The narrow, inner CO ring around the magnetic Herbig Ae star, HD 101412

Abstract

We describe and model emission lines in the first overtone band of CO in the magnetic Herbig Ae star HD 101412. High-resolution CRIRES spectra reveal unusually sharp features which suggest the emission is formed in a thin disk centered at 1 AU with a width 0.32 AU or less. A wider disk will not fit the observations. Previous observations have reached similar conclusions, but the crispness of the new material brings the emitting region into sharp focus.

arXiv commentAccepted as Astronomy and Astrophysics Letter; 4 pages, 5 figures

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• The Discovery of lambda Bootis Stars -- The Southern Survey II
• Inner warm disk of ESO H$\alpha$ 279A revealed by NA I and CO overtone emission lines
• Water and OH Emission from the inner disk of a Herbig Ae/Be star
• Chemical abundances of the high-latitude Herbig Ae Star PDS2