Hubble/Keck Composite Image of Gravitational Lens System: SLACS J0737+3216

This is a color composite image of the gravitational lens system, made from Hubble (blue and green filters) and Keck (red filter) data. The blue ring is the tiny background galaxy that is being stretched by the gravitational pull of the foreground "lens" galaxy at the center of the image.

About the data

The Hubble image was created from HST data from proposal 10494 : L. Koopmans (Kapteyn Astronomical Institute), T. Treu (University of California, Santa Barbara), A. Bolton (Institute for Astronomy/University of Hawaii), S. Burles (Massachusetts Institute of Technology), and L. Moustakas (Jet Propulsion Laboratory).

The science team includes: P. Marshall and T. Treu (University of California, Santa Barbara), J. Melbourne (U.C.O./Lick Observatory/Center for Adaptive Optics, University of California, Santa Cruz), R. Gavazzi (University of California, Santa Barbara), K. Bundy (University of Toronto), M. Ammons (U.C.O./Lick Observatory/Center for Adaptive Optics, University of California, Santa Cruz), A. Bolton (Institute for Astronomy/University of Hawaii), S. Burles (Massachusetts Institute of Technology), J. Larkin (University of California, Los Angeles), D. Le Mignant (W. M. Keck Observatory; Center for Adaptive Optics, University of California, Santa Cruz), D. Koo (U.C.O./Lick Observatory University of California, Santa Cruz), L. Koopmans (Kapteyn Astronomical Institute), and C. Max (U.C.O./Lick Observatory/Center for Adaptive Optics, University of California, Santa Cruz).