Their great stellar luminosities are determined from various spectral features, which are sensitive to surface gravity, such as Hβ line widths in hot stars or a strong Balmer discontinuity in cooler stars.
Their great stellar luminosities are determined from various spectral features such as Hβ line widths in hot stars. Their great stellar luminosities are determined from various spectral features such as a strong Balmer discontinuity in cooler stars. Various spectral features are sensitive to surface gravity.