Preliminary photometry in the nuclear region of NGC 6624

Details Preliminary photometry in the nuclear region of NGC 6624 Preliminary photometry in the nuclear region of NGC 6624

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...213l..49h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 213, Apr. 15, 1977, p. L49-L52.

Astronomy and Astrophysics

Astronomy

6

Astronomical Photometry, Galactic Nuclei, Globular Clusters, Binary Stars, Black Holes (Astronomy), Electrophotometers, Isophotes, Star Clusters, Ubv Spectra, X Ray Sources

Scientific paper

Results are presented for initial observations near the center of NGC 6624. Photoelectrically calibrated photographic photometry is used to discuss the characteristics of the nucleus and individual stars in its vicinity. The data in their present form are not conclusive, but could imply the presence of a closely bound group of stars near the cluster center. It is proposed that one or more of these stars may be binary systems similar to the model recently suggested for Cyg X-2. However, a massive object near the center cannot be ruled out.

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