Technology NASA's Hubble On A Hunt For Ancient Galaxy

11:35  13 march  2018
11:35  13 march  2018 Source:   ibtimes.com

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Astronomers using NASA ’ s Hubble Space Telescope are investigating an ancient galaxy – called NGC 1277 – that’s in our cosmic backyard, 240 million light-years from Earth.

Astronomers have put NASA ' s Hubble Space Telescope on an Indiana Jones-type quest to uncover an ancient "relic galaxy " in our own cosmic backyard. The very rare and odd assemblage of stars has remained essentially unchanged for the past 10 billion years.

a star in the night sky © Provided by IBT US

NASA's Hubble telescope has spotted an ancient galaxy packed with millions of stars, right in our cosmic backyard. Astronomers tasked the Hubble telescope with this Indiana Jones-type quest to hunt for a “relic galaxy” close to our own, so they could better understand how galaxies evolved billions of years ago.

The ancient galaxy, called NGC 1277, came into existence with a bang long ago, giving birth to new stars around 1,000 times faster than observed in our own galaxy. However, the galaxy eventually went dormant after failing to gather enough material to grow in size and is now in a state of “arrested development.” This galaxy houses numerous oddly assembled and rare stars, which according to NASA, have “essentially unchanged for the past 10 billion years.”

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NASA Hubble Space Telescope finds ancient galaxy on our doorstep. NASA ’ s Hubble Space Telescope discovery of ancient cluster of stars hiding in plain sight has raised questions about the age of our universe.

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Although Hubble previously spotted such galaxies in the early universe, this is the first time it has found such a stellar island nearby.

“We can explore such original galaxies in full detail and probe the conditions of the early universe,” Ignacio Trujillo of the Instituto de Astrofisica de Canarias at Spain's University of La Laguna, said in a statement.

Scientists estimated around one in 1,000 massive galaxies is an oddball galaxy like the NGC 1277. The galaxy's current state can be determined by the globular cluster of stars surrounding it. Giant galaxies like the NGC 1277 generally contain both metal-rich (red in appearance) and metal-poor (blue in appearance) globular clusters. However, researchers discovered the NGC 1277 has nearly no blue globular clusters.

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The universe suddenly looks a lot more crowded than previously though thanks to a deep sky census by Hubble and major observatories.

Credits: NASA , ESA/ Hubble and the Hubble Heritage Team. Including 12 newly released Hubble images! In order to create a mosaic image that depicts almost half of Andromeda, Hubble has taken nearly 7,400 exposures of the galaxy .

"I've been studying globular clusters in galaxies for a long time, and this is the first time I've ever seen this," said Michael Beasley, also of the Instituto de Astrofisica de Canarias.

“The red clusters are the strongest evidence that the galaxy went out of the star-making business long ago. However, the lack of blue clusters suggests that NGC 1277 never grew further by gobbling up surrounding galaxies,” NASA said in a statement. “By contrast, our Milky Way contains approximately 180 blue and red globular clusters. This is due partly to the fact that our Milky Way continues cannibalizing galaxies that swing too close by in our Local Group of a few dozen small galaxies.”

The NCG 1277 galaxy is composed exclusively of aging stars that were born 10 billion years ago. © Photo: NASA, ESA, M. Beasley (Instituto de Astrofísica de Canarias), and P. Kehusmaa The NCG 1277 galaxy is composed exclusively of aging stars that were born 10 billion years ago.

The ancient galaxy resides near the heart of the Perseus cluster, which is home to over 1,000 galaxies, and is located 240 million light years away. However, the NGC 1277 is hurtling across the cluster at a speed of 2 million miles per hour – making it nearly impossible to merge with other galaxies or even gather materials to boost its star formation.

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The picture captured by Nasa ' s Hubble telescope was magnified by a natural phenomenon known as A cluster of galaxies between the telescope and the ancient galaxy magnified the image. Scientists discover ancient lizard that hunted the shallow waters around Italy 75 million years ago.

" Hubble tells you which galaxies to look at and how many stars are being born in those systems. The first galaxy cluster to be studied is known as Abell 2744 or Pandora' s Cluster. This article, NASA uses telescopes to hunt ancient galaxies , was originally published at Computerworld.com.

The scientists involved in the new study, which was published online in the March 12 issue of the journal Nature, found 50 massive galaxies as potential candidates for “arrested development” galaxies. Among these, the NGC 1277 was identified as unique because it has a central supermassive black hole that is much bigger than it ideally should be for a galaxy of that size.

"I didn't believe the ancient galaxy hypothesis initially, but finally I was surprised because it's not that common to find what you predict in astronomy," Beasley added. "Typically, the universe always comes up with more surprises that you can think about."

The researchers now hope to further study 10 other galaxies with varying degrees of “arrested development.” According to NASA, the James Webb Telescope, slated to be launched in 2019, will help researchers track and measure the motions of the globular clusters in NGC 1277 galaxy. This in turn would provide astronomers with the first chance to measure how much of early galaxies are made up of dark matter.

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