期刊
ASTROPHYSICAL JOURNAL
卷 713, 期 1, 页码 429-439出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/713/1/429
关键词
circumstellar matter; dust, extinction; ISM: individual objects (G79.29+0.46); ISM: lines and bands; stars: evolution; stars: mass-loss
资金
- Spanish MICINN [CSD2006-00070]
Aiming to perform a study of the warm dust and gas in the luminous blue variable star G79.29+0.46 and its associated nebula, we present infrared Spitzer imaging and spectroscopy, and new CO J = 2 -> 1 and 4 -> 3 maps obtained with the IRAM 30 m radio telescope and the Submillimeter Telescope, respectively. We have analyzed the nebula detecting multiple shells of dust and gas connected to the star. Using Infrared Spectrograph-Spitzer spectra, we have compared the properties of the central object, the nebula, and their surroundings. These spectra show a rich variety of solid-state features (amorphous silicates, polycyclic aromatic hydrocarbons, and CO2 ices) and narrow emission lines, superimposed on a thermal continuum. We have also analyzed the physical conditions of the nebula, which point to the existence of a photo-dissociation region.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据