Astrometry and photometry in the globular cluster NGC 6712

Abstract

view Abstract Citations (77) References (26) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Astrometry and Photometry in the Globular Cluster NGC 6712 Cudworth, Kyle M. Abstract Proper motions and BV magnitudes are determined for 600 stars in the vicinity of the X-ray globular cluster NGC 6712 using plates obtained with the 5-m telescope at Palomar Observatory in 1955, with the 36-inch telescope at Lick Observatory during 1964-1979, with the 40-inch telescope at Yerkes Observatory in 1979, and with the 2.5-m telescope at Las Campanas in 1985. The data are compiled in extensive tables and graphs and characterized in detail. NGC 6712 cluster parameters calculated include E(B-V) = 0.42 + or - 0.03, distance = 6.5 + or - 0.6 kpc (if the horizontal branch V magnitude is 0.85 mag), and space velocity inconsistent with membership in the local disk subpopulation of globulars. A blue star of V magnitude about 20 mag is discussed as a candidate optical counterpart of the NGC 6712 X-ray source. Publication: The Astronomical Journal Pub Date: July 1988 DOI: 10.1086/114793 Bibcode: 1988AJ.....96..105C Keywords: Astrometry; Astronomical Photometry; Color-Magnitude Diagram; Globular Clusters; Variable Stars; X Ray Sources; Error Analysis; Galactic Clusters; Lyra Constellation; Stellar Motions; Astrophysics; CLUSTERS: GLOBULAR full text sources ADS | data products SIMBAD (147)