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Thermal and hydrostatic structure of the protoplanetary nebula exposed to stellar radiation and stellar wind from the central star

Earth, Planets and Space volume 59, pages 631–643 (2007)Cite this article

An Erratum to this article was published on 13 February 2015

Abstract

A model for a nebula exposed to the radiation and stellar wind from the central star has been examined. T Tauri stars commonly have disks and stellar wind, though we have no theoretical model on nebular thermal structure under the wind. The aims of this paper are to propose a theoretical nebula model, and to perform mathematical analysis on the geometrical structure and temperature distribution of a passive nebula. Its geometrical surface is determined by the dynamical pressure of the stellar wind. The nebular surface is assumed to be a black body surface, heated by the incident stellar photon flux. We obtain temperature from the equation of energy balance between the stellar radiation upon this nebular surface and the black body radiation from it. The temperature distribution in passive disks is insensitive to the wind strength and is almost identical even if the wind strength changes by five orders of magnitude. The nebula temperature is not expressed by a simple power law function of the distance from the central star. This is an important difference between our results and those of previous works. Since the nebula surrounding a T Tauri star is influenced by stellar wind, our model may be more appropriate than any other simple single power law temperature for passive protoplanetary nebulae.

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Authors and Affiliations

  1. Department of Earth and Planetary Sciences, School of Science, Tokyo Institute of Technology, Tokyo, 152-8551, Japan

    Young Seok Yun & Kiyoshi Nakazawa

  2. Department of business management, Shumei University, Chiba, 276-0003, Japan

    Hiroyuki Emori

Authors
  1. Young Seok Yun
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  2. Hiroyuki Emori
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  3. Kiyoshi Nakazawa
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Correspondence to Young Seok Yun.

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An erratum to this article is available at http://dx.doi.org/10.5047/eps.2010.05.002.

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Yun, Y.S., Emori, H. & Nakazawa, K. Thermal and hydrostatic structure of the protoplanetary nebula exposed to stellar radiation and stellar wind from the central star. Earth Planet Sp 59, 631–643 (2007). https://doi.org/10.1186/BF03352724

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  • DOI: https://doi.org/10.1186/BF03352724

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