Measuring the Balmer Jump and Effective Gravity in FGK Stars

Abstract

It is difficult to accurately measure the effective gravity (log g) in late-type stars using broadband (eg. 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.

20 pages, 13 figures and 4 tables

References in corpus (1)

• Medium-resolution Isaac Newton Telescope library of empirical spectra - II. The stellar atmospheric parameters

Cited by in corpus (6)

• An Elemental Assay of Very, Extremely, and Ultra Metal-Poor Stars
• Exploring the Origin of Lithium, Carbon, Strontium and Barium with four new Ultra Metal-Poor Stars
• Three Ancient Halo Subgiants: Precise Parallaxes, Compositions, Ages, and Implications for Globular Clusters
• The Influence of Host Star Spectral Type on Ultra-Hot Jupiter Atmospheres
• High resolution spectroscopic follow-up of the most metal-poor candidates from SkyMapper DR1.1
• Cosmic Stillness: High Quiescent Galaxy Fractions Across Upper Mass Scales in the Early Universe to z = 7 with JWST