All of this points to "stellar cannibalism" as the primary mechanism for blue straggler
That model leads to a definite prediction: If a blue straggler
arises from a group process, it should have a distant companion.
A team of astronomers used Hubble to study the blue straggler
star content in Messier 30, which formed 13 billion years ago and was discovered in 1764 by Charles Messier.
That means if a given blue straggler
formed with the rest of its star cluster, it should have died billions of years ago," Knigge said.
org, match astronomers' ideas about what would be left if a blue straggler
took gas from a now-defunct companion star.
To better understand cluster ageing, the team mapped the location of blue straggler
stars in 21 globular clusters, as seen in images from Hubble and the MPG/ESO 2.
The extent of the blue straggler
population detected provides two new constraints for models of the star-formation history of the bulge.
Christopher Frohmaier was nominated for his project Blue Straggler
Stars in the Globular Cluster M30 , which investigated the nature of these unique and enigmatic variety of stars that appear to defy the normal stellar ageing process.
The star either dipped into the Fountain of Youth by becoming a blue straggler
, or it was flung out of the Large Magellanic Cloud, a neighboring galaxy.
Indeed, the high stellar densities in their cores boost the formation of exotic populations like Blue Stragglers
(BSs) which seem to be present in essentially all GCs.
It contains a large variety of stars, from highly evolved red giants to white dwarfs and blue stragglers
WASHINGTON, May 25, 2011 /PRNewswire-USNewswire/ -- NASA's Hubble Space Telescope has found a rare class of oddball stars called blue stragglers
in the hub of our Milky Way, the first detected within our galaxy's bulge.