dearJulius.com Write For Us

New research undermines star formation theories

SHARE:

The combination of variables dictating star formation and evolution are more complex and less constant than researchers thought. Photo by NASA/UPI | License Photo

By Brooks Hays, UPI

Astronomers thought they had discovered a reliable and consistent relationship between the size of stars and the mass of star-forming clouds of dust and gas, but new research has undermined the assumptions of several star formation theories.

Surveys of the Milky Way have revealed a strong correlation between the size and mass of star-forming cores and the size and mass of the mature stars. Astronomers have also identified a constant distribution of stellar masses across the Milky Way -- a bell curve, with extremely small and extremely large stars as the rarest, bookending the meat of the curve, and solar-mass stars, stars roughly the size and mass of the sun, as the most common.

Scientists weren't sure, however, if these constants were the same in other star-forming regions. New research suggests they're not.

When researchers used the ALMA telescope to survey a distant star-forming region named W43-MM1, situated 18,000 light-years away, they discovered a stellar mass distribution pattern very different from the Milky Way's.

In the Milky Way, stars with masses slightly smaller than the sun's are very common. In W43-MM1, they're rare. W43-MM1 also hosts an abundance of extremely massive stars, stars that are much less common in the Milky Way.

The new findings -- published this week in the journal Nature Astronomy -- suggest many of constants astronomers believed to govern stellar formation and evolution are not universal.

"These findings were a complete surprise and call into question the intricate relationship between the masses of star-forming cores and the masses of the stars themselves, which has long been assumed," Kenneth Marsh, an astronomer at Cardiff University in Wales, said in a news release.

"As a consequence, the community may need to revisit its calculations regarding the complex processes that dictate how stars are born," Marsh said. "The evolution of a core into a star involves many different physical interactions, and the results of studies such as this should help us better understand how it all happens."

COMMENTS



Note: If you think this story need more information or correction, feel free to comment below your opinion and reaction.
Like & Follow to Stay Updated ...

Name

AI,3,Amazon,1,Apple,5,Emoji,1,Facebook,17,Games,35,Google,7,Instagram,6,Science,205,Security,4,Social Media,24,Tech,242,Technology,1151,Tesla,5,Twitter,4,
ltr
item
Technology - U.S. Daily News: New research undermines star formation theories
New research undermines star formation theories
https://3.bp.blogspot.com/-ckPhwCdhhsk/WuliZ5s3p4I/AAAAAAAAk64/knmXiNJ9Trgf7aw0F4k8fdDYo1i9KUSEACLcBGAs/s1600/2.jpg
https://3.bp.blogspot.com/-ckPhwCdhhsk/WuliZ5s3p4I/AAAAAAAAk64/knmXiNJ9Trgf7aw0F4k8fdDYo1i9KUSEACLcBGAs/s72-c/2.jpg
Technology - U.S. Daily News
https://tech.dailynews.us.com/2018/05/new-research-undermines-star-formation.html
https://tech.dailynews.us.com/
https://tech.dailynews.us.com/
https://tech.dailynews.us.com/2018/05/new-research-undermines-star-formation.html
true
4191228214535516123
UTF-8
Loaded All Posts Not found any posts VIEW ALL Read More Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share. STEP 2: Click the link you shared to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy