| Issue |
EAS Publications Series
Volume 71-72, 2015
The Physics of Evolved Stars: A Conference Dedicated to the Memory of Olivier Chesneau
|
|
|---|---|---|
| Page(s) | 249 - 250 | |
| Section | Circumstellar Environments | |
| DOI | https://doi.org/10.1051/eas/1571055 | |
| Published online | 01 December 2015 | |
The Physics of Evolved Stars: A Conference Dedicated to the Memory of Olivier Chesneau
E. Lagadec, F. Millour and T. Lanz (eds)
EAS Publications Series, 71–72 (2015) 249-250
E. Lagadec, F. Millour and T. Lanz (eds)
EAS Publications Series, 71–72 (2015) 249-250
The MOLspheres of Mira Variables
1 NOAO, PO Box 26732, Tucson, AZ 85726, USA
2 Univ. of Vienna, Depart. of Astrophysics, Türkenschanzstrasse 17, 1180 Vienna, Austria
Time series of near-IR spectra are used to explore the cool molecular region between the photosphere and expanding circumstellar shell in large amplitude (Mira) AGB variables. The ∼1000 K Mira “MOLsphere” is shown to undergo large amplitude velocity changes that are aperiodic with time scales many times longer than the photospheric pulsation.
© EAS, EDP Sciences, 2015