2004/01/26 by F. Thim, Frank Thim, J. G. Hoessel +7 · 4 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/382244
54 pages, 8 figures, 8 tables, accepted for publication in the Astronomical Journal
arxiv created 2004/01/26 · openalex publication_date 2004/04/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Repeated imaging observations of NGC 4395 were made with the WIYN 3.5 m and the KPNO 2.1 m telescopes. From the photometry of the resolved brighter stars in this galaxy, 11 Cepheids with periods ranging between 12 and 90 days have been identified. The true distance modulus has been derived from the apparent distance moduli in g , r , and i . The distance modulus is 28.02 ± 0.18 based on the LMC period-luminosity (P-L) relation of Sandage, Reindl, & Tammann; this corresponds to a distance of 4.0 ± 0.3 Mpc. Using the P-L relation from Madore & Freedman, the distance modulus is 28.15 ± 0.18, which corresponds to a distance of 4.3 ± 0.4 Mpc. The reddening is calculated to be E ( g – r ) = 0.06 ± 0.08 and E ( r – i ) = 0.10 ± 0.08, again from the distance moduli μ g , μ r , and μ i . In addition, 37 other variables have been detected, the majority of which have definite periods; they are probably all red long-period variables.