Observational Cadence vs. Exposure Time Trade-off for Supernova Surveys

Details Observational Cadence vs. Exposure Time Trade-off for Supernova Surveys Observational Cadence vs. Exposure Time Trade-off for Supernova Surveys

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.9813k&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #98.13; Bulletin of the American Astronomical Society, V

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To extract the maximum cosmological information from type Ia supernovae, magnitude measurement errors should not exceed the intrinsic dispersion of 0.15 magnitudes. This requirement has a direct impact on any supernova cosmology mission design. We explore the observational cadence (how frequently the supernova flux is sampled -the light curve), the exposure time per sampling, and trade-offs between these two parameters and the obtainable number of supernovae given a limited survey time. Taking into account realistic experimental constraints, we propagate measurement errors throughto light curve fit parameters and ultimately distance measurement precision.

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