June 20, 2003Open Access
View Full PaperA star-forming galaxy atz= 5.78 in theChandraDeep Field South
Key Points
Key points are not available for this paper at this time.
Abstract
We report the discovery of a luminous z=5. 78 star-forming galaxy in the Chandra Deep Field South. This galaxy was selected as an `i-drop' from the GOODS public survey imaging with HST/ACS (object 3 in Stanway, Bunker & McMahon 2003, astro-ph/0302212). The large colour of (i'-z') AB=1. 6 indicated a spectral break consistent with the Lyman-alpha forest absorption short-ward of Lyman-alpha at z~6. The galaxy is very compact (marginally resolved with ACS with a half-light radius of 0. 08arcsec, so rₕl5. Our spectroscopic redshift for this object confirms the validity of the i'-drop technique of Stanway, Bunker & McMahon (2003) to select star-forming galaxies at z~6.