English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The distance to NGC 4725 has been derived from Cepheid variables, as part ofthe Hubble Space Telescope Key Project on the Extragalactic Distance Scale.Thirteen F555W (V) and four F814W (I) epochs of cosmic-ray-split Wide Field andPlanetary Camera 2 observations were obtained. Twenty Cepheids were discovered,with periods ranging from 12 to 49 days. Adopting a Large Magellanic Clouddistance 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 analysisemploying the ALLFRAME software package) of 30.50 +/- 0.16 (random) +/- 0.17(systematic) mag was determined for NGC 4725. The corresponding of distance of12.6 +/- 1.0 (random) +/- 1.0 (systematic) Mpc is in excellent agreement withthat found with an independent analysis based upon the DoPHOT photometrypackage. With a foreground reddening of only E(V-I)=0.02, the inferredintrinsic reddening of this field in NGC 4725, E(V-I)=0.19, makes it one of themost highly-reddened, encountered by the HST Key Project, to date.Comment: To be published in The Astrophysical Journal, Vol. 512 (1999). 34  pages, LaTeX, 9 jpg figure

TheHubble Space TelescopeKey Project on the Extragalactic Distance Scale. XVII. The Cepheid Distance to NGC 4725