The Onset of Photoionization in Post-AGB Stars
During the post-AGB phase the dust shell detaches from the central star and dust temperatures varies between 100 and 200 K. In order to study the onset of photo-ionization in post-AGB stars, IRSPEC near-infrared spectroscopy of 40 IRAS sources from the Point Source Catalogue was conducted. In 27 of the post-AGB observed Br gamma is detected. In
Manchado, A. et al.
Fecha de publicación:
2
2002