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Title:
The distance to Supernova 1998aq in NGC 3982
Authors:
Stetson, Peter B.; Gibson, Brad K.
Affiliation:
AA(Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council, 5071 W. Saanich Road, Victoria, BC, V9E 2E7, Canada ), AB(Centre for Astrophysics & Supercomputing, Swinburne University, Mail #31, PO Box 218, Hawthorn, Victoria, 3122, Australia)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 328, Issue 1, pp. L1-L4. (MNRAS Homepage)
Publication Date:
11/2001
Origin:
MNRAS
MNRAS Keywords:
SUPERNOVAE: INDIVIDUAL: SN 1998AQ, CEPHEIDS, GALAXIES: DISTANCES AND REDSHIFTS, GALAXIES: INDIVIDUAL: NGC 3982, DISTANCE SCALE
DOI:
10.1046/j.1365-8711.2001.05005.x
Bibliographic Code:
2001MNRAS.328L...1S

Abstract

The distance to NGC 3982, host galaxy to the Type Ia supernova SN 1998aq, is derived using 32 Cepheids discovered in archival multi-epoch Hubble Space Telescope observations. Employing recent Large Magellanic Cloud Cepheid period-luminosity relations and absolute zero-point, we find a distance to NGC 3982 of [formmu3]20.5+/-0.8 (r) +/-1.7 (s)Mpc, including both random (r) and systematic (s) uncertainties, and ignoring any metallicity dependence in the Cepheid period-luminosity relation. Still unpublished light curve photometry promises to make SN 1998aq one of the most important calibrators for the Type Ia supernova decline rate-peak luminosity relationship.

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