Mid-IR Observations of Mira Circumstellar Environment

Details Mid-IR Observations of Mira Circumstellar Environment Mid-IR Observations of Mira Circumstellar Environment

2001-06-19

arxiv.org/abs/astro-ph/0106344v1

Astronomy and Astrophysics

Astrophysics

11 pages, 2 PostScript figures, accepted for publication in the Astrophysical Journal Letters

Scientific paper

10.1086/322737

This paper presents results from high-angular resolution mid-IR imaging of the Mira AB circumbinary environment using the MIRAC3 camera at the NASA Infrared Telescope Facility (IRTF). We resolved the dusty circumstellar envelope at 9.8, 11.7 and 18 micron around Mira A (o Ceti), and measured the size of the extended emission. Strong deviations from spherical symmetry are detected in the images of Mira AB system, including possible dust clumps in the direction of the companion (Mira B). These observations suggest that Mira B plays an active role in shaping the morphology of the circumstellar environment of Mira A as it evolves toward the Planetary Nebula phase.

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