Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...388..609w&link_type=abstract
Astronomy and Astrophysics, v.388, p.609-614 (2002)
Astronomy and Astrophysics
Astrophysics
20
Hydrodynamics, Stars: Mass-Loss, Stars: Agb And Post-Agb, Stars: Individual: L$^{2
Scientific paper
Recent hydrodynamical models (Winters et al. 2000b) allow the existence of pulsating, large velocity amplitude Asymptotic Giant Branch (AGB) stars with tenuous dusty circumstellar shells, which produce low mass-loss rates and simultaneously low wind velocities. The Semi-regular long-period variable L2 Pup shows a broad SiO maser feature at 86 GHz (v=1, J=2-1), indicating an outward velocity of the material close to the stellar photosphere of at least 10 km s-1 , and narrow CO (J=2-1) and (1-0) line profiles indicating an outflow velocity of the material in the circumstellar shell of only about 3 km s-1 . This can be explained in terms of our hydrodynamical models which provide large velocities in the shocked stellar atmosphere and low velocities of the circumstellar outflow. Based on observations obtained at the European Southern Observatory, La Silla, Chile.
Bertre Th. Le
Jeong Kwang Sik
Nyman L.-AA.
Omont Alain
Winters Jan Martin
No associations
LandOfFree
The hydrodynamical structure of circumstellar envelopes around low mass-loss rate, low outflow velocity AGB stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The hydrodynamical structure of circumstellar envelopes around low mass-loss rate, low outflow velocity AGB stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The hydrodynamical structure of circumstellar envelopes around low mass-loss rate, low outflow velocity AGB stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1893141