The Very Slow Wind From the Pulsating Semiregular Red Giant L2 Pup

Details The Very Slow Wind From the Pulsating Semiregular Red Giant L2 Pup The Very Slow Wind From the Pulsating Semiregular Red Giant L2 Pup

2001-12-10

arxiv.org/abs/astro-ph/0112230v1

Astronomy and Astrophysics

Astrophysics

ApJ, in press

Scientific paper

10.1086/339207

We have obtained 11.7 and 17.9 micron images at the Keck I telescope of the circumstellar dust emission from L2 Pup, one of the nearest (D = 61 pc) mass-losing, pulsating, red giants that has a substantial infrared excess. We propose that the wind may be driven by the stellar pulsations with radiation pressure on dust being relatively unimportant, as described in some recent calculations. L2 Pup may serve as the prototype of this phase of stellar evolution where it could lose about 15% of its initial main sequence mass.

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