Observations of Water--Ice in OH/IR Stars

Details Observations of Water--Ice in OH/IR Stars Observations of Water--Ice in OH/IR Stars

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..378..187j&link_type=abstract

Why Galaxies Care About AGB Stars: Their Importance as Actors and Probes. ASP Conference Series, Vol. 378, proceedings of the co

Astronomy and Astrophysics

Astronomy

Scientific paper

We have conducted a search for the water-ice band at 3 μm in a sample of O-rich AGB stars which show silicate absorption features. We derived the dust mass-loss rates by fitting the energy distribution. We also calculated the gas mass-loss rate for these objects and found it to be ˜ 10-4 M&sun; yr-1. Only about half of our sample shows evidence for water-ice absorption despite the very high mass-loss rate. The stars with water-ice show a steeper near-IR slope which might possibly be due to the presence of a disk.

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