Latest topics
» CBG Treats Inflammation and Oxidative Stress Says New Study
Today at 12:17 pm by PurpleSkyz

» NASA’s Voyager 2 Probe Enters Interstellar Space
Today at 12:13 pm by PurpleSkyz

» DOJ Wants To Keep Justification For Raiding Reported Clinton Foundation Whistleblower Secret
Today at 12:04 pm by PurpleSkyz

» A Remarkable Vaccine Research Event Has Occurred: What Is It?
Today at 11:57 am by PurpleSkyz

» The Office of POOFness - 12.10.18 - "Ring the Bells" & BUY MY LAPIS SO WE CAN KEEP ON SCAMMING YOU!
Today at 11:19 am by PurpleSkyz

» Suppressed Ancient Underwater Discoveries That Could Rewrite History
Today at 9:25 am by PurpleSkyz

» #Q Anon Drama Theater: The World is Watching plus more
Today at 8:45 am by PurpleSkyz

» New Evidence To Throw Hillary In Jail Could Set Her On The Run
Today at 8:41 am by PurpleSkyz

» Crazy sounds in the sky in Pennsylvania 12.02.2018
Today at 8:38 am by PurpleSkyz

» Huge Meteor Fireball Disintegrates Over Mexico
Today at 8:25 am by PurpleSkyz

» UFO News ~ Long Island UFO crosses the ocean and appears again over Lautoka, Fiji plus MORE
Today at 8:23 am by PurpleSkyz

» What science is confirming about the benefits of CBD oil
Today at 8:21 am by PurpleSkyz

» Towers of an ancient castle discovered in Antarctica
Today at 8:18 am by PurpleSkyz

» The Pagan Roots of Christmas
Today at 7:55 am by PurpleSkyz

» Violet (Viola ordorata)
Today at 1:41 am by Herb Lady

» Laws of Maybotics collapse in PM's theatre of the absurd
Yesterday at 8:34 pm by bs4ever

» JETS SCRAMBLED To Intercept "Unknown Craft" Over UK
Yesterday at 8:31 pm by bs4ever

» Blue Chicken Cult - BEHIND MAJESTIC INTERVIEW SERIES WITH DAVID WILCOCK Part 1,2,3,4 of 6
Yesterday at 7:15 pm by PurpleSkyz

» "THIS PLANET WILL BE THEIRS." David Jacobs on the Richard Dolan Show. Dec. 10, 2018.
Yesterday at 7:10 pm by PurpleSkyz

» #LIVE #QANON #LadyDragon + New Q @potus
Yesterday at 6:12 pm by LadyDragon

» Integrating Your Shadow and Light - How to Embrace Your WHOLE Self
Yesterday at 5:53 pm by PurpleSkyz

» Goblecki Tepe - You May Question Everything After Watching This...
Yesterday at 5:26 pm by PurpleSkyz


CLICK THE SUBSCRIBE BUTTON BELOW TO RECEIVE OUR DAILY NEWSLETTER

A 2ND EMAIL COMPLETES THE ACTIVATION PROCESS




CLICK THE PURPLE BUTTON TO VIEW OUR LATEST POSTS




You are not connected. Please login or register

Out Of Mind » SOLAR & PLANETARY ALERTS & INFO » ATMOSPHERIC CHANGES » ALMA Captures Star Birth in Orion Molecular Cloud

ALMA Captures Star Birth in Orion Molecular Cloud

Go down  Message [Page 1 of 1]

PurpleSkyz

avatar
Admin
ALMA Captures Star Birth in Orion Molecular Cloud


 Apr 8, 201


Around 500 years ago, two protostars had a perilously close encounter that blasted their stellar nursery apart. The Atacama Large Millimeter/submillimeter Array (ALMA) has now examined the widely scattered debris from this event, gaining new insights into the sometimes-fierce relationship among sibling stars.

Stellar explosions are often associated with supernovae, the powerful and catastrophic deaths of stars. But new ALMA observations of the Orion Nebula complex provide insights into explosions at the other end of the stellar life cycle — star birth. The colors in the ALMA data represent the relative Doppler shifting of the millimeter-wavelength light emitted by carbon monoxide gas. The blue color represents gas approaching at the highest speeds; the red color is from gas moving toward us more slowly. The background image includes optical and near-infrared imaging from both the Gemini South and ESO’s Very Large Telescope. The famous Trapezium Cluster of hot young stars appears towards the bottom of this image. Image credit: ALMA / ESO / NAOJ / NRAO / J. Bally / H. Drass et al.
Stars are born when a cloud of gas hundreds of times more massive than our Sun begins to collapse under its own gravity. In the densest regions, protostars ignite and begin to drift about randomly.
Over time, some stars begin to fall toward a common center of gravity, which is usually dominated by a particularly large protostar — and if the stars have a close encounter before they can escape their stellar nursery, violent interactions can occur.
About 100 000 years ago, several protostars started to form deep within the Orion Molecular Cloud 1 (OMC-1), a dense and active star factory about 1,350 light-years from Earth just behind the Orion Nebula.
Gravity began to pull them together with ever-increasing speed, until 500 years ago two of them finally clashed.
Astronomers are not sure whether they merely grazed each other or collided head-on, but either way it triggered a powerful eruption that launched other nearby protostars and hundreds of colossal streamers of gas and dust out into interstellar space at over 150 km per second. This cataclysmic interaction released as much energy as our Sun emits in 10 million years.



Fast forward 500 years, and a research team led by Prof. John Bally, an astronomer at the University of Colorado, has used ALMA to peer into the heart of OMC-1.
There the astronomers found the flung-out debris from the explosive birth of this clump of massive stars, looking like a cosmic version of fireworks with giant streamers rocketing off in all directions.
“What we see in this once calm stellar nursery is a cosmic version of a 4th of July fireworks display, with giant streamers rocketing off in all directions,” said Prof. Bally, lead author on a paper published in the Astrophysical Journal (arXiv.org preprint).
Such explosions are expected to be relatively short-lived, the remnants like those seen by ALMA lasting only centuries.
“Though fleeting, protostellar explosions may be relatively common. By destroying their parent cloud, as we see in OMC-1, such explosions may also help to regulate the pace of star formation in these giant molecular clouds,” Prof. Bally said.
He and his colleagues observed this feature previously with the Gemini-South telescope in Chile. These earlier images, taken in the near infrared, reveal the remarkable structure of the streamers, which extend nearly a light-year from end to end.
Hints of the explosive nature of this outflow were first uncovered in 2009 with the Submillimeter Array in Hawaii.
The new ALMA data, however, provide much greater clarity, unveiling important details about the distribution and high-velocity motion of the carbon monoxide gas inside the streamers.
This helps astronomers understand the underlying force of the blast and the impact such events could have on star formation across the galaxy.
“People most often associate stellar explosions with ancient stars, like a nova eruption on the surface of a decaying star or the even more spectacular supernova death of an extremely massive star. ALMA has given us new insights into explosions on the other end of the stellar life cycle, star birth,” Prof. Bally said.
_____
John Bally et al. 2017. The ALMA View of the OMC1 Explosion in Orion. ApJ 837, 60; doi: 10.3847/1538-4357/aa5c8b


Thanks to: http://www.sci-news.com



  

Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum