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Mid-Infrared Studies of the Cool Dust Distribution in Bipolar Planetary Nebulae

Published online by Cambridge University Press:  08 August 2017

Kentaro Asano
Affiliation:
Department of Space Astronomy and Astrophysics Institute of Space and Astronautical Science (ISAS) Japan Aerospace Exploration Agency (JAXA), Sagamihara, Kanagawa 252-5210, Japan Department of Physics and Astronomy, University of Denver, Denver CO 80210, USA email: Kentaro.Asano@du.edu
Takashi Miyata
Affiliation:
Institute Astronomy, Graduate School of Science, The University of Tokyo, Mitaka, Tokyo 181-0015, Japan
Takafumi Kamizuka
Affiliation:
Institute Astronomy, Graduate School of Science, The University of Tokyo, Mitaka, Tokyo 181-0015, Japan
Toshiya Ueta
Affiliation:
Department of Physics and Astronomy, University of Denver, Denver CO 80210, USA email: Kentaro.Asano@du.edu
Corresponding
E-mail address:
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Abstract

To understand mass loss history and mass loss and dust formation history of massive AGB stars, we carried out observations of three bipolar planetary nebulae (BPNe) in 30 micron bands from a ground-based telescope. All of our targets have a compact strong emission source in the mid-infrared (MIR) around the position of the central star of planetary nebula (CSPN). These detected emissions can be originated from cool dust. Our results show that the cool dust component is compactly distributed and much more massive than previous studies indicated. These findings suggest that they experienced a strong mass loss into the equatorial direction in past.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2017 

References

Asano, K., Miyata, T., Sako, S., et al. 2012, ProcSPIE, 8446, 844634 Google Scholar
Corradi, R. L. M. & Schwarz, H. E., 1995, AAP, 293, 871 Google Scholar
Lykou, F., Chesneau, O., Lagadec, E., & Zijlstra, A. 2007, APN IV, 97 Google Scholar
Schaeidt, S. G., Morris, P. W., Salama, A., et al. 1996, AAP, 315, L55 Google Scholar
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