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Figure 1: Stokes spectra of the Herbig Ae star HD 31648: Normalised Stokes I spectrum ( left) and Stokes V/I spectrum over the full range ( centre) and around the Ca II doublet and nearby H Balmer lines ( right). Zeeman signatures are clearly seen at the locations of the Ca II H and K and H Balmer lines. |
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Figure 2: Stokes spectra of the Herbig Ae star HD 190073: Normalised Stokes I spectrum ( left) and Stokes V/I spectrum over the full range ( centre) and around the Ca II doublet and nearby H Balmer lines ( right). The spectrum is extremely rich in emission lines demonstrating the presence of a strong stellar wind and a dense circumstellar disk. Zeeman signatures are clearly seen in the Ca II H and K lines, but they are not detectable at the locations of the H Balmer lines. |
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Figure 3:
Observed profiles of Ca II H and K in the high resolution spectrum
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