Volume 537, January 2012
|Number of page(s)||4|
|Published online||16 January 2012|
The narrow, inner CO ring around the magnetic Herbig Ae star HD 101412⋆
1 Department of Astronomy, University of Michigan, Ann Arbor, MI 48109-1090, USA
2 Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam, Germany
3 Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Trieste, via Tiepolo 11, 34143 Trieste, Italy
4 European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748, Garching bei München, Germany
Received: 3 December 2011
Accepted: 23 December 2011
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.
Key words: stars: individual: HD 101412 / stars: pre-main sequence / stars: magnetic field / stars: variables: general / circumstellar matter / protoplanetary disks
© ESO, 2012
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