The Distance to Supernova 1998aq in NGC3982

Details The Distance to Supernova 1998aq in NGC3982 The Distance to Supernova 1998aq in NGC3982

2001-10-02

arxiv.org/abs/astro-ph/0110062v1

Mon.Not.Roy.Astron.Soc. 328 (2001) L1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, 1 table, LaTeX (mn.sty). Accepted for publication in the Monthly Notices of the Royal Astronomical Society

Scientific paper

10.1046/j.1365-8711.2001.05005.x

The distance to NGC3982, host galaxy to the Type Ia supernova SN1998aq, 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 NGC3982 of 20.5+/-0.8(r)+/-1.7(s) Mpc, including both random (r) and systematic (s) uncertainties, and ignoring any metallicity dependency in the Cepheid period-luminosity relation. Still unpublished light curve photometry promises to make SN1998aq one of the most important calibrators for the Type Ia supernova decline rate-peak luminosity relationship.

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