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Herschel Planetary Nebula Survey (HerPLaNS): Construction of a Detailed Dusty Photoionization Model of NGC6781

Published online by Cambridge University Press:  08 August 2017

Masaaki Otsuka Open the ORCID record for Masaaki Otsuka [Opens in a new window] ,
Toshiya Ueta ,
You-Hua Chu ,
Kentaro Asano  and
HerPLaNS consortium
Masaaki Otsuka
Affiliation:
ASIAA, 11F of Astronomy-Mathematics Building, AS/NTU. No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C. email: otsuka@asiaa.sinica.edu.tw (MO)
Toshiya Ueta
Affiliation:
Department of Physics and Astronomy, University of Denver, 2112 E. Wesley Ave., Denver, CO 80210, USA
You-Hua Chu
Affiliation:
ASIAA, 11F of Astronomy-Mathematics Building, AS/NTU. No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C. email: otsuka@asiaa.sinica.edu.tw (MO) Department of Astronomy, University of Illinois, 1002 West Green Street, Urbana, Illinois, USA
Kentaro Asano
Affiliation:
Department of Physics and Astronomy, University of Denver, 2112 E. Wesley Ave., Denver, CO 80210, USA
Rights & Permissions [Opens in a new window]

Abstract

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As one of the follow-up studies of Herschel Planetary Nebula Survey (HerPlaNS; Ueta et al. 2014), we focus on a bipolar planetary nebula (PN) NGC6781 to characterize the dusty nebula and the central star based on our own Herschel data and the rich archival spectroscopic/photometric image data in the wavelengths from UV to far-IR. With CLOUDY, we constructed a comprehensive photoionization model of NGC6781 ever made including data from UV to radio. We succeeded to reproduce the observed spectral energy distribution (SED) and the atomic gas, H2, CO, and OH molecular line fluxes. We found that about 40% of the total dust mass would be from warm-cold dust components.

Keywords

infrared: ISMISM: abundancesdustmoleculesplanetary nebulae: individual (NGC6781)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S323: Planetary Nebulae: Multi-Wavelength Probes of Stellar and Galactic Evolution , October 2016 , pp. 348 - 349
Copyright
Copyright © International Astronomical Union 2017 

References

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