Embry-Riddle approach determine ages of stars more accurately

Must Read

NASA New Telescope SPHEREx Will Explore Origins of Universe

US space agency NASA has unveiled a new space telescope SPHEREx that would begin a two-year mission in 2023...

According to Science, People who drink Tea are more creative and focused

Good news has come out for all the Tea lovers in the world. According to a recent scientific study...

Samsung Galaxy Fold, the foldable smartphone unfolds like a book – Watch Tailer Video

Celebrating the first decade of its Galaxy 'S' series, Samsung has unveiled the first-of-its-kind foldable smartphone --Samsung Galaxy Fold...
Knowledge Stall Deskhttps://knowledgestall.com
At Knowledge Stall, we are going to quench the thirst of knowledge. We are going to try our level best in providing you the latest trending news about lifestyle, technology and other informative sectors

Embry-Riddle approach determine ages of stars more accuratelyA new technique for understanding the star-forming history of the Milky Way is unprecedented detail has now made it possible to determine the ages of stars at least two times more precisely.

The study was presented by the Embry-Riddle Aeronautical University at the January 10 meeting of the American Astronomical Society (AAS) meeting.

- Advertisement -

According to Embry-Riddle Physics and Astronomy Professor Dr. Ted von Hippel, current star-dating techniques, based on assessments of stars in the prime or main sequence of their lives that have begun to die after exhausting their hydrogen, offer a 20-percent, or at best a 10-percent margin of error. Embry-Riddle’s approach, leveraging burnt-out remnants called white dwarf stars, reduces the margin of error to 5 percent or even 3 percent, he added.

Dr. Ted von Hippel went on to say that for the method to work, his team must measure the star’s surface temperature, whether it has a hydrogen or helium atmosphere, and it’s mass.

Dr. von Hippel said, “The star’s mass matters because objects with greater mass have more energy and take longer to cool,” adding, “Surface temperature, like spent coals in a campfire that’s gone out, offer clues to how long ago the fire died. Finally, knowing whether there is hydrogen or helium at the surface is important because helium radiates heat away from the star more readily than hydrogen.”

Now, astronomers have a new method to determine white dwarf masses and takes advantage of data captured by the European Space Agency’s Gaia satellite.

Von Hippel, with recent Embry-Riddle graduate Adam Moss, current students Isabelle Kloc, Jimmy Sargent and Natalie Moticksa, and instructor Elliot Robinson, used highly precise Gaia measurements of the distance of stars.

The Gaia measurements, based on the geometry of two different lines of site or “parallaxes” to objects, helped Embry-Riddle researchers determine the radius of stars based on their brightness.

They could then use existing information on the star’s mass-to-radius ratio – a calculation driven by the physical behaviour of electrons – to fill in the last ingredient for determining the age of the star, its mass.

By figuring out the abundance of different elements within the star, or its metallicity, researchers can now further refine the age of the object, Moss and Kloc reported in two separate AAS poster presentations.

 

Source: ANI

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Latest News

Jio bags triple honours at Golden Globe Tigers Award 2019

Jio, the digital services brand conceived with a mission to connect everyone and everything, has won three top awards...

Facebook to make London hub for WhatsApp Payments

Before it launches WhatsApp Pay in India, Facebook has selected London as base for the global roll-out of its digital payments service on the...

AI enabled feature for MS Word will suggest rewrites for complex sentences

In an attempt to augment employee skills, Microsoft has announced a new Artificial Intelligence, AI-enabled feature for Word that would suggest rewrites for complex...

Processed foods sold by MNC are raising undernutrition and obesity

Food experts feel that the processed foods which are being sold by multinational companies are raising undernutrition and obesity in the country. According to...

TCS will modernize Indian Post and its services

India Post has partnered with IT services firm Tata Consultancy Services (TCS) to become a multi-service digital hub, modernize the delivery of mail and...

Video games affect girls more than boys: A Study claims

Dear parents, please take note. Video games affect girls in the 6-12 age group, who are at a heightened risk of developing less social...

Patients CT and MRI scan results can be easily changed by hackers

Patients' CT and MRI scan results can be easily changed by hackers, thereby deceiving radiologists and Artificial Intelligence (AI) algorithms that diagnose malignant tumours,...

Tesla Robotaxis: Elon Musk says robotaxis will be ready by 2020

Tesla CEO Elon Musk has said that the electric car maker is ready to fly autonomous robotaxis from 2020.Making a series of bold predictions...

Rising ocean temperatures: Oceans are warming up faster

Rising ocean temperatures Oceans are warming up faster.  A new study now finds that our oceans are much warmer than previously thought. Driven by climate...

More Articles Like This