Infrared Properties of a Large Ring Around the LBV G79.29+0.46 |
| |
Authors: | HJ Wendker K Molthagen A Heske LA Higgs TL Landecker |
| |
Institution: | (1) Hamburger Sternwarte Gojenbergsweg 112, D-21029 Hamburg, Germany;(2) Astrophysics Division, Space Science Department of ESA, Villafranca, ISO Science Operations Centre, P.O. Box 50727, 28080 Madrid, Spain;(3) Dominion Radio Astrophysical Observatory, Penticton, B.C., Canada |
| |
Abstract: | G79.29+0.46 seems to be an unique object. Discovered as a nearly perfect ring in the radio continuum all subsequent observations are consistent with the interpretation that it is a large ring nebula (4′) around an heavily reddened LBV. Our ISOPHOT and LWS observations on board of ISO show that an infrared ring coincides with the radio ring. Line emission does not contaminate the continuum images. The resulting dust temperature of > 70 K) is unusually high. The LWS spectra of the 52 and 88 µm OIII], 63 µm OI], 122 µm NII] and 158 µm CII] lines are discussed. No cool neutral gas is found near the ring. A quantitative interpretation has to await modelling of the rather complicated background. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|