Color and population gradients in globular cluster coresNew observational results on color and population gradients in the cores of several highly concentrated globular clusters are reported. The gradients are in the sense of blueing toward the cluster center, and appear to be caused mostly or entirely by population gradients in the number of blue horizontal branch and red giant branch stars. Taken at face value, such gradients would imply an inverse mass segregation, but this interpretation is not fully secure. In any case, their dynamical understanding remains a problem.
Document ID
19900055838
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Djorgovski, S. (California Institute of Technology Pasadena, United States)
Piotto, Giampaolo (California, University Berkeley; Padova, Universita, Padua, Italy)
King, Ivan R. (California, University Berkeley, United States)