期刊
ASTROPHYSICAL JOURNAL
卷 553, 期 1, 页码 211-218出版社
UNIV CHICAGO PRESS
DOI: 10.1086/320665
关键词
binaries : symbiotic; ISM : jets and outflows; planetary nebulae : individual (He 2-104); stars : mass loss
New Hubble Space Telescope images and Cerro Tololo Inter-American Observatory echelle spectra of the nebula around the symbiotic Mira Henize 2-104 are presented. The nebula consists of two nested hourglass-shaped structures and a collimated polar jet. Spatiokinematical modeling shows that all three outflows were ejected during approximately the same epoch, namely, about 5700 years ago, with the adopted distance of 4.4 kpc, in a mass-loss event unrelated to the present outburst. We present a tentative model in which the outer pair of lobes and jets are produced by a high-velocity outflow from the white dwarf companion to the Mira, while the inner, slowly expanding lobes are produced by the Mira wind itself.
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