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Molecular GAS Images of Proto-Planetary Nebulae

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Post-AGB Objects as a Phase of Stellar Evolution

Part of the book series: Astrophysics and Space Science Library ((ASSL,volume 265))

Abstract

We present preliminary results from a 12C0 J=1−0 imaging survey of evolved stars which includes the PPNe: IRAS 22272+5435, HD 161796 and AFGL 2343. This survey complements the low excitation atomic gas study presented here by Fong et al. and Castro-Carrizo et al. The CO emission images of these three PPNe reveal round and detached ring structures that are expanding. These simple structures contrast with the bipolar outflows embedded in the larger envelopes of the two best studied PPNe, AFGL 618 and AFGL 2688.

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Author information

Authors and Affiliations

  1. Dept. of Astronomy, University of Illinois, MC-221, Urbana, IL, 61801, USA

    M. Meixner, D. Fong & E. C. Sutton

  2. Radio Astronomy Lab, University of California, Berkeley, CA, 94720-3411, USA

    W. J. Welch

Authors
  1. M. Meixner
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  2. D. Fong
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  3. E. C. Sutton
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  4. W. J. Welch
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Editor information

Editors and Affiliations

  1. Nicolaus Copernicus Astronomical Center, Toruń, Poland

    Ryszard Szczerba  & Sławomir K. Górny  & 

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© 2001 Springer Science+Business Media Dordrecht

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Meixner, M., Fong, D., Sutton, E.C., Welch, W.J. (2001). Molecular GAS Images of Proto-Planetary Nebulae. In: Szczerba, R., Górny, S.K. (eds) Post-AGB Objects as a Phase of Stellar Evolution. Astrophysics and Space Science Library, vol 265. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9688-6_58

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  • DOI: https://doi.org/10.1007/978-94-015-9688-6_58

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-5758-7

  • Online ISBN: 978-94-015-9688-6

  • eBook Packages: Springer Book Archive

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