THE ASTRONOMICAL JOURNAL       VOLUME 105, NUMBER 4, PAGE 1441       APRIL 1993

                           THE OPEN CLUSTER IC 4665

                              CHARLES F. PROSSER

 Harvard-Smithsonian Center for Astrophysics, 60 Garden St., MS-66, Cambridge,
                              Massachusetts 02138


                                   ABSTRACT

    The results of a combined astrometric, photometric, and spectroscopic
    program to identify members of the open cluster IC 4665 are presented.
    Numerous new proper motion/photometric candidate members and at least
    23 M dwarfs with H-alpha emission have been identified.  A reanalysis
    of IC 4665's age using different methods yields conflicting results
    ranging from approx. 3x10^7 yr to the age of the Pleiades.  This study
    provides a list of candidate cluster members in the intermediate and
    low-mass regime of this cluster.  Future spectroscopic observations of
    these candidates should eventually identify true cluster members.  The
    results of new echelle observations of some candidates and the
    photometric monitoring of one apparent cluster member are given in an
    appendix.