There's another good article on this at the Keck Observatory site [1] and it has a great graphic [2].<p>The site of the "<i>Astrophysical Journal Letters</i>" journal (iop.org) has a public abstract/article for mentioned paper, "<i>Lyα EMISSION FROM A LUMINOUS z = 8.68 GALAXY: IMPLICATIONS FOR GALAXIES AS TRACERS OF COSMIC REIONIZATION</i>" [3], but the paper itself seems to be paywalled [4].<p>[1]
<a href="http://www.keckobservatory.org/recent/entry/new_record_keck_observatory_confirms_most_distant_galaxy" rel="nofollow">http://www.keckobservatory.org/recent/entry/new_record_keck_...</a><p>[2]
<a href="http://www.keckobservatory.org/images/press_images/Adi3.001.jpg" rel="nofollow">http://www.keckobservatory.org/images/press_images/Adi3.001....</a><p>[3]
<a href="http://iopscience.iop.org/2041-8205/810/1/L12/article" rel="nofollow">http://iopscience.iop.org/2041-8205/810/1/L12/article</a><p>[4]
<a href="http://iopscience.iop.org/2041-8205/810/1/L12/pdf/2041-8205_810_1_L12.pdf" rel="nofollow">http://iopscience.iop.org/2041-8205/810/1/L12/pdf/2041-8205_...</a>