Discrete survey of 5-cm OH emission from planetary and proto-planetary nebulae
Langue
en
Communication dans un congrès
Ce document a été publié dans
Proceedings of the International Astronomical Union, IAU Symposium, Proceedings of the International Astronomical Union, IAU Symposium, Astrophysical Masers and their Environments, 12 to 16 March 2007, 2007, Alice Springs. 2007, vol. 242, p. 344-345
Résumé en anglais
We have undertaken a comprehensive search for the first excited state of OH emission (J=5/2, 2?3/2) in Planetary and Proto- Planetary Nebulae. With the Effelsberg telescope, we confirm the detection of Vy 2?2 and we present ...Lire la suite >
Mots clés en anglais
Maser
stars: AGB and post-AGB
radio lines: stars