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Chandra X-Ray Observatory observations of the globular cluster M28 and its millisecond pulsar B1821-24
W. Becker, D. A. Swartz, G. G. Pavlov +8
We report here the results of the first Chandra X-Ray Observatory observations of the globular cluster M28 (NGC 6626). 46 X-ray sources are detected, of which 12 lie within one cor…
Wide field photometry of the M104 globular cluster system
Alessia Moretti, Enrico V. Held, Luca Rizzi +3
We present preliminary results of a wide field study of the globular cluster system of NGC4594, the Sombrero galaxy. The galaxy was observed in B, V, and R using the Wide Field Ima…
Preliminary results from VLT (FORS1) photometry of NGC 6397
G. Andreuzzi, V. Testa, G. Marconi +3
We present VLT (FORS1) photometry of the lower main sequence (MS) of the Galactic Globular Cluster (GGC) NGC 6397, for stars located in 2 fields extending from a region near the cl…
Lithium during the AGB evolution in young open clusters of the Large Magellanic cloud
C. Maceroni, V. testa, B. Plez +2
We present the results of mid-resolution spectroscopy in the LiI 6708 AA spectral region of Asymptotic Giant Branch (AGB) stars belonging to young open clusters of the Large Magell…