Observational studies of the Herbig Ae/Be stars. I - High-resolution H-alpha profiles

Details Observational studies of the Herbig Ae/Be stars. I - High-resolution H-alpha profiles Observational studies of the Herbig Ae/Be stars. I - High-resolution H-alpha profiles

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...218..438g&link_type=abstract

Astrophysical Journal, Part 1, vol. 218, Dec. 1, 1977, p. 438-443.

Astronomy and Astrophysics

Astrophysics

41

A Stars, B Stars, H Alpha Line, Line Shape, Stellar Spectra, Emission Spectra, High Resolution, Spectral Resolution, Stellar Models

Scientific paper

High-resolution H-alpha emission-line profiles are presented for 14 of the Herbig Ae/Be stars, generally considered to be pre-main-sequence objects. Very diverse profile structures are exhibited, including simple emission lines, double-peaked lines, and variations of the P Cygni profile. Despite the small sample, some systematic velocity trends are indicated. The observations are compared with theoretical models in the literature; models including rotation seem necessary, and the infall-rotation model recently proposed for T Tauri stars by Ulrich (1976) may have applicability.

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