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The distance to Supernova 1998aq in NGC 3982

被引：15
作者：
Stetson, PB
Gibson, BK
机构：
[1] Natl Res Council Canada, Herzberg Inst Astrophys, Dominion Astrophys Observ, Victoria, BC V9E 2E7, Canada
[2] Swinburne Univ, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2001年 / 328卷 / 01期
关键词：
supernovae : individual : SN 1998aq; Cepheids; galaxies : distances and redshifts; galaxies : individual : NGC 3982; distance scale;
D O I：
10.1046/j.1365-8711.2001.05005.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 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 Still unpublished light curve photometry promises to make SN 1998aq one of the most important calibrators for the Type Ia supernova decline rate-peak luminosity relationship.
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页码：L1 / L4
页数：4
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