Search: Finding an expert from an old star, a bright star around invasive rings –



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He is a volunteer who works with the Backyard Worlds project: NASA-led Planet 9, which finds the oldest and most cold white dwarf – a remnant of a star similar to Sun that has died – surrounded by dust and debris. Seals believe that this is a # 39; The first white dwarf known as a number of dust incidents.

The star, LSPM J0207 + 3331 or J0207 for a short time, requires researchers to review models of planetary systems and can help us to learn about the future of our solar system.

"The white dwarf is so old and that all processes need to feed into its rings working on a billion year scale," said John Debes, a researcher at the Telesgop Science Institute Spas in Baltimore. "Most of the science models created to explain white accidents ring only work well up to around 100 million years, so this star really challenges the ideas we have on how planetary systems change. "

A document explaining the results, led by Debes, was published in the 19 February issue The Astrophysical Journal Letters and is now available online.

J0207 is located around 145 years light in the Capricorn burial ground. White geese are very cool as they are at age, and the Debt team of J0207 about 3 billion years of age is based on a temperature of just over 10,500 degrees Fahrenheit (5,800 degrees Celsius). A strong infrared signal was built by the Explorer Wise-Field Infrared Survey (WISE) mission – designed by the whole spectrum in intestine light – suggested that there was a dust, making J0207 the oldest white dwarf and the cooler with still unknown dust. Previously, dust and ring dishes were not only used for white accidents about one third of J0207.

When a star like a Sun is running out of fuel, it's a & # 39; Going into a red giant, giving up at least half a & # 39; roof, and leaving a bright white white behind. Throughout the big star of the star, planets and asteroids near the star will be converted and burned. Planets and asteroids are further afield, but they will move out to expand their orbits. That is because the star is a huge loss, its impact is likely to be significantly reduced by the surrounding ones.

This situation describes the future of a solar system. There are now about 5 billion years now, Mercury, then Venus and maybe the Earth swallowed when it's; Sun is becoming a giant giant. Over hundreds of thousands to millions of years, the inner sun system will be scratched clean, and the remaining planets will move.

However, some white feathers – between 1 and 4 percent – will show deprivation of deprivation to & # 39; show that they are surrounded by a drop or dust. Scientists believe the dust may be able to; came from long asteroids and comets walked closer to the star with big interactions with planets released. As these small groups come to theirs, white tooth, the star's strong belief is uninterrupted in a process called a sea breach. The debris will create a circle of dust that slowly goes down on the surface of the star.

J0207 was discovered through Backyard Worlds: Planet 9, a project led by Marc Kuchner, co-author and astrophysicist at NASA's Space Flight Goddard Center in Greenbelt, Maryland, which calls for volunteering to settle through the WISE data for new search.

Melina Thévenot, a co-author and a science scientist in Germany working with her; project, initially thinking it was a bad measure; in the inner sign. She studied through the Gaia ESA (European Space Agency) archive for brown dwarfs, too big subjects for planets and too little to be stars, when she saw J0207. When she saw the store in the WISE neo-tree data, it was too bright and too far away to be a brown tune. Thévenot received its results to the Backyard Worlds team: Planet 9. Debes and Kuchner informed co-worker Adam Burgasser's colleague at the University of California, San Diego to receive ongoing comments by Keck II telegopic at the W. Keck Theater in Hawaii.

"That's a very inspiring part of the research," said Thévenot, one of over 150,000 citizen scientists on the Backyard Worlds project. "The researchers will move the telephony to look at the world you find. The things that I really enjoy, the connection between the research team Everyone is very kind, and they're always trying to get the best out of our searches. "

Keck's comments helped consolidate the J0207 scheduled buildings. Now, scientists are left to a puzzle as it suits their modules.

The tests comparing the number of asteroid zones of zones in white blue systems to sand gravity in an hour. Initially, there is a continuous range of material. The plants will splash asteroids to attack the white dwarf to be turned away, and keep a dusty disc. But over time, the asteroid belts will be applied, just like sand gravel in the hour. At the end, all the stuff in the # 39; The album crashed down on the surface of the white dwarf, and so J0207 should have white dancers older than dossiers or rings.

J0207 ring may even have many rings. Debes and his colleagues suggest that there may be two different divisions, one thin ring just at the place where the star's star is full; Breaking the asteroids and a circle closer to the white dwarf. Continuing to future campaigns such as the James Webb Spaniard Telesgop NASA helps shareholders to remove parts of the circles.

"We have built Backyard Worlds: Most Planet 9 for exploring brown dwarfs and new planets in the solar system," said Kuchner. "But jobs with citizen scientists are always amazed. They are completely – the project just marks their second birthday, and they have over 1,000 drinks Now look at the web site by duplicating the number of WISE data, we look at Continue to even more interesting footprints. "

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