ScienceDaily: Stars News |
- Surprising theorists, stars within middle-aged clusters are of similar age
- 'Perfect storm' quenching star formation around a supermassive black hole
- The hot blue stars of messier 47
| Surprising theorists, stars within middle-aged clusters are of similar age Posted: 17 Dec 2014 12:40 PM PST An examination of middle-aged star clusters reveals an unexpectedly narrow age range among their stars, suggesting that large groups of stars evolve differently than previously understood. |
| 'Perfect storm' quenching star formation around a supermassive black hole Posted: 17 Dec 2014 11:10 AM PST Astronomers have discovered that modest black holes can shut down star formation by producing turbulence. High-energy jets powered by supermassive black holes can blast away a galaxy's star-forming fuel, resulting in so-called "red and dead" galaxies: those brimming with ancient red stars yet containing little or no hydrogen gas to create new ones. |
| The hot blue stars of messier 47 Posted: 17 Dec 2014 04:43 AM PST Messier 47 is located approximately 1600 light-years from Earth, in the constellation of Puppis (the poop deck of the mythological ship Argo). It was first noticed some time before 1654 by Italian astronomer Giovanni Battista Hodierna and was later independently discovered by Charles Messier himself, who apparently had no knowledge of Hodierna's earlier observation. Although it is bright and easy to see, Messier 47 is one of the least densely populated open clusters. Only around 50 stars are visible in a region about 12 light-years across, compared to other similar objects which can contain thousands of stars. |
| You are subscribed to email updates from Stars News -- ScienceDaily To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
| Google Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States | |
No comments:
Post a Comment