| タイトル | A measurement of the width and shift of the Fe I 3719.94 A line broadened by helium |
| 著者（英） | Driver, R. D.; Lombardi, G. |
| 著者所属（英） | Harvard Univ.|Harvard-Smithsonian Center for Astrophysics |
| 発行日 | 1977-08-01 |
| 言語 | eng |
| 内容記述 | Results are reported for measurements of the widths and shifts of the overlapping helium-broadened profiles of the Fe I absorption lines at 3719.94 and 3722.56 A, which were performed in a ballistic piston compressor using a saturated solution of FeCl3 in ethanol. It is found that at 4000 K, the 3719.94-A line has a gamma/n (FWHM) value of approximately 5.2 billionths rad/sec per cu cm, the blue shift of this line corresponds to a beta/n value of about 0.49 billionth rad/sec per cu cm, and the 3722.56-A line has the same values. These results are compared with previous experimental determinations and with theoretical calculations of neutral-line broadening for the Fe I lines. The significance of these measurements with respect to the solar spectrum and cool DG white dwarfs is discussed. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 77A45428 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/436808 |
|
