Transient Mass-Loss Events in the PG 1159 Central Star of Longmore 4
| dc.creator | Bond, Howard E. | |
| dc.date | 2007-11-13 | |
| dc.date.accessioned | 2026-07-07T08:42:41Z | |
| dc.date.available | 2026-07-07T08:42:41Z | |
| dc.description | A spectacular, transient mass-loss event in the hydrogen-deficient central star of the planetary nebula Longmore 4 was discovered in 1992 by Werner et al. During that event, the star temporarily changed from its normal PG 1159 spectrum to that of an emission-line [WCE] star. I have been monitoring the spectrum of Lo 4 since 2003. Out of 31 spectra, two of them reveal mass-loss outbursts similar to the one seen in 1992, showing that the phenomenon recurs. I speculate on possible mechanisms for these unique outbursts, but emphasize that we still have no fully convincing explanation. | |
| dc.description | 4 pages, 2 figures; to appear in the proceedings of the Conference on Hydrogen-Deficient Stars, held in Tuebingen, Germany, Sept 17-21, 2007 | |
| dc.identifier | https://arxiv.org/abs/0711.2056 | |
| dc.identifier | http://arxiv.org/abs/0711.2056 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/142051 | |
| dc.subject | Astrophysics | |
| dc.title | Transient Mass-Loss Events in the PG 1159 Central Star of Longmore 4 | |
| dc.type | text |