A Near-Infrared Imaging Survey of the rho Ophiuchi Cloud Core

Details A Near-Infrared Imaging Survey of the rho Ophiuchi Cloud Core A Near-Infrared Imaging Survey of the rho Ophiuchi Cloud Core

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.9104b&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #91.04; Bulletin of the American Astronomical Society, Vol. 28, p.1394

Astronomy and Astrophysics

Astronomy

Scientific paper

We report results of a JHK imaging survey of the central square degree of the rho Ophiuchi star-forming cloud core, the largest such survey to date. We catalog nearly 4500 sources, the vast majority being background stars. Our 90%, 10sigma completeness limits are J=15.0, H=14.5, and K=14.0. Our derived positions for these sources are good to ~ 1.2('') , derived from comparison with HST guide stars. We have also cross-identified our sources with all existing published near-infrared surveys, resulting in one or more identifications for 449 sources. Of these, 79 sources have four or more independent magnitude measurements at K. Using rather strict criteria (sigma_K >= 0.4 mag, sigma_ {J,H} >= 0.2), we identify thirteen variable sources. Follow-up work on newly identified cluster members is in progress (see abstract presented by Casement, Barsony & Ressler elsewhere at this Meeting).

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