Paper:	The Wilson-Bappu Effect - 50 Years Later
Volume:	412, The Biggest, Baddest, Coolest Stars
Page:	251
Authors:	Stencel, R.E.
Abstract:	Wilson and Bappu (1957) published an empirical correlation between the FHWM of the emission core of the CaII K-Line at 3933A and the intrinsic luminosity among late-type dwarf, giant, and supergiant stars. Later on, Stencel (1977) extended this luminosity calibrator by using so-called wing emission lines in the wings of the H and K lines. Efforts to extend these techniques to the brightest supergiants in local group galaxies were frustrated by the limits of photographic coude’ spectra even on 4-meter telescopes at the time. With the advent of CCD spectra and S/N possible with 8-meter telescopes, we re-examine the potential for extragalactic hypergiant star distance calibration.

Astronomical Society of the Pacific
Conference Series

© Copyright 1988 - 2024 - Astronomical Society of the Pacific
No part of the material protected by this copyright may be reproduced or used in any form other than for personal use without written permission from the ASP.

Page generated in 0.046 seconds