SIMBAD references

2002AJ....124.2899K - Astron. J., 124, 2899-2904 (2002/November-0)

Close binaries in the η Chamaeleontis cluster.

KOEHLER R. and PETR-GOTZENS M.G.

Abstract (from CDS):

We have used speckle interferometry and adaptive optics observations to search for multiple systems among 13 stars in the η Chamaeleontis cluster. We discovered two previously unknown subarcsecond binaries. Placing the components in infrared color-magnitude diagrams shows that most members of η Cha are coeval. Repeated observations of the binary RECX 1 allow us to determine a preliminary orbit and derive a system mass of about 2 M☉.

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Journal keyword(s): Stars: Binaries: General - Infrared Radiation - Galaxy: Open Clusters and Associations: Individual: Name: η Chamaeleontis - Stars: Pre-Main-Sequence - Techniques: High Angular Resolution

Simbad objects: 13

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