Old stars gleaned neighbors’ gas, Hubble data show

Snatching matter helps blue stragglers stay hot and look young

By Ashley Yeager, 16:01 PM February 6, 2014

Stealing keeps some stars looking young. The thieves, called blue stragglers, swipe material from a neighbor, leaving behind a dead stellar companion as a calling card, data from the Hubble Space Telescope show.

Natalie Gosnell, an astronomer at the University of Wisconsin–Madison, and her colleagues discovered three blue stragglers that share orbits with white dwarfs, the remnants of dead stars. The findings, posted January 29 on arXiv.org, match astronomers’ ideas about what would be left if...

Source URL: https://www.sciencenews.org/article/old-stars-gleaned-neighbors’-gas-hubble-data-show?mode=archive&context=188098