Researchers report first observation of early stages of creation of a starforming

first_imgA massive, very young clump in a disk galaxy at z = 1.987. Credit: Nature 521, 54–56 (07 May 2015) doi:10.1038/nature14409 (Phys.org)—An international team of space scientists has identified and observed the early stages of the creation of a star-forming clump, the first ever observed. In their paper published in the journal Nature, the team describes how they analyzed imaging and spectroscopy from the Hubble Space telescope to identify the clump, which they believe is likely to one day form a star. © 2015 Phys.org Citation: Researchers report first observation of early stages of creation of a star-forming clump (2015, May 7) retrieved 18 August 2019 from https://phys.org/news/2015-05-early-stages-creation-star-forming-clump.html As the team reports, star forming clumps come about in dense clouds of gas and dust which are known as dark nebulae—in such clouds, particularly in dense portions, the materials tend to coalesce due to gravitational attraction, into clumps—these clumps eventually evolve into proto-stars, and then finally stars. The galaxy under observation (in the cluster CL J144910856) was calculated to have come into existence approximately three billion years after the Big Bang—making it less than ten million years old. Dark nebulae that produce stars are known informally as star factories and the team suggests that they are responsible for the formation of the central bulge in spiral galaxies. They estimate the clump they have been studying has up to a billion bits of material and note that it was only because of the very high resolution offered by the Hubble telescope that they were able to make the discovery at all. They also suggest that their observations indicate that star formation regions are rare, but when they do exist, tend to have a very long lifespan. Thus far, they report, they have studied 68 galaxies in the cluster for signs of rapid star formation.It is hoped that the finding by the team will lead to a better understanding of star formation and by extension, galaxy formation, particularly in the early years of the universe. The clump under observation in this latest observation is believed to be very young, which could offer clues as to its initial state—currently the process by which clumps start to form is not really understood.The researchers suggest that many more such clumps, particularly larger samples, will need to found and studied before true insights into the nature of early star formation can be gained. Image: Hubble eyes galactic refurbishmentcenter_img This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. More information: An extremely young massive clump forming by gravitational collapse in a primordial galaxy, Nature, 521, 54–56 (07 May 2015) DOI: 10.1038/nature14409 . Arxiv: https://sp2.img.hsyaolu.com.cn/wp-shlf1314/2020/IMG8205.jpg” alt=”last_img” />

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