Observations of eight globular clusters at 2.3 and 4.7 microns

Details Observations of eight globular clusters at 2.3 and 4.7 microns Observations of eight globular clusters at 2.3 and 4.7 microns

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975natur.257..568h&link_type=abstract

Nature, vol. 257, Oct. 16, 1975, p. 568, 569.

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9

Cosmic Dust, Globular Clusters, Infrared Radiation, Stellar Radiation, Emission Spectra, Galactic Radiation, Giant Stars, X Ray Sources

Scientific paper

Results are reported for IR photometric observations at 2.3 and 4.7 microns of eight globular clusters. The observations were made principally to find evidence for the presence of dust; the observed clusters were NGC 5824, 6093, 6388, 6441, 6541, 6752, 7078, and 7099. The results indicate that the central regions of NGC 6388 and 6441 were detected at 2.3 microns but probably not at 4.7 microns. It is suggested that the amplitude of the emissions may be plausibly attributed to the giant stars contained within the sampled volumes and that the observed radiation is more likely to be of stellar origin rather than due to dust. All the other clusters yielded null results with the possible exception of NGC 7078.

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