Improved Methods for Identifying Moving Groups

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dc.creatorde Bruijne, J. H. J.
dc.creatorHoogerwerf, R.
dc.creatorBrown, A. G. A.
dc.creatorAguilar, L. A.
dc.creatorde Zeeuw, P. T.
dc.date1997-07-08
dc.date.accessioned2026-07-07T02:23:47Z
dc.date.available2026-07-07T02:23:47Z
dc.descriptionWe present a new procedure for the identification of moving groups. It is a combination of two independent member selection methods. One is a modern implementation of a classical convergent point method for proper motion data. The other objectively identifies moving groups in velocity space using proper motions and parallaxes. We briefly describe both methods, and illustrate their power by applying them to Hipparcos measurements of a field containing the Upper Scorpius subgroup of the Scorpio-Centaurus association (Sco OB2). We show how our membership selection procedure not only improves the list of previously known B and A-type members, but also identifies many new members, including a significant number of F stars. We apply our procedure to other nearby OB associations elsewhere in these proceedings (Hoogerwerf et al.; de Zeeuw et al.).
dc.description4 pages, 3 Postscript figures, LaTeX using venice97.sty, twocolumn.sty; to appear in Proceedings of the Hipparcos Venice '97 Symposium, ESA-SP 402
dc.identifierhttps://arxiv.org/abs/astro-ph/9707090
dc.identifierhttp://arxiv.org/abs/astro-ph/9707090
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/11380
dc.subjectAstrophysics
dc.titleImproved Methods for Identifying Moving Groups
dc.typetext

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