Lyα Galaxy
A Lyman-alpha emitter (LAE) is a type of distant galaxy that emits Lyman-alpha radiation from neutral hydrogen. Most known LAEs are extremely distant, and because of the finite travel time of light they provide glimpses into the history of the universe. They are thought to be the progenitors of most modern Milky Way type galaxies. These galaxies can be found nowadays rather easily in narrow-band searches by an excess of their narrow-band flux at a wavelength which may be interpreted from their redshift: : 1+z=\frac where z is the redshift, \lambda is the observed wavelength, and 1215.67 Å is the wavelength of Lyman-alpha emission. The Lyman-alpha line in most LAEs is thought to be caused by recombination of interstellar hydrogen that is ionized by an ongoing burst of star-formation. Such Lyman alpha emission was first suggested as a signature of young galaxies by Bruce Partridge and P. J. E. Peebles in 1967. Experimental observations of the redshift of LAEs are important in ...
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Lyman Alpha Blob
Lyman may refer to: Places Ukraine * Lyman, Ukraine United States * Lyman, Iowa * Lyman, Maine * Lyman, Mississippi * Lyman, Nebraska * Lyman, New Hampshire * Lyman, Oklahoma * Lyman, South Carolina * Lyman, South Dakota * Lyman County, South Dakota * Lyman, Utah * Lyman, Washington * Lyman, Wyoming Other uses * Lyman (crater), a lunar impact crater * Lyman (name) * Lyman series of hydrogen spectral lines See also * Liman (other) * Lyman High School (other) Lyman High School may refer to: * Lyman Memorial High School, Lebanon, Connecticut * Lyman High School (Florida), Longwood, Florida * Lyman High School (South Dakota), Presho, South Dakota * Lyman High School (Wyoming), Lyman, Wyoming See also ...