Canadian survey science
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Canadian Survey Science. Michael Balogh Department of Physics and Astronomy University of Waterloo. Extragalactic astrophysics and the Survey. Galaxy formation/evolution is driven by observations Need large statistical samples of very faint objects, over a wide wavelength range

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Canadian Survey Science

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Canadian survey science

Canadian Survey Science

Michael Balogh

Department of Physics and Astronomy

University of Waterloo


Extragalactic astrophysics and the survey

Extragalactic astrophysics and the Survey

  • Galaxy formation/evolution is driven by observations

  • Need large statistical samples of very faint objects, over a wide wavelength range

  • Cosmic variance and environmental effects requires wide field


What we missed

What we missed

  • No direct Canadian participation in Sloan Digital Sky Survey

    • The dominant survey of the last 10 years

    • Fourth-most cited paper since 2000, behind only WMAP


Future from the ground

Future from the ground


Canadian survey science

LSST

  • Will supersede most ground-based imaging

  • Not yet funded

  • Open to international participation

  • Cost would require supporting operations amounting to $40M at a pro-rated level

    • e.g. if Canadian users represent 5% of the total, cost would be $2M per year

  • Spectroscopic follow-up? Good basis for a dedicated wide-field 8-m spectrograph (WFMOS)


Wide field space imager

Wide Field Space Imager

  • 2009: CSA Discipline Working Group recommended:

    • A dedicated, diffraction-limited, UV-optical 1m aperture telescope. HST resolution with 100x field of view.

    • Or: a UV/optical channel for a targeted IR imager such as JDEM.


Wide field space imager1

Wide Field Space Imager

  • Awarded contract to study possible payload contributions to an international Dark Energy Mission


Summary

Summary

  • The next decade will see the beginning of several enormous surveys

    • CFHT will not be competitive in this era

    • There is currently no Canadian involvement in any of these surveys.

  • Options:

    • Buy into LSST

    • Provide WFMOS-like support to LSST

    • Contribute to a space DEM


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