RD1

RD1 or 0140+326 RD1 is a distant galaxy, it once held the title of most distant galaxy known. [Astronomy Picture of the Day, [http://apod.nasa.gov/apod/ap980324.html A Baby Galaxy] , March 24, 1998] RD1 was discovered in March of 1998, and is at z=5.34, [arXiv, PDF|1= [http://arxiv.org/pdf/astro-ph/9803137 A Galaxy at z = 5.34] |2=209 KB, 11 March 1998] and was the first object found to exceed redshift 5. [New York Times, [http://query.nytimes.com/gst/fullpage.html?res=9B0DEFDD123DF933A15753C1A96E958260&sec=&spon=&pagewanted=3 Peering Back in Time, Astronomers Glimpse Galaxies Aborning] , October 20, 1998] It bested the previous recordholders, a pair of galaxies at z=4.92 lensed by the galaxy cluster CL 1358+62 (CL 1358+62 G1 & CL 1358+62 G2). It was the most distant object known to mankind for a few months in 1998, until BR1202-0725 LAE was discovered at z=5.64.

Citations