Where’s the CUSP? (Or CCD Photometry of Globular Cluster Cores)

1985 ◽  
pp. 89-92 ◽  
Author(s):  
Phyllis M. Lugger ◽  
Haldan Cohn ◽  
Jonathan E. Grindlay
Keyword(s):  
Globular Cluster ◽  
Ccd Photometry ◽  
Cluster Cores

scholarly journals Where's the CUSP? (or CCD Photometry of Globular Cluster Cores)

1985 ◽  
Vol 113 ◽  
pp. 89-92
Author(s):  
Phyllis M. Lugger ◽  
Haldan Cohn ◽  
Jonathan E. Grindlay
Keyword(s):  
Globular Cluster ◽  
Globular Clusters ◽  
Surface Brightness ◽  
Core Structure ◽  
Cluster Core ◽  
Core Collapse ◽  
Surface Photometry ◽  
National Observatory ◽  
Ccd Photometry ◽  
Cluster Cores

UBVR CCD surface photometry for a sample of 11 globular clusters has been obtained at the Kitt Peak National Observatory (KPNO) #1 0.9 m telescope as part of a major study of globular cluster core structure. These data are being used to test for the presence of central cusps in the surface brightness profiles', which are expected to be present in clusters which have already undergone core collapse (Cohn and Hut 1984).

scholarly journals CCD Observations of Variable Stars in Globular Clusters

1989 ◽  
Vol 111 ◽  
pp. 285-285
Author(s):  
H.A. Smith ◽  
J.R. Kuhn ◽  
J. Curtis
Keyword(s):  
Globular Cluster ◽  
Globular Clusters ◽  
Variable Stars ◽  
Michigan State University ◽  
State University ◽  
Ccd Photometry ◽  
Rr Lyrae ◽  
Short Period ◽  
Ccd Observations ◽  
Period Variable

AbstractBVR observations of the relatively metal-rich globular cluster NGC 6388 have been obtained with a CCD on the CTIO 0.9 m telescope. Eighteen possible short period variable stars have been discovered in or near the cluster. At least 10 of these are probable RR Lyrae members of NGC 6388. We confirm the finding of Hazen and Hesser that this cluster is one of the most metal-rich to contain a significant number of RR Lyraes. A program of CCD photometry of field and cluster variable stars has been initiated on the 0.6m telescope of the Michigan State University Observatory.

scholarly journals Double-radial-mode SX Phoenicis stars in the globular clusters NGC 5466 and M71

2004 ◽  
Vol 193 ◽  
pp. 166-170
Author(s):  
Young-Beom Jeon ◽  
Myung Gyoon Lee ◽  
Seung-Lee Kim ◽  
Ho Lee
Keyword(s):  
Time Series ◽  
Globular Cluster ◽  
Fundamental Mode ◽  
Globular Clusters ◽  
Radial Mode ◽  
Ccd Photometry ◽  
Period Ratio

AbstractThrough time-series CCD photometry of the globular cluster NGC 5466, we found three double-radial-mode SX Phe stars, all of which are consistent with the theoretical period ratio of the first overtone mode to the fundamental mode (P1H/PF); their period ratios are 0.7825, 0.7826 and 0.7919, respectively. We also detected a double-radial-mode SX Phe star in M71. Its period ratio is 0.781, which is also consistent with the theoretical value.

scholarly journals The Abundance of the LMC Globular Cluster NGC 2213

1988 ◽  
Vol 126 ◽  
pp. 579-580
Author(s):  
Doug Geisler
Keyword(s):  
Globular Cluster ◽  
Main Sequence ◽  
High Accuracy ◽  
Magellanic Cloud ◽  
New Technique ◽  
Distance Modulus ◽  
Ccd Photometry ◽  
Cloud Clusters ◽  
A New Technique ◽  
Using Data

A new technique for determining accurate abundances in distant giants - Washington CCD photometry - has been applied to the intermediate-age LMC globular cluster NGC 2213. An abundance of −0.40 ± 0.15 was found from the analysis of 42 giants with V < 20, using data obtained with the 1.5 m telescope. Combined with published main-sequence photometry, the derived abundance indicates a true LMC distance modulus of 18.2 ± 0.2. A likely CN strong giant near the tip of the giant branch is identified. Abundances are also derived for a sample of 27 field giants. Results indicate that one could determine both the age and abundance of Magellanic Cloud clusters with high accuracy from Washington photometry using the 4 m in less than one hour of observing time per cluster.

scholarly journals Red giant depletion in globular cluster cores

2004 ◽  
Vol 348 (2) ◽  
pp. 679-686 ◽  
Author(s):  
Martin E. Beer ◽  
Melvyn B. Davies
Keyword(s):  
Globular Cluster ◽  
Red Giant ◽  
Cluster Cores

CCD Photometry of the Globular Cluster ESO 452-SC11

2006 ◽  
Vol 131 (5) ◽  
pp. 2543-2550 ◽  
Author(s):  
Alexis S. M. Cornish ◽  
Randy L. Phelps ◽  
Michael M. Briley ◽  
Eileen D. Friel
Keyword(s):  
Globular Cluster ◽  
Ccd Photometry

CCD photometry of the globular cluster Palomar 5

1986 ◽  
Vol 91 ◽  
pp. 842 ◽  
Author(s):  
G. H. Smith ◽  
R. D. McClure ◽  
P. B. Stetson ◽  
J. E. Hesser ◽  
R. A. Bell
Keyword(s):  
Globular Cluster ◽  
Ccd Photometry
Sign in / Sign up

Export Citation Format

Share Document