Science

Researchers Discover A Surprising Triple Star System

Researchers Discover A Surprising Triple Star System”

Fortunately, although this illusion was only recently discovered, GW Orionis has been under surveillance since 2008, and was the third star in the system. The innermost ring looks nearly circular because it is viewed face-on, but the two outer rings are viewed at an angle and appear oval.

Using the European Southern Observatory's Very Large Telescope (ESO's VLT) and the Atacama Large Millimeter/submillimeter Array (ALMA, ) a team of astronomers found the first direct evidence that stars can tear apart the planet-forming, or circumstellar, disc that surrounds them.

That outer ring is the largest we've ever seen in a protoplanetary system; for comparison, Pluto's average distance from the Sun is 39.5 astronomical units.

A view from a potential planet around this system will give the observer a stunning view of a tilted, multiple stellar constellation - similar to Star Wars' Tatooine, reports the University of Exter team.

The Sun is a single star, while many stars were formed in sets of two or more.

The three stars do not orbit in the same plane. If it is found, it will be the first ever planet to be observed in a triple star system and, it would likely have a rather unusual orbit.

To reach these conclusions, a team from the Universities of Exeter and Leicester observed stellar system GW Orionis for over 11 years and mapped the orbit of the stars with unprecedented precision. The third star, GW Orionis C, orbits its two siblings at a distance of roughly 8 AU. The radii of the rings are 46, 188, and 336 au. This means that all of the planets orbit around the sun in the same plane. Our images show an eccentric ring that is misaligned with the orbital planes and the outer disk.

The team estimated that the dust masses of the rings are 75, 170, and 245 Earth masses. "We think that the presence of a planet between these rings is needed to explain why the disk was torn apart", said astronomer Nienke van der Marel of the University of Victoria.

The ALMA image of GW Ori shows another interesting feature.

More news: Speeds up to 100 Mbps with the Starlink project, SpaceX

A separate team of researchers from an earlier study published in The Astrophysical Journal in May had suggested another possible reason for the warp. "But the odd warp in the disk is confirmed by a twisted pattern that ALMA measured in the gas of the disc".

The team performed a computer simulation to investigate how the gravity of the central triple star affects the rings. The simulation revealed that the stars had torn apart their disc themselves due to their conflicting gravitational pull, with each one pulling on the disc in a different direction.

"This planet has likely carved a dust gap and broken the disk at the location of the current inner and outer rings".

When Luke Skywalker emerges from his home at dusk on the planet Tatooine in "Star Wars: Episode IV - A New Hope", he watches twin suns setting in the sky. "I believe that research on the diversity of exoplanets will continue to make progress in the future".

An worldwide team of experts, led by the astronomers at the University of Exeter, identified GW Orionis where planet formation might take place in inclined dust and gas rings within a warped circumstellar disc around multiple stars based on observations with the European Southern Observatory's Very Large Telescope (VLT), Georgia State University's Center for High-Angular Resolution Astronomy telescope array (CHARA), and the Atacama Large Millimeter/submillimeter Array (ALMA).

By combining the techniques of interferometry and polarimetry, they identified the misaligned inner ring and imaged the shadow that it casts on the rest of the disc.

That could be the view from a potential planet orbiting in the GW Orionis system, according to new research. It consists of three rings, wrapped around three stars - and all three rings have different trends, which are incorrectly placed internally from the other two.

"We're really excited that our new MIRC-X imager has provided the sharpest view yet of this intriguing system and revealed the gravitational dance of the three stars in the system".

A cloud of dust and gas swirling around a galaxy system 1,300 light-years away is like a planetary disk we haven't seen yet. We present observations of the triple star system GW Orionis, finding evidence for disk tearing.



Like this

loading...
loading...

Latest


04 September 2020
Suspect In Fatal Portland Shooting Was Killed By Officers During Arrest
Pierce County Sheriff's Department and Lakewood Police Department report that four officers fired shots in the exchange. Get breaking news, investigations, analysis and more signature journalism from the Los Angeles Times in your inbox.

04 September 2020
Krug, GWU professor, lied about being Black
However, screenwriter Hari Ziyad said her admission came "because she had been found out". "I'm Jessa Bombalera. She taught classes on African history and received a Ph.D. from the University of Wisconsin-Madison in 2012.

04 September 2020
Solskjaer in personal meeting with Thiago Alcantara over Man Utd move
The Spaniard completed an average of 82.63 passes per 90 minutes in the Bundesliga last season, with an accuracy of 90.48%. And Redknapp believes Thiago will add some much-needed "finesse" to the Reds' midfield.

04 September 2020
U.S. trade deficit surges in July to highest in 12 years
Rubeela Farooqi, chief US economist at High Frequency Economics, says she expects the uncertainty to continue for a while yet. For July, the deficit with China in goods totalled US$31.6 billion, an 11.5 per cent increase from the June imbalance.

04 September 2020
Australia breaks 29-year growth streak and falls into recession
The Victorian restrictions will weigh heavily on growth figures for the September quarter, which won't be released until December. The government did step up with more than A$300billion of stimulus, though the gloomy data underlines the need for more stimulus.

04 September 2020
Alexis Sanchez Twists The Knife Into Manchester United Following His Disastrous Move
And you could see it on the pitch, but because they had to blame someone they would always blame me. That's how I am and I try to do my best and football is what I love.

04 September 2020
Meghan Markle and Prince Harry sign huge production deal with Netflix
And now we can start wondering if they'll end up guest-starring as themselves on The Crown (probably not). Their fee has not been made public, but similar multi-year deals are worth many millions of dollars.

04 September 2020
U.S. federal budget deficit forecast to hit $3.3tn this year
Although the debt and deficit are soaring, some analysts think continued spending to fight the virus is necessary - up to a point. The coronavirus has infected more than 6 million people in the United States and claimed more than 180,000 lives here.

04 September 2020
World Health Organization roots for equitable access to COVID-19 vaccine in Africa
He said it's just in case one of the vaccines now being tested shows fast, clear evidence it is protecting people. Robert Redfield, the CDC provided some major updates about a potential vaccine.

04 September 2020
Lebanese army finds more explosive chemicals outside Beirut port after huge blast
Also among those arrested are three Syrian workers who carried out welding work on the warehouse on the day of the blast. A four ton stash of ammonium nitrate was found inside a shipping container, and was swiftly removed by army engineers.