Australian-led astronomers find the most star that is iron-poor the Galaxy, hinting in the nature for the first stars when you look at the Universe.
A newly discovered ancient star containing a record-low amount of iron carries proof of a class of even older stars, long hypothesised but assumed to have vanished.
In a paper published when you look at the journal Monthly Notices associated with the Royal Astronomical Society: Letters, researchers led by Dr Thomas Nordlander for the ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) confirm the presence of an ultra-metal-poor red giant star, found in the halo for the Milky Way, on the other hand for the Galaxy about 35,000 light-years from Earth.
Dr Nordlander, through the Australian National University (ANU) node of ASTRO 3D, along with colleagues from Australia, the usa and Europe, located the star utilising the university’s dedicated SkyMapper Telescope during the Siding Spring s Observatory in NSW.
Spectroscopic analysis indicated that an iron was had by the star content of just one part per 50 billion.
“That’s like one drop of water in an Olympic pool that is swimming” explains Dr Nordlander.
“This incredibly anaemic star, which likely formed just a couple hundred million years after the major Bang, has iron levels 1.5 million times lower than compared to the Sun.”
The very stars that are first the Universe are thought to possess consisted of only hydrogen and helium, along side traces of lithium. Read More