Penn State University - 07 June 2010
An international team of scientists, led by Penn State Distinguished Professor Donald Schneider, has announced its completion of a massive census in which they identified the quasars in one quarter of the sky. The team's work is part of the Sloan Digital Sky Survey (SDSS), a nearly decade-long discovery-and-research effort using a 2.5 meter telescope located at Apache Point Observatory in New Mexico. The completed catalog of quasars, which will be published in the June 2010 issue of the Astronomical Journal, includes 105,783 quasars, more than 96 percent of which were discovered by the SDSS.
The Sloan Digital Sky Survey Quasar Catalog. V. Seventh Data Release
- The Astronomical Journal 139 6 2360 (June 2010) DOI: 10.1088/0004-6256/139/6/2360