On the Origin of the Very Young Groups η and ɛ Chamaeleontis

Details On the Origin of the Very Young Groups η and ɛ Chamaeleontis On the Origin of the Very Young Groups η and ɛ Chamaeleontis

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...619..945j&link_type=abstract

The Astrophysical Journal, Volume 619, Issue 2, pp. 945-947.

Astronomy and Astrophysics

Astronomy

18

Galaxy: Open Clusters And Associations: Individual: Name: Η Chamaeleontis, Galaxy: Open Clusters And Associations: Individual: Name: Ɛ Chamaeleontis, Stars: Formation, Stars: Kinematics, Stars: Pre-Main-Sequence, Stars: Supernovae: General

Scientific paper

The three-dimensional orbits of the kinematical centers of the η Cha and ɛ Cha compact groups are retraced under the action of a general Galactic potential. The results show that both groups were formed in the same spatial region about 7 Myr ago. Their birthplace appears to be quite near the Lower Centaurus Crux subgroup of the Sco-Cen OB association. The epoch of minimum separation in the past between η Cha and ɛ Cha turns out to be consistent with the estimated evolutionary age.

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