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Hubble Space Telescope observations of an outer field in omega Centauri: A definitive helium abundance

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Date

2012

Authors

King, I R
Bedin, L R
Cassisi, S
Milone, Antonino
Bellini, A
Piotto, G
Anderson, Jay
Pietrinferni, A
Cordier, D

Journal Title

Journal ISSN

Volume Title

Publisher

University of Chicago Press

Abstract

We revisit the problem of the split main sequence (MS) of the globular cluster ω Centauri, and report the results of two-epoch Hubble Space Telescope observations of an outer field, for which proper motions give us a pure sample of cluster members, and a

Description

Keywords

Keywords: globular clusters: individual (NGC 5139); Hertzsprung-Russell and C-M diagram; proper motions; stars: abundances; stars: Population II

Citation

URI

http://hdl.handle.net/1885/78134

Collections

ANU Research Publications

Source

Astronomical Journal

Type

Journal article

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1088/0004-6256/144/1/5

Restricted until

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01_King_Hubble_Space_Telescope_2012.pdf (9.03 MB)

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