The Turn-off Point of Omega Centauri

Photoelectric and photographic photometry to below V = 19 in the globular cluster ω Cen indicate that the main sequence turn-off point occurs at about V = 18.3, nearly four magnitudes below the horizontal branch. ω Cen thus differs from most other clusters which have been studied, since this magnitu...

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Bibliographic Details
Published inMonthly notices of the Royal Astronomical Society Vol. 167; no. 1; pp. 51P - 56P
Main Authors Cannon, R. D., Kontizas, Mary
Format Journal Article
LanguageEnglish
Published Oxford, UK Oxford University Press 01.04.1974
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Summary:Photoelectric and photographic photometry to below V = 19 in the globular cluster ω Cen indicate that the main sequence turn-off point occurs at about V = 18.3, nearly four magnitudes below the horizontal branch. ω Cen thus differs from most other clusters which have been studied, since this magnitude difference is usually near 3.4 mag. Some implications are discussed briefly.
Bibliography:ark:/67375/HXZ-S880K3ZN-Q
istex:9A014E57B914FFE49B3A5628C40CA790250AD20B
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/167.1.51P