Snapshot Distances to Type IA Supernovae -- All in 'One' Night's Work

Details Snapshot Distances to Type IA Supernovae -- All in 'One' Night's Work Snapshot Distances to Type IA Supernovae -- All in 'One' Night's Work

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.8505n&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #85.05; Bulletin of the American Astronomical Society, Vol. 29, p.1351

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We present an empirical method which measures the distance to a Type Ia Supernova with a precision of ~ 10% from a single night's data. This method measures the supernova's age and luminosity/light curve parameter from a spectrum, and the extinction and distance from a photometric epoch. We are able to verify the precision of this method from error propagation calculations, Monte Carlo simulations of well-sampled SNe Ia, and the Hubble diagram of scarcely observed supernovae. With the reduction in telescope time needed, this method is 3 to 4 times more efficient for measuring cosmological parameters than conventional light curve based distance estimates.

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