Distant Milky Way M Giants


The Most Distant Stars in the Milky Way

Below is the refereed version of our letter to the Astrophysical Journal titled “The Most Distant Stars in the Milky Way”, along with the pre-print version.

The press release detailing the discovery of these objects can be found here.

The supplementing images (ULAS J0015+01, ULAS J0744+25, Distant Red Giant) and movie (available soon) are also available. 

Suggested captions for the first two images:
“These images, acquired by the Sloan Digital Sky Survey, show the fields of the two distant M giants, ULAS J0015+01 and ULAS J0744+25.  These two red giant stars are the most distant Milky Way stars ever observed. Credit: Sloan Digital Sky Survey”

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This simulated image demonstrates how small the Milky Way would look from the location of ULAS J0744+25, nearly 775,000 light years away.  This star, along with ULAS J0015+01, are the most distant stars ever associated with our Galaxy, and are about five times further away than the Large Magellanic Cloud, one of the Milky Way's closest galactic neighbors.  Credits: Visualization Software:  Uniview by SCISS Data: SOHO (ESA & NASA), John Bochanski (Haverford College) and Jackie Faherty (American Museum of Natural History and Carnegie Institute's Department of Terrestrial Magnetism)