Orbital Phase Dependence of Globular Cluster’s Tidal Radii

Chin. Phys. Lett.

2004, Vol. 21

Issue (2): 418-420 DOI:

Original Articles

Orbital Phase Dependence of Globular Cluster’s Tidal Radii

WU Zhen-Yu;ZHOU Xu;MA Jun

National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012

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WU Zhen-Yu, ZHOU Xu, MA Jun 2004 Chin. Phys. Lett. 21 418-420

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Abstract The orbits for a sample of 45 galactic globular clusters are calculated using positions and spatial velocities based on recent compilations as well as new measurements of their absolute proper motions. The perigalactic positions of each cluster are used to determine their theoretical tidal radii in the given galactic model. The orbital phase dependence between the theoretical and observed tidal radii is evidenced.

Keywords: 98.20.-d 98.20.+z

Published: 01 February 2004

PACS:	98.20.-d	(Stellar clusters and associations)
	98.20.+z

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2004/V21/I2/0418

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