Hubble Space Telescope has captured a spectacular image of NGC 3603, a giant nebula hosting one of the most prominent massive young clusters in the Milky Way, thus supplying a prime template for star formation studies.
Similar news · Read more »
- Black hole boldly goes where no black hole has gone before
01-03-2007 · European Space Agency (ESA)
Astronomers have found a black hole where few thought they could ever exist, inside a globular star cluster. The finding has broad implications for the dynamics of stars clusters and also for the existence of a still-speculative new class of black holes called 'intermediate-mass' black holes.
Similar news · Read more »