Computer Science – Databases
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..364..237d&link_type=abstract
The Future of Photometric, Spectrophotometric and Polarimetric Standardization, ASP Conference Series, Vol. 364, Proceedings of
Computer Science
Databases
Scientific paper
Uniform, dereddened, absolute, flux density versus frequency, low-resolution spectra were constructed for stars in star clusters. Photometric and spectrophotometric observations were extracted from printed papers, catalogues, and on-line databases, for ten stars selected, on the basis of their positions, proper motion components and photometry, as members of the young open cluster IC2391. The units of measurement used in the original publication were converted, where necessary, to apparent flux densities in Janskys and frequencies in Hertz. Given measured values for interstellar extinction and distances to the stars, absolute flux densities at the standard 10pc distance were readily computed from the apparent values.
Plots were prepared for each of the member stars showing the mean frequency, the bandwidth, the absolute monochromatic flux density and a total error estimation, where possible, for each observed passband. Absolute spectrophotometry for Vega from Hubble Space Telescope observations is also shown on each plot to serve as a reference. The difficulties experienced in producing the plots are discussed and ways in which these may be ameliorated are suggested.
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