2005/11/29 by Sang-Chul Kim, Sang Chul Kim, Hong-Soo Park +16
Earth and Planetary Sciences · Physics and Astronomy · #Cluster (spacecraft) #Distance modulus #Geological Formations and Processes Exploration #Metallicity #Open cluster #Photometry (optics) #Solar and Space Plasma Dynamics #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.5303/jkas.2005.38.4.429
published as J.Korean Astron.Soc. 38 (2005) 429-435 · Accepted by the Journal of the Korean Astronomical Society, 2005 December issue
arxiv created 2005/11/29 · openalex publication_date 2005/12/01 · arxiv updated 2015/06/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present BV CCD photometry for the open clusters Czernik 24 and Czernik 27. These clusters have never been studied before, and we provide, for the first time, the cluster parameters; reddening, distance, metallicity and age. Czernik 24 is an old open cluster with age <TEX>1.8±0.2Gyr</TEX>, metallicity <TEX>[Fe/H]=-0.41±0.15dex</TEX>, distance modulus <TEX>(m-M)0=13.1±0.3mag</TEX> (<TEX>d=4.1±0.5kpc</TEX>), and reddening <TEX>E(B-V)=0.54±0.12mag</TEX>. The parameters for Czernik 27 are estimated to be <TEX>age=0.63±0.07Gyr</TEX>, <TEX>[Fe/H]=-0.02±0.10dex</TEX>, <TEX>(m-M)0=13.8±0.2mag</TEX> (<TEX>d=5.8±0.5kpc</TEX>), and <TEX>E(B-V)=0.15±0.05mag</TEX>. The metallicity and distance values for Czernik 24 are consistent with the relation between the metallicity and the Galactocentric distance of other old open clusters. We find the metallicity gradient of 51 old open clusters including Czernik 24 to be <TEX>Δ[Fe/H]/ΔRgc=-0.064 ±0.009dex kpc-1</TEX>.