Theoretical colours and isochrones for some Hubble Space Telescope colour systems. II

Details Theoretical colours and isochrones for some Hubble Space Telescope colour systems. II Theoretical colours and isochrones for some Hubble Space Telescope colour systems. II

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.253..449p&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 253, Dec. 1, 1991, p. 449-473.

Astronomy and Astrophysics

Astronomy

8

Color-Magnitude Diagram, Faint Object Camera, Hubble Space Telescope, Ubv Spectra, Interstellar Extinction, Signal To Noise Ratios, Stellar Atmospheres, Stellar Color

Scientific paper

A grid of synthetic surface brightness magnitudes for 14 bandpasses of the Hubble Space Telescope Faint Object Camera is presented, as well as a grid of UBV, uvby, and Faint Object Camera surface brightness magnitudes derived from the Gunn-Stryker spectrophotometric atlas. The synthetic colors are used to examine the transformations between the ground-based Johnson UBV and Stromgren uvby systems and the Faint Object Camera UBV and uvby. Two new four-color systems, similar to the Stromgren system, are proposed for the determination of abundance, temperature, and surface gravity. The synthetic colors are also used to calculate color-magnitude isochrones from the list of theoretical tracks provided by VandenBerg and Bell (1990). It is shown that by using the appropriate filters it is possible to minimize the dependence of this color difference on metallicity. The effects of interstellar reddening on various Faint Object Camera colors are analyzed as well as the observational requirements for obtaining data of a given signal-to-noise for each of the 14 bandpasses.

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