Release 11.12 ("Hergest Ridge")


Gclusters :: Bibliographic item "gc376"

Article ID: gc376
AuthorAlcaino, G.
TitleThe tightly-bound globular cluster NGC 6388
JournalAstronomy and Astrophysics Supplement Series, vol. 44, p. 33-42
Year of publication1981 (on gclusters from 2013-09-30 11:03:02 )
AbstractA color magnitude diagram (CMD) for the highly concentrated globular cluster NGC 6388 has been obtained from 532 stars measured photographically, calibrated from a photoelectric sequence of 29 stars to a limiting magnitude of V equals 17.7. In a dense stellar field at low galactic latitude the CMD consists of a flattened giant branch and a stubby red horizontal branch, similar to 47 Tuc. The deduced reddening of E(B-V) equals 0.38 places the object at 12.6 kpc from the sun, 1.5 kpc from the galactic plane and 4.7 kpc from the galactic center. The inferred values of Delta approximately 1.7, S approximately 2.5 and (B-V)og approximately 0.92, corroborate the tendency of metal richness suggested by the spectral type G3, integrated colors Q equals 0.21 and Fe/H abundance ratio approximately 0.6.
CM diagram
TagsNGC 6388

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