Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...233..153t&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 233, no. 1, July 1990, p. 153-158. Research supported by ASTRON.
Astronomy and Astrophysics
Astrophysics
35
Carbon Monoxide, Emission Spectra, Infrared Radiation, Stellar Envelopes, Supergiant Stars, Asymptotic Giant Branch Stars, F Stars, Missing Mass (Astrophysics), Stellar Luminosity, Velocity Distribution
Scientific paper
The detection of CO (J = 1-0) emission from the remarkable F-supergiant HD 101584 is reported. The CO emission profile shows five distinct peaks at -130, -40, +2, +46 and +130 km/s relative to its center. The peaks at -130 and +130 km/s are at one of the highest velocities observed in CO for any star. The high velocity peaks are due to either a shell which is larger than the beamsize of the telescope or due to mass ejection in two diametrically oriented jets. New high-resolution optical data show that the star has a variable mass loss rate and is presently in a phase of very high mass loss. Evidence is presented that HD 101584 is a Post-AGB star about 1000 solar luminosities.
Lamers Henny J. G. L. M.
Trams Norman. R.
van der Veen E. C. J. W.
Waelkens Christoffel
Waters Laurens B. F. M.
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