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UBV photometry of NGC 581

Published online by Cambridge University Press:  04 August 2017

A. Osman ,
A. Khalil ,
A. Aiad  and
M. Marie
A. Osman
Affiliation:
Helwan Observatory, Helwan, Egypt
A. Khalil
Affiliation:
Helwan Observatory, Helwan, Egypt
A. Aiad
Affiliation:
Astronomy Department, Cairo University, Cairo, Egypt
M. Marie
Affiliation:
Astronomy Department, Cairo University, Cairo, Egypt

Abstract

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NGC 581 was studied using new plates taken by the Kottamia 74′ telescope and measured by the Helwan Iris photometer. A mean value of 3.13×107 years and 2334 pcs were found for the age and distance of the cluster respectively. The cluster has an evolved giant branch.

Type
I. EVOLUTION OF LOW AND INTERMEDIATE MASS STARS OBSERVATIONS AND MODELS
Information
Symposium - International Astronomical Union , Volume 105: Observational Tests of the Stellar Evolution Theory , 1984 , pp. 119 - 120
Copyright
Copyright © Reidel 1984 

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