Long-Term Spectral Variability of the Herbig Ae-Star HD 179218

Details Long-Term Spectral Variability of the Herbig Ae-Star HD 179218 Long-Term Spectral Variability of the Herbig Ae-Star HD 179218

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap.....47..287k&link_type=abstract

Astrophysics (English translation of Astrofizika), v. 47, Issue 3, p. 287-299 (2004).

Astronomy and Astrophysics

Astrophysics

2

Stars Variables, Individual Stars, Hd 179218, Stars Variables - Individual Stars - Hd 179218

Scientific paper

The results of high-resolution long-term spectral monitoring of Herbig Ae star HD 179218 in the region of emission H line and the sodium resonance doublet Na I D are presented. The received data show the existence of short-term variability (about 10 days) and long-term wave-like variability of equivalent width EW, intensity of circumstellar (CS) emission I and parameters of H emission profile. The analysis of these data allows us to suppose the existence of the global variability of parameters of accretion disk.

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