Spectrum variability in HR 8752

Details Spectrum variability in HR 8752 Spectrum variability in HR 8752

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pasp...92..497b&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 92, Aug.-Sept. 1980, p. 497-500.

Astronomy and Astrophysics

Astronomy

5

Emission Spectra, H Alpha Line, Stellar Spectra, Supergiant Stars, Absorption Spectra, Photosphere, Stellar Luminosity

Scientific paper

Observations in the region of H-alpha are presented for the luminous supergiant HR 8752. Two time scales for the variation of emission features are detected. Substantial changes in H-alpha appear to take months or years. More subtle changes can occur in a matter of days. The photospheric spectrum also shows evolution on both long and short time scales as has been noted by previous observers.

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