Water vapor in the outer atmospheres of red giants probed by high-resolution, mid-infrared observations

Astronomy and Astrophysics – Astrophysics

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Stars: Individual (Alpha Boo), Stars: Agb And Post-Agb, Stars: Late-Type, Infrared: Stars

Scientific paper

Here, we report on our detection of water vapor in the mid-infrared (11-12 microns) spectrum of the K1.5 giant. Arcturus (α Boo) obtained with the high-resolution, infrared spectrograph TEXES. The detection is presented in detail in Ryde et al. 2002 ApJ. We are successful in modeling several resolved, rotational lines of water vapor and vibration-rotational (1.5-microns) and rotational lines of OH with a modified MARCS photosphere.

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