Eggen PV photometry in NGC 7492 (Cuffey, 1961)

Details Eggen PV photometry in NGC 7492 (Cuffey, 1961) Eggen PV photometry in NGC 7492 (Cuffey, 1961)

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ycat..71220363c&link_type=abstract

VizieR On-line Data Catalog: J/MNRAS/122/363. Originally published in: 1961MNRAS.122..363C

Physics

Clusters: Globular, Photometry: Eggen

Scientific paper

Photometry of NGC 7492, a very faint, well resolved cluster, shows that it has a colour-magnitude relation similar in form to that of a typical globular cluster. A well defined but sparsely populated red giant branch is present, along with a horizontal branch, blue stars, and variables. The distance modulus, 17.17, and the distance 27.2kpc., are obtained. The colour excess appears to be negligible. The integrated photographic absolute magnitude is -4.84. The star density in the cluster is unusually low, being approximately 0.06 stars per cubic parsec for stars brighter than +2.5 absolute magnitude. For a description of the PV photometric system, see e.g. (2 data files).

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