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Scientists discover a Fossil Relic of early Milky Way harboring stars of hugely different ages

These similarities could make Terzan 5 a fossilised relic of galaxy formation, representing one of the earliest building blocks of the Milky Way

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Milky Way Galaxy. Image Source: Wikimedia Commons.

LONDON, Sept 08, 2016: An international team of researchers has found that a stellar system classified as a globular cluster for the 40-odd years since its detection actually has properties uncommon for a globular cluster that make it the ideal candidate for a living fossil from the early days of the Milky Way.

The cluster, known as Terzan 5 — 19,000 light-years from Earth- harbours stars of hugely different ages — an age-gap of roughly seven billion years and bridges the gap in understanding between our galaxy’s past and its present, the study said.

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“Such galactic fossils allow astronomers to reconstruct an important piece of the history of our Milky Way,” explained lead author of the study Francesco Ferraro from University of Bologna in Italy.

While the properties of Terzan 5 are uncommon for a globular cluster, they are very similar to the stellar population which can be found in the galactic bulge, the tightly packed central region of the Milky Way.

These similarities could make Terzan 5 a fossilised relic of galaxy formation, representing one of the earliest building blocks of the Milky Way.

“Terzan 5 could represent an intriguing link between the local and the distant Universe, a surviving witness of the Galactic bulge assembly process,” Ferraro said.

The team scoured data from the Advanced Camera for Surveys and the Wide Field Camera 3 on board Hubble, as well as from a suite of other ground-based telescopes.

They found compelling evidence that there are two distinct kinds of stars in Terzan 5 which not only differ in the elements they contain, but have an age-gap of roughly seven billion years.

The ages of the two populations indicate that the star formation process in Terzan 5 was not continuous, but was dominated by two distinct bursts of star formation.

“This requires the Terzan 5 ancestor to have large amounts of gas for a second generation of stars and to be quite massive. At least 100 million times the mass of the Sun,” co-author of the study Davide Massari from National Institute for Astrophysics (INAF) , Italy.

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Its unusual properties make Terzan 5 the ideal candidate for a living fossil from the early days of the Milky Way, said the study published in the Astrophysical Journal.

Somehow Terzan 5 has managed to survive being disrupted for billions of years, and has been preserved as a remnant of the distant past of the Milky Way.

The researchers believe that this discovery paves the way for a better and more complete understanding of galaxy assembly. (IANS)

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Honor Announces Launch of Honor 20 Series at London

The company launched the smartphone with the base 4GB RAM+64GB storage variant costing Rs 13,999 and the 6GB RAM+64GB storage model priced Rs 17,999

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Honor View 20 to launch in India for nearly Rs 40,000. Flickr

Chinese smartphone maker and Huawei’s sub-brand Honor on Monday announced to launch a new “Honor 20 series” globally at a London event on May 21.

There will be a couple of industry-first smartphones across price-ranges, and will hit the India market later, the company informed.

Honor 20 series is the successor to the Honor 10 series. The series may include Honor 20, Honor 20 Pro, Honor 20A, Honor 20C and Honor 20X, according to media reports.

Honor 20 will be a flagship phone with the Kirin 980 processor.

Reports say that the device will have a triple rear camera setup, including a massive 48MP primary sensor, 20MP secondary sensor and another 8MP sensor.

Honor, huawei
Honor.

“It will have a 32MP selfie camera, a 3,650mAh battery and run Android 9 Pie out of the box. There is no info on the Honor 20 Pro but we expect a bigger display, a bigger battery, and a different camera configuration,” reports GizmoChina.

In March, Honor launched a 3GB RAM+32GB internal storage variant of its recently launched “10 Lite” smartphone for Rs 11,999 in India.

Also Read- Tech Giant Google to Shut Down Jump VR Platform

Powered by the Kirin 710 chipset and 3,400mAh battery, the smartphone features a 13MP+2MP dual rear camera set-up and a 24MP Artificial Intelligence (AI) selfie camera packed in a dewdrop display.

Earlier in January, the company launched the smartphone with the base 4GB RAM+64GB storage variant costing Rs 13,999 and the 6GB RAM+64GB storage model priced Rs 17,999. (IANS)