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[文献書誌] Oka, Tomoharu, Hasegawa, Tetsuo 他: "Statistical Properties of Molecular Clouds in the Galactic Center"Astrophysical Journal. 562. 348-362 (2001)
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[文献書誌] Ishii, Miki, Nagata, Tetsuya, Sato, Shuji 他: "K-Band Spectroscopy of Luminous Young Stellar Objects"Astronomical Journal. 121. 3191-3206 (2001)
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[文献書誌] Sawada, Tsuyoshi, Hasegawa, Tetsuo 他: "The Tokyo-Onsala-ESO-Cala'n Galactic CO J=2-1 Survey.I. The Galactic Center Region"Astrophysical Journal, Supplement Series. 136. 189-219 (2001)
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[文献書誌] Kohno, M., Koyama, K., Hamaguchi, K.: "Chandra Observations of High-Mass Young Stellar Objects in the Monoceros R2 Molecular Cloud"Astrophysical Journal. 567. 423-433 (2002)
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[文献書誌] Mizutani, M., Onaka, T., Shibai, H.: "Detection of highly-ionized diffuse gas in the Galactic plane"Astronomy and Astrophysics. 382. 610-623 (2002)
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[文献書誌] Ito, Takashi, Miyama, Shoken M.: "An Estimation of Upper Limit Masses of υ Andromedae Planets"Astrophysical Journal. 552. 372-379 (2001)
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[文献書誌] 観山正見: "太陽系外惑星に生命を探せ"光文社. 187 (2002)