N<sub>2</sub>H<sup>+</sup>分子輝線の解析法を学ぶための学部生用天文教材の開発  [in Japanese] Development of Teaching Material for Undergraduate Students to Analyze the N<sub>2</sub>H<sup>+</sup> Molecular Line  [in Japanese]

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Abstract

<p>本研究では,93 GHz帯のN<sub>2</sub>H<sup>+</sup>分子輝線の解析法を学ぶための学部生用電波天文学教材の開発を行った.N<sub>2</sub>H<sup>+</sup>分子輝線は超微細構造により生じる7本の輝線からなり,星形成を引き起こす分子雲コアの研究に頻繁に用いられている.その一般的な解析には,比較的高度な計算プログラムを作成して7本の輝線のすべてをよく再現するモデルパラメータ(分子の励起温度や輝線の光学的厚さなど)を推定する方法が採られている.そのため,プログラミングに不慣れな学部生が,N<sub>2</sub>H<sup>+</sup>分子輝線の解析を行うことは容易ではない.そこで,本研究では,複雑なプログラムを作成することなしに,定規と電卓だけで解析できる簡易な教材を開発した.本論文では,開発した教材とそれを用いた教育実践の結果について報告する.</p>

<p>We have developed a new tool for teaching undergraduate students how to analyze the N<sub>2</sub>H<sup>+</sup> molecular emission line at 93 GHz. Due to its hyperfine structure, the molecular line consists of seven components, and it is commonly used to study the dense molecular cores that lead to star formation. In general, analyses of the molecular line are performed by searching for model parameters (such as the excitation temperature of the molecule and the optical depth of the line) that best fit the observed seven components, which is not an easy task for undergraduate students who are not yet familiar with computer programming. The developed teaching material is designed to be simple, and it can be used with just a ruler and calculator without need for preparing a complex computer program. In this paper, we introduce the teaching tool itself as well as the results of a practical application of the teaching material in a class conducting an astronomy experiment at Tokyo Gakugei University.</p>

Journal

  • Education of Earth Science

    Education of Earth Science 70(2), 63-77, 2017

    Japan Society of Earth Science Education

Codes

  • NII Article ID (NAID)
    130007493999
  • NII NACSIS-CAT ID (NCID)
    AN00141043
  • Text Lang
    JPN
  • ISSN
    0009-3831
  • NDL Article ID
    028703936
  • NDL Call No.
    Z15-168
  • Data Source
    NDL  J-STAGE 
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