Atmospheric thermal structure of a sample of M type giants. II

Details Atmospheric thermal structure of a sample of M type giants. II Atmospheric thermal structure of a sample of M type giants. II

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.289...15j&link_type=abstract

Astrophysics and Space Science, v. 289, Issue 1, p. 15-21 (2004).

Astronomy and Astrophysics

Astrophysics

1

Stars: M Giants, Stars: Atmospheres, Physical Parameters: Excitation Temperature

Scientific paper

We present a study of atmospheric thermal structure of nine MIIIgiants located in the zone of a star formation region in thestellar Galactic bar. Vibrational temperatures of the layers offormation of δ, π and ɛ TiO molecular bandsystems have been determined spectroscopically. These temperatureshave been associated to optical depths by use of an appropriatemodel atmospheres and in view of several T eff calibrationscales. Significant temperature gradient in the upper atmosphericlayers has been established.

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