Browsing by Author "Gregg, Michael D."

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    • A close separation double quasar lensed by a gas-rich galaxy 
      Gregg, Michael D.; Wisotzki, Lutz; Becker, Robert H.; Maza Sancho, José; Schechter, Paul L.; White, Richard L.; Brotherton, Michael S.; Winn, Joshua N. (The American Astronomical Society, 2000-06)
      In the course of a Cycle 8 snapshot imaging survey with the Space Telescope Imaging Spectrograph (STIS), we have discovered that the z\1.565 quasar HE 0512[3329 is a double with image separation 0A.644, di ering in ...