Telescope and site requirements for the next generation of deep galaxy surveys

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EditorSearch for: Whitelock, Patricia Ann; Search for: Dennefeld, Michel; Search for: Leibundgut, Bruno
Proceedings titleScientific Requirements for Extremely Large Telescopes
Series titleProceedings of the International Astronomical Union; Volume 1
ConferenceThe Scientific Requirements for Extremely Large Telescopes, Proceedings of the 232nd Symposium of the International Astronomical Union, November 14-18, 2005, Cape Town, South Africa
Pages214217; # of pages: 4
Subjectsite testing; telescopes; galaxies: fundamental parameters
AbstractA key pursuit of 10-meter-class optical-infrared telescopes is to use deep imaging and spectroscopic surveys to track the evolution of galaxy structure. Future telescopes will continue this quest back to the epoch of the first galaxies, reaching ever fainter structures at ever higher redshifts. Apertures of 20, 30, 50, and 100 meters equipped with the latest in adaptive optics will look out from the world’s foremost observing sites, and incrementally improve on point-source sensitivity. But how will they compare for studying extended structures? Scientific avenues that can be pursued with poorer spatial resolution, but require low backgrounds - for example, tracing the formation history of bulges - might allow for tradeoffs between aperture, site, and cost. To explore this parameter space I use a published model of average seeing at any site, develop a simple telescope performance and cost model, and simulate resultant galaxy images over a wide range of absolute brightness, size, bulge fraction, inclination, and redshift. I present a graphical interface to the model which allows side-by-side visual comparison of a given galaxy for any two observatories. This approach is intuitive and flexible, although probably not well suited for detailed analysis of a particular telescope. I compare observatory cost against the relative accuracy of measured galaxy bulge-to-total ratio, and comment on telescope and site requirements.
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PublisherCambridge University Press
International Astronomical Union
AffiliationNRC Herzberg Institute of Astrophysics; National Research Council Canada
Peer reviewedYes
NPARC number13053611
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Record identifier911cf71c-ed98-4eaa-8500-2ec43ed3ecde
Record created2009-11-25
Record modified2017-06-02
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