Lyngå 7: a new disk globular cluster?

Details Lyngå 7: a new disk globular cluster? Lyngå 7: a new disk globular cluster?

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...273..415o&link_type=abstract

Astronomy and Astrophysics, Vol. 273, No. 2, p. 415 - 420

Astronomy and Astrophysics

Astrophysics

33

Globular Clusters, Metallicity, Galactic Structure

Scientific paper

The authors have observed Lyngå 7, previously catalogued as an open cluster, in B, V and I. The Colour-Magnitude Diagrams (CMDs) show that it is old like a globular cluster, or an extremely old thick/old disk cluster. It has a red horizontal branch and the CMD morphology indicates that it is metal rich, intermediate between 47 Tuc and NGC 6553. The authors derive a reddening of E(B-V) = 0.72 and a distance of ≍ 6.7 kpc from the Sun. Its position in the Galaxy shows that it should belong to the metal-rich disk system of globular clusters, being close to its edge.

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