Journal article

The hubble space telescope extragalactic distance scale key project. VII. The discovery of cepheids in the leo I group galaxy NGC 3351

JA Graham, RL Phelps, WL Freedman, A Saha, L Ferrarese, PB Stetson, BF Madore, NA Silbermann, S Sakai, RC Kennicutt, P Harding, F Bresolin, A Turner, JR Mould, DM Rawson, HC Ford, JG Hoessel, M Han, JP Huchra, LM Macri Show all

The Astrophysical Journal | Published : 1997

Abstract

We report of the discovery and properties of Cepheid variable stars in the barred spiral galaxy NGC 3351 which is a member of the Leo I group of galaxies. NGC 3351 is one of 18 galaxies being observed as part of the Hubble Space Telescope (HST) Key Project on the Extragalactic Distance Scale which aims to determine the Hubble constant to 10% accuracy. Our analysis is based on observations made with the Wide Field Planetary Camera 2 during 1994 and early 1995. The Leo I group contains several bright galaxies of diverse types and is very suitable for linking together a number of secondary calibrators which can be employed at much greater distances than the Cepheid variables. We identify 49 pro..

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