Abstract
view Abstract Citations (8) References (26) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Ultraviolet Morphologies of Globular Clusters Observed with the Ultraviolet Imaging Telescope Smith, Eric P. ; Landsman, Wayne B. ; Hill, Robert S. ; Bohlin, Ralph C. ; Cheng, Kwang-Ping ; Hintzen, Paul ; Maran, Stephen P. ; O'Connell, Robert W. ; Roberts, Morton S. ; Smith, Andrew M. ; Stecher, Theodore P. Abstract We compare the ultraviolet (UV) and visible morphologies of globular clusters M3, M13, M79, and ω Cen, based on observations with the Ultraviolet Imaging Telescope (UIT) and ground-based telescopes. Global similarities (e.g., core radii) are found, along with other interesting features. These include a ring (r = 2'.2) of UV-bright stars in ω Cen and a group of UV-bright objects near the center of M79. We find a color gradient in M79 but in no other cluster. The helium abundance in M79 is Y = 0.21±004 based on UV and visible color-magnitude diagrams. Publication: The Astrophysical Journal Pub Date: December 1993 DOI: 10.1086/173442 Bibcode: 1993ApJ...418..850S Keywords: GALAXY: GLOBULAR CLUSTERS: GENERAL; STARS: HORIZONTAL-BRANCH; ULTRAVIOLET: STARS full text sources ADS | data products SIMBAD (5) MAST (2)
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