The early F-type stars - Refined classification, confrontation with Stromgren photometry, and the effects of rotation

Abstract

view Abstract Citations (156) References (50) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Early F-Type Stars: Refined Classification, Confrontation with Stroemgren Photometry, and the Effects of Rotation Gray, R. O. ; Garrison, R. F. Abstract The classification for early F-type stars in the MK spectral classification system presented by Gray and Garrison (1987) is refined. The effect of rotation on spectral classification and ubvy-beta photometry of early F-type stars is examined. It is found that the classical luminosity criterion, the 4417 A/4481 A ratio gives inconsistent results. It is shown that most of the stars in the Delta Delphini class of metallic-line stars are either normal or are indistinguishable from proto-Am stars. It is suggested that the designation Delta Delphini should be dropped. The classifications are compared with Stromgren photometry. The effects of rotation on the delta-c1 index in the early-F field dwarfs is demonstrated. Publication: The Astrophysical Journal Supplement Series Pub Date: February 1989 DOI: 10.1086/191315 Bibcode: 1989ApJS...69..301G Keywords: F Stars; Stellar Composition; Stellar Rotation; Stellar Spectra; Astronomical Photometry; Hertzsprung-Russell Diagram; Metallicity; Stellar Evolution; Stellar Luminosity; Stellar Temperature; Astrophysics; PHOTOMETRY; STARS: ROTATION; STARS: SPECTRAL CLASSIFICATION full text sources ADS | data products SIMBAD (262)