Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88..379e&link_type=abstract
Astronomical Journal, vol. 88, Mar. 1983, p. 379-385.
Astronomy and Astrophysics
Astronomy
24
B Stars, Cepheid Variables, Light Curve, O Stars, Star Clusters, Stellar Spectrophotometry, H Beta Line, Stellar Color, Stellar Luminosity, Visual Photometry
Scientific paper
NGC 6067 is a small, compact cluster some 6 x 10 to the 7th yr old and, at a distance of 1.25 kpc, is superposed on, but a kpc closer than, the association Norma OB1. Several of the unusual features noted in the color-luminosity array by Thackeray, Wesselink, and Harding are caused by including association stars among the cluster members. A newly discovered cepheid, CPD -53.7400 deg A (11.3 d), is a central star in the cluster but is a member of the more distant association, as is the cepheid GU Nor (3.4 d). HD 144972 (3.8 d), a newly discovered cepheid on the border of the cluster, is probably a cluster member. The new variable, -57.7400 A, is compared with the bright, small amplitude cepheid Zeta Gem in an appendix.
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