ibusinesslines.com
ibusinesslines.com October 17, 2018


Star formation underway 250 million years after Big Bang

17 May 2018, 10:46 | Justin Tyler

Of 13.28 billion years ago in the galaxy MACS1149-JD1 was there and killed a whole generation of stars

Астрономы обнаружили самые старые объекты во Вселенной

Pinpointing this period of star birth - which gave rise to oxygen, carbon and other elements in the universe - is a holy grail for astronomers chasing down the beginning of everything.

What made this discovery so incredible is that the signal is believed to have been emitted 13.3bn years ago making it not only the most distant oxygen ever detected, but shows stars were forming as little as 250m years after the Big Bang.

In order to discover when did the star formation occurred, scientists reconstructed the earlier history of MACS1149-JD1 using infrared data taken with the NASA/ESA Hubble Space Telescope and the NASA Spitzer Space Telescope.

"It turns out that this galaxy after only 500 million years after its origin was filled with Mature stars".

The universe's first stars may have formed a mere 250 million years after the big bang-hundreds of millions of years earlier than thought, according to a new study. It's this light signal that ALMA has picked up some 13 billion years later, although in that time the expansion of the universe has stretched the light into the millimeter wavelength.


"The mature stellar population in MACS1149-JD1 implies that stars were forming back to even earlier times, beyond what we can now see with our telescopes", says Nicolas Laporte, an astronomer on the research team. "We have for the first time observed the very early stage of star formation in the universe". "This detection pushes back the frontiers of the observable Universe", said Dr. Takuya Hashimoto, an astronomer at both Osaka Sangyo University and the National Astronomical Observatory of Japan. The VLT helped in studying the "spectral lines from hydrogen" and the Alma helped in studying the "spectral lines from oxygen".

A group of researchers has reportedly detected oxygen in a far-off galaxy, which is near about thirteen billion light-years away from our planet.

MACS1149-JD1 is the most distant known galaxy with a precise distance measurement, said the researchers.

The maturity of the stars seen in MACS1149-JD1 raises the question of when the very first galaxies emerged from total darkness, an epoch astronomers call 'cosmic dawn'. That gives us an indication of how much earlier in the history of the Universe - which we can't now probe with our telescopes - that this object actually formed.

"With MACS1149-JD1, we have managed to probe history beyond the limits of when we can actually detect galaxies with current facilities", said Richard Ellis, another UCL co-author of the study. There is renewed optimism we are getting closer and closer to witnessing directly the birth of starlight. "Since we are all made of processed stellar material, this is really finding our own origins".



Other News

Trending Now

Mac Miller Arrested For Hit-And-Run While Drunk Driving
Law enforcement sources TMZ that Miller was driving in California's San Fernando Valley at 1 a.m. Earlier this morning, TMZ reports that Miller was photographed leaving a prison in Van Nuys.

YouTube Will Now Publish Music Credits On Videos
It has been a longstanding issue that platforms like YouTube and Spotify have had to deal with. It also gives links to the artist's official channel and the song's official music video .

Yeddyurappa will be sworn-in as CM tomorrow, confirms Governor
Shankar from Ranebennur has offered his support to BJP, boosting their confidence to form the government. It is quite natural that both these "secular" parties have chose to keep the BJP out of power, he said.

Italy's Populists Drop $300 Billion Debt Writeoff in Almost-Final Policy Plan
They also condemned the leak of the draft deal by HuffPost Italia and said the proposals, dated 09:30 on 14 May, were out of date. Di Maio's 5-Star Movement is Parliament's single biggest party, after winning some 32 percent in the March 4 election.

Eruption Explosion, Ash Alert
Officials have said they didn't expect the explosion to be deadly as long as people remained out of park. USGS scientists will not monitor the plume from a summit observatory because of fears of falling ash.

Backstreet Boys Talk Heartbreak & First New Music in 5 Years
They announced it a few days ago, but nothing can prepare you for the return of the Backstreet Boys . The Backstreet Boys' last studio album, " In a World Like This ", was released in 2013.

Stock markets rise on Karnataka results
Sector-wise, heavy selling pressure was witnessed in automobile, healthcare and capital goods stocks. Meanwhile, the Indian Rupee rose by five paise to trade at Rs.67.74 against one USA dollar.