The U, B, V photoelectric brightness profiles of NGC 362

Details The U, B, V photoelectric brightness profiles of NGC 362 The U, B, V photoelectric brightness profiles of NGC 362

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..95..393b&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 95, no. 2, Sept. 1983, p. 393-400.

Astronomy and Astrophysics

Astrophysics

3

Brightness Distribution, Electrophotometers, Globular Clusters, Red Giant Stars, Stellar Spectrophotometry, Ubv Spectra, Radiant Flux Density, Star Distribution, Stellar Luminosity

Scientific paper

The photoelectric brightness profiles in U, B, and V colors of the globular cluster NGC 362 are reported down to about 9 magnitudes below the central value, covering a radial distance of about 10 arc min. They were derived from E-W scans, with a large rectangular diaphragm, giving the integrated profile of the cluster in about 6 min. of time. The inverse problem of determining the brightness profiles from integrated luminosities is solved by means of the regularization method. The agreement with the data available in literature (photoelecric brightness measurements in the inner 80 arc sec, bright stars distribution in the range 80-330 arc sec) is generally good. The B-V and U-B radial color distributions are presented. It may seem that there is no color gradient, outside the central region dominated by red giants.

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