| タイトル | Optical spectroscopy of HH-exciting stars from scattered light continua |
| 著者（英） | Schwartz, R. D.; Dopita, M. A.; Cohen, M. |
| 著者所属（英） | Mount Stromlo and Siding Spring Observatory|Missouri Univ.|California Univ.|NASA Ames Research Center |
| 発行日 | 1986-08-01 |
| 言語 | eng |
| 内容記述 | Optical spectra of the reflected light continua visible in parts of several Herbig-Haro objects are presented. HH 100 unmistakably scatters the chromospheric spectrum of a strong emission-line T Tau star. HH 48S also reflects a T Tau stellar spectrum, as perhaps do HH 24 and HH 55, but less convincingly. HH 55 reveals photospheric absorption features too, corresponding to an M3.5 T Tau star. The continuum in HH 120 (= CG 30 HH) is unclassifiable while that in HH 46A has dimmed considerably (by a factor of order 20) although, only 7 yr ago, it clearly reflected a strong-line T Tau spectrum. It is concluded that at least some of the stars that excite Herbig-Haro nebulae, even when those stars are not directly visible, pass through a strong-line T Tau phase, and can undergo abrupt and dramatic changes in visual luminosity. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 87A11196 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/381909 |
|
