Color Gradient in the King Type Globular Cluster NGC 7089

We use BV CCD images to investigate the reality of the color gradient within a King type globular cluster NGC 7089. Surface photometry shows that there is a strong radial color gradient in the central region of the cluster in the sense of bluer center with the amplitude of -0.39 +/- 0.07 mag/arcsec2...

Full description

Bibliographic Details
Main Authors: Young-Jong Sohn, Mun-Suk Chun, Jae-Woo Lee, Jungmin Oh
Format: Article
Language:English
Published: The Korean Space Science Society 1999-12-01
Series:Journal of Astronomy and Space Sciences
Online Access:http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1999/v16n2/OJOOBS_1999_v16n2_91.pdf