| タイトル | Nova LMC 1990 no. 2: The first extragalactic recurrent nova |
| 著者（英） | Sonneborn, George; Starrfield, Sumner G.; Shore, Steven N.; Williams, R. E.; Drechsel, H.; Cassatella, Angelo |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1990-08-01 |
| 言語 | eng |
| 内容記述 | International Ultraviolet Explorer (IUE) observations of Nova LMC (Large Magellanic Cloud) 1990 number 2 are presented. It is the first recurrent nova to be observed outside the Galaxy. Earlier optical outburst of the nova was observed in 1968, when it reached a maximum of about V = 10.2. The first observations caught the nova at UV maximum, and IUE spectra were obtained between 16 Feb. and 26 Mar. 1990, with 8 hour resolution during the first day of observations. No P Cyg profiles developed on the resonance lines, suggesting that very little mass was ejected and that the outburst was not spherical. The integrated UV luminosity was then 3.4 x 10(exp 38) erg/s which is above the Eddington limit for a one solar mass white dwarf (assuming E (B - V) = 0.15 and a distance of 55 kpc to the LMC). This is the first time that the luminosity of a recurrent nova has been directly obtained. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 91N17944 |
| 権利 | Copyright, Distribution within the U.S. granted by agreement |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/232427 |
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