| タイトル | Properties of the SN 1987A circumstellar ring and the distance to the Large Magellanic Cloud |
| 著者（英） | Macchetto, F.; Gilmozzi, R.; Adorf, H.-M.; Panagia, N.; Kirshner, R. P. |
| 著者所属（英） | Harvard-Smithsonian Center for Astrophysics|European Southern Observatory|Space Telescope Science Inst.|Catania Univ.|European Space Agency. European Space Research and Technology Center |
| 発行日 | 1991-10-10 |
| 言語 | eng |
| 内容記述 | The distance to SN 1987A was determined by comparing the angular size of its circumstellar ring, measured from an HST image obtained in a narrow forbidden O III 5007 A filter, with its absolute size derived from an analysis of the light curves of narrow UV lines measured with the IUE. The analysis confirms that the observed elliptical structure is a circular ring seen at a mean inclination of i = 42.8 + or - 2.6 deg and provides a determination of its absolute diameter of (1.27 + or - 0.07) x 10 to the 18th cm. Its ratio to the angular diameter of 1.66 + or - 0.03 arcsec gives an accurate determination of the distance to SN 1987A, i.e., d(1987A) = 51.2 + or - 3.1 kpc. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 91A54339 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/345349 |
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