NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-19 T16:30:00 PDT
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For refcode 1999ApJ...512...48G:
Retrieve 28 NED objects in this reference.
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Copyright by American Astronomical Society. Reproduced by permission
1999ApJ...512...48G The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. XVII. The Cepheid Distance to NGC 4725 BRAD K. GIBSON, SHAUN M. G. HUGHES, PETER B. STETSON, WENDY L. FREEDMAN, ROBERT C. KENNICUTT, JR., JEREMY R. MOULD, FABIO BRESOLIN, LAURA FERRARESE, HOLLAND C. FORD, JOHN A. GRAHAM, MINGSHENG HAN, PAUL HARDING, JOHN G. HOESSEL, JOHN P. HUCHRA, GARTH D. ILLINGWORTH, DANIEL D. KELSON, LUCAS M. MACRI, BARRY F. MADORE, RANDY L. PHELPS, CHARLES F. PROSSER, ABHIJIT SAHA, SHOKO SAKAI, KIM M. SEBO, NANCY A. SILBERMANN, AND ANNE M. TURNER Received 1998 July 8; accepted 1998 September 16 ABSTRACT The distance to NGC 4725 has been derived from Cepheid variables as part of the Hubble Space Telescope Key Project on the Extragalactic Distance Scale. Thirteen F555W (V) and four F814W (I) epochs of cosmic-ray -split Wide Field and Planetary Camera 2 observations were obtained. Twenty Cepheids were discovered, with periods ranging from 12 to 49 days. Adopting a Large Magellanic Cloud distance modulus and extinction of 18.50+/-0.10 mag and E(V-I)=0.13 mag, respectively, a true reddening-corrected distance modulus (based on an analysis employing the ALLFRAME software package) of 30.50+/-0.16(random)+/-0.17(systematic) mag was determined for NGC 4725. The corresponding distance of 12.6+/-1.0(random)11.0(systematic) Mpc is in excellent agreement with that found with an independent analysis based upon the DoPHOT photometry package. With a foreground reddening of only E(V- I)=0.02, the inferred intrinsic reddening of this field in NGC 4725, E(V- I)=0.19, makes it one of the most highly reddened fields encountered by the HST Key Project to date. Subject headings: Cepheids-distance scale-galaxies: distances and redshifts-galaxies: individual (NGC 4725)
Retrieve 28 NED objects in this reference.
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