Wednesday, October 20, 2010
Early Bloomer: Faraway Galaxy Pushes Cosmic View Closer to the Dawn of the Universe: Scientific American
Early Bloomer: Faraway Galaxy Pushes Cosmic View Closer to the Dawn of the Universe: Scientific American: At the redshift inferred for UDFy-38135539, the hydrogen line happens to fall in a quiet part of the infrared spectrum, but the signal-to-noise ratio leaves some open questions. "It's right on the edge of what you'd believe, to be frank," Dunlop says, noting that confirmation would be much easier with a space-borne infrared spectrograph such as that planned for NASA's James Webb Space Telescope (JWST). But that technology will not be available until JWST launches in 2014, at the earliest. "So you're faced with trying to follow these things up from the largest telescopes on the ground," Dunlop says.