Photography in the Washington system

Details Photography in the Washington system Photography in the Washington system

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88..461g&link_type=abstract

Astronomical Journal, vol. 88, Mar. 1983, p. 461-468.

Astronomy and Astrophysics

Astronomy

6

Astronomical Photography, Star Clusters, Stellar Spectrophotometry, Abundance, Astronomical Photometry, Electrophotometry, Faint Object Camera, Stellar Color, Stellar Temperature

Scientific paper

The applicability of photographic photometry in the Washington photometric system is established. It is found for a sample of 37 stars in the cluster NGC 6882/5 that the mean photographic and photoelectric colors differ by typically 0.02-0.03 m. While this difference precludes the use of photography to determine accurate abundances for individual stars, the accuracy becomes acceptable when several stars are averaged. Abundances derived from C-M are determined to be both more precise and in better agreement with photoelectric values than those derived from M - T1. It is shown that the effective temperature can be determined to within 150-200 K of the photoelectric value. It is concluded that solid state detectors of sufficient photometric precision will greatly improve the utility of two-dimensional Washington photometry.

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