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Measuring the Balmer Jump and the Effective Gravity in FGK Stars

Bessell, Michael


It is difficult to accurately measure the effective gravity (log g) in late-type stars using broadband (e.g., UBV or SDSS) or intermediate-band (uvby) photometric systems, especially when the stars can cover a range of metallicities and reddenings. However, simple spectroscopic observational and data reduction techniques can yield accurate values for log g through comparison of the Balmer jumps of low-resolution spectra with recent grids of synthetic flux spectra.

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Publications of the Astronomical Society of the Pacific
DOI: 10.1086/519981


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