A Galactic Plane Survey in the CO (2-1) Line with the 60 cm Telescopes to Address Physical Condition of the Interstellar Matter
To address its temperature and density we made observations of the galactic plane in CO (2-1) line with VST1 and VST2. Using a kinetic model we estimate the volume emissivities and the line intensity ratio as a function of galactocentric radius. Using data in the first and 4th quadrants separately w...
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Veröffentlicht in: | Symposium - International Astronomical Union 2002, Vol.199, p.339-340 |
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container_title | Symposium - International Astronomical Union |
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creator | Handa, T. Hasegawa, T. Morino, J.I. Sawada, T. Sakamoto, S. Usuda, K.S. Luna, A. Bronfman, L. Hayashi, M. |
description | To address its temperature and density we made observations of the galactic plane in CO (2-1) line with VST1 and VST2. Using a kinetic model we estimate the volume emissivities and the line intensity ratio as a function of galactocentric radius. Using data in the first and 4th quadrants separately we got shallow gradient in the both quadrants; at the smaller radius is the higher in ratio. The gradient is contributed by less bright pixels in the l-v diagram, suggesting molecular gas in interarm is different along the galactocentric radius but in arm is not. |
doi_str_mv | 10.1017/S0074180900169256 |
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title | A Galactic Plane Survey in the CO (2-1) Line with the 60 cm Telescopes to Address Physical Condition of the Interstellar Matter |
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