Keywords
Emission Spectra
F Stars
H Alpha Line
K Stars
Stellar Luminosity
Stellar Spectra
Supergiant Stars
Astronomical Catalogs
Late Stars
Astrophysics
F Stars
H Alpha Line
K Stars
Stellar Luminosity
Stellar Spectra
Supergiant Stars
Astronomical Catalogs
Late Stars
Astrophysics
How to Cite
Half emission in F-K high luminosity stars. (1981). Revista Mexicana De Astronomía Y Astrofísica, 6(1), 233-235. https://astronomia.unam.mx/journals/rmxaa/article/view/1981rmxaa...6..233c
Abstract
The presence and variability of H-alpha emission in very luminous F-K supergiants is investigated, and the lower limit of MV where H-alpha begins to appear in emission is determined. Basic information on the sample of eight stars is presented, including the spectral type, MV, H-alpha activity, and the shape of the H-alpha profile. The emission is variable in intensity and shape for all the stars. The very luminous supergiant HD 217476, which is both a radio star and a binary, shows particularly great variability.Similar Articles
- Shields Gregory A., Starburst and active galactic nuclei. , Revista Mexicana de Astronomía y Astrofísica: Vol. 18 No. 1 (1989)
- Sahade J., The Wolf-rayet stars. , Revista Mexicana de Astronomía y Astrofísica: Vol. 6 No. 1 (1981)
- Raga A. C., Biro S., Canto J., Binette L., Images and line profiles from nonadiabatic jet models. , Revista Mexicana de Astronomía y Astrofísica: Vol. 22 No. 1 (1991)
- Sahade Jorge, The story of HD 47129: the massive O-type binary. , Revista Mexicana de Astronomía y Astrofísica: Vol. 19 No. 1 (1989)
- Rosado M., Georgelin Y. M., Monnet G., Optical emission from ring-shaped nebulae in the LMC , Revista Mexicana de Astronomía y Astrofísica: Vol. 6 No. 1 (1981)
- Oostra B., Batista M. G., Preliminary Results From 5 Years' Spectral Monitoring of Antares , Revista Mexicana de Astronomía y Astrofísica: Vol. 60 No. 2 (2024)
- Haro G., Post-T Tauri stars in galactic clusters. , Revista Mexicana de Astronomía y Astrofísica: Vol. 7 No. 1 (1983)
- Johnson H. L., An atlas of stellar spectra. II. , Revista Mexicana de Astronomía y Astrofísica: Vol. 4 No. 1 (1978)
- Arellano Ferro A., Parrao L., Giménez A., López Arroyo M., Sasselov D. D., Hα profile variations in Epsilon Aurigae. , Revista Mexicana de Astronomía y Astrofísica: Vol. 14 No. 1 (1987)
- Strom S. E., Recent progress in the study of young stellar objects. , Revista Mexicana de Astronomía y Astrofísica: Vol. 7 No. 1 (1983)
You may also start an advanced similarity search for this article.