| タイトル | C II forbidden-line 158 micron mapping in Sagittarius A Rotation curve and mass distribution in the galactic center |
| 著者（英） | Crawford, M. K.; Lugten, J. B.; Genzel, R.; Townes, C. H. |
| 著者所属（英） | California Univ. |
| 発行日 | 1986-07-15 |
| 言語 | eng |
| 内容記述 | Based on data obtained with the NASA Kuiper Airborne Observatory 91.4 cm telescope, the 158-micron fine structure line emission of C(+) is mapped near the galactic center. The strongest emission comes from a 10-pc FWHM diameter disk centered on Sgr A West whose dominant motion is rotation. Extended C(+) emission is also found from the +50 km/s galactic center molecular cloud, and a second cloud at v(LSR) of about -35 km/s. The rotation curve and mass distribution within 10 pc of the galactic center are derived, and the C(+) profiles show a drop-off of rotation velocity between 2 and 10 pc. A mass model is suggested with 2-4 million solar masses in a central point mass, and a M/L ratio of the central stellar cluster of 0.5 solar masses/solar luminosities, suggesting a large abundance of giants and relatively recent star formation in the center. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 86A48008 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/383048 |
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