First accurate measurement of oxygen in distant galaxy

First accurate measurement of oxygen in distant galaxy

New York, Aug 4 (IANS) A team of astronomers from University of California-Los Angeles has made the first accurate measurement of the abundance of oxygen in a distant galaxy.

Quantifying the amount of oxygen is key to understanding how matter cycles in and out of galaxies.

“This is by far the most distant galaxy for which the oxygen abundance has actually been measured. We’re looking back in time at this galaxy as it appeared 12 billion years ago,” said Alice Shapley, professor of astronomy and co-author of the study.

Knowing the abundance of oxygen in the galaxy called COSMOS-1908 is an important stepping stone toward allowing astronomers to better understand the population of faint, distant galaxies observed when the universe was only a few billion years old and galaxy evolution.

COSMOS-1908 contains approximately 1 billion stars.

In contrast, our Milky Way galaxy contains approximately 100 billion stars.

Furthermore, COSMOS-1908 contains approximately only 20 percent the abundance of oxygen that is observed in the Sun.

“Close galaxies are much brighter, and we have a very good method of determining the amount of oxygen in nearby galaxies,” said Ryan Sanders, astronomy graduate student and the study’s lead author in a paper published in the Astrophysical Journal Letters.

“Ryan’s discovery shows we can measure the oxygen and compare these observations with models of how galaxies form and what their history of star formation is,” Shapley noted.

Leave a Reply

Please enter your comment!

The opinions, views, and thoughts expressed by the readers and those providing comments are theirs alone and do not reflect the opinions of www.mangalorean.com or any employee thereof. www.mangalorean.com is not responsible for the accuracy of any of the information supplied by the readers. Responsibility for the content of comments belongs to the commenter alone.  

We request the readers to refrain from posting defamatory, inflammatory comments and not indulge in personal attacks. However, it is obligatory on the part of www.mangalorean.com to provide the IP address and other details of senders of such comments to the concerned authorities upon their request.

Hence we request all our readers to help us to delete comments that do not follow these guidelines by informing us at  info@mangalorean.com. Lets work together to keep the comments clean and worthful, thereby make a difference in the community.

Please enter your name here