Astronomers Reckon They've Found A "Frozen Super-Earth"

15 November, 2018, 23:13 | Author: Darnell Taylor
  • An artist's rendition of Barnard's star b with the star in the background.                  ESO  M. Kornmesser

"There's not so many stars in our immediate neighborhood".

Less than six light-years away from our Sun, the potential planet orbits Barnard's Star, a well-studied low-mass red dwarf star in the Ophiuchus constellation.

The newly published study lays out the basics of the exoplanet.

In the coming decade, the next generation of astronomical observatory will revolutionise our ability to peer into the space close to the nearest stars, looking for the dim glow of their planets, reflecting the light of their host stars.

Despite being relatively close to its parent star, the planet receives less than 2 percent of the energy Earth gets from the sun.

"Or it may be what we call a mini-Neptune, like a scaled-down version of the gas giants of our solar system". The team of researchers combined 20 years worth of data from seven separate instruments to make their conclusion and discover the planet.

Since that time, however, planet hunter after planet hunter have pointed their telescopes to the star for signs of anything out of the ordinary.

Given its proximity to our solar system and its long orbit, future missions and telescopes will be able to provide new insights about Barnard's star b.

A new "Super Earth" planet has been discovered orbiting a nearby star system so how quickly can humans reach it and would we want to?

Google Internet Traffic Routed Through China, Russia, Nigeria During Brief Outage 11/14/2018
Main One peers with Google, in that they agree to exchange traffic with each other through a peering point. The disruption in Google services was limited to almost an hour.


Opinions & Transfer NewsManchester United made favourites to land Marko Arnautovic
As the Express report , Maurizio Sarri's side are the second favourites to sign Arnautovic, narrowly behind Manchester United . West Ham fans will dread to think where they would be without Arnautovic's influence.


Study finds decreased social media use improves mood and wellbeing
But the restrictions had no impact on feelings of social support, self-esteem or one's overall sense of well-being. Seventy-eight percent of them use Snapchat, 71 percent use Instagram and 45 percent use Twitter, Pew says.


"It´s important because it´s really our nextdoor neighbour and we like to meet our neighbours in general", Ignasi Ribas, from the Institute of Space Studies of Catalonia and Spain´s Institute of Space Sciences, told AFP.

Patterns in those spectral variations can point to the gravitational wobbles induced by a planet orbiting an alien star.

In addition, the new find provides further evidence that planets are almost ubiquitous around red dwarf stars, said Ignasi Ribas, an astronomer and director of the Institute of Space Studies of Catalonia in Spain, who led the work.

Barnard's Star has always been "the great white whale" of exoplanet hunting, said Carnegie astronomer Paul Butler, a co-author on the Nature paper.

This discovery showcases the power of the radial velocity technique for detecting small planets. "This is going to be one of the best candidates", says astronomer Nikku Madhusudhan of the University of Cambridge in the United Kingdom, who was not part of the discovery team. One thing astronomers are confident about, though, is that this new planet is not habitable.

"Much of the universe is still a complete mystery", Ribas said. "[The candidate] is very strong in terms of the statistical significance". One of the main architects of exoplanet research, the astronomer Peter van de Kamp, proposed more than 50 years ago that this star could host a planet. At the time, the case for a planetary object (instead of some kind of activity intrinsic to the star) wasn't strong enough to stand on its own.

Attempting to confirm the hypothesis, astronomers have regularly observed the Barnard´s star with high precision spectrometers such as CARMENES, at Calar Alto Observatory.

Graphic representation of the relative distances to the nearest stars from the sun. Aside from the Alpha Centauri system, it is the closest star to the Solar system. As a result, Barnard's Star b lies beyond what is known as the ice line, so far from the star that water would freeze harder than rock.

From these measurements they are able to estimate a planet's mass and orbital period. Even so, the size of the newly found planet is just on the edge of what current instruments can detect. In the 1960s, the Dutch astronomer Peter van de Kamp, working in the U.S., published his evidence for a planetary companion, based on perturbations in the motion of the star.

Recommended:



Popular

Silva pushes Sri Lanka to lead over England in 2nd test
Roshen Silva was the top scorer for Sri Lanka with a gritty 85, while there were vital contributions from Dimuth Karunaratne . England faced just one over before stumps on day two and promoted Leach to open the innings.

Rooney ready to enjoy England farewell after pressure of 'Golden Generation'
Stuart Pearce , who played 78 times for England and was interim England coach in 2012, said it "cheapened" an global cap. Indeed Rooney was full of praise for Southgate's impact as England manager, describing him as "fearless".

FDA Plans Crackdown on Flavored E-Cigarettes
Food and Drug Administration wants to ban traditional menthol cigarettes as part of the campaign against tobacco products . The proportion is about 20 percent for Altria Group Inc ., which sells Marlboro in that market, according to the firm.

Giants beat 49ers 27-23
The pass completed a nine-play, 75-yard drive, after Manning took over on his own 25-yard line with 2:46 to play, trailing 23-20. Those sacks have amounted to 231 lost yards, nearly half as many as running back Saquon Barkley's total rushing yards (519).

LeBron James 'Almost Cracked' After Lakers' Poor Start, Admits It Was Needed
He had 26 points and his season high of 12 rebounds in a 128-119 loss at Portland in the season opener on October 18. Afterward, James praised Chamberlain as "One of the most dominant forces we ever had in our game, along with Shaq.

Chelsea could be hit with two-year transfer ban by Federation Internationale de Football Association
It is unclear whether or not the cases against Chelsea or the other four Premier League clubs are close to completion. The only exceptions relate to transfers within the EU or European Economic Area.

Britain says Saudi-led coalition to allow Yemen evacuations
Four employees in Hodeida port who requested anonymity told AFP that a rebel commander had been killed in the attack on Monday. Hodeida Port is under a near-total blockade by Saudi Arabia and its allies, who accuse Iran of smuggling arms to the Houthis.

Blake Snell, Jacob deGrom Win Cy Young Awards
John Maffei of the San Diego Union-Tribune was the only writer to place Scherzer ahead of deGrom on their ballot. DeGrom nearly won the award unanimously, receiving 29 of 30 first-place votes with 207 total points.

Leaked pictures from Deepika, Ranveers wedding
Moreover, according to reports in the Indian media, the couple will release the pictures at 6pm today. Ranveer Singh and Deepika Padukone's nuptials are being attended by close friends and family.

New Zealand to host Women's Rugby World Cup in 2021
He said: "This is a significant and exciting day for the Challenge Cup, and the game's relationship with Wembley Stadium". The country was up against Australia in a vote conducted by the World Rugby Council in Dublin on Wednesday.