H-alpha emission and mass loss from metal-poor giants

Details H-alpha emission and mass loss from metal-poor giants H-alpha emission and mass loss from metal-poor giants

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...264..223g&link_type=abstract

Astrophysical Journal, Part 1, vol. 264, Jan. 1, 1983, p. 223-227.

Astronomy and Astrophysics

Astrophysics

10

Giant Stars, H Alpha Line, Metallic Stars, Stellar Mass Ejection, Abundance, Emission Spectra, Globular Clusters, High Dispersion Spectrographs, Horizontal Branch Stars, Magnetohydrodynamic Turbulence, Stellar Evolution, Stellar Luminosity, Stellar Spectra

Scientific paper

H-alpha emission lines are studied by means of high dispersion spectra of about 30 metal-poor giants. No emission line has been found in stars having a luminosity less than log (L/solar-L) = 2.7, while 2/3 of the stars brighter than that show emission lines. From the data H-alpha emission seems correlated with metal abundance and microturbulence. Some implications about mass loss from these stars are briefly considered.

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