A NEW HERBIG-HARO OBJECT IN THE GUM NEBULA AND ITS ASSOCIATED STAR

被引:7
作者
GRAHAM, JA
机构
关键词
NEBULAE; STELLAR WINDS; STAR FORMATION; LOW-MASS;
D O I
10.1086/132797
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Photographic and spectroscopic observations are presented of some faint nebulosity which is associated with the strong IRAS point source 08211-4158. Two components are observed. One relatively compact and knotty region has a purely gaseous spectrum characteristic of a low-excitation Herbig-Haro object while another area shows a spectrum with strong continuum radiation and superposed emission lines which suggest that it is scattering light from an embedded young star. Radial-velocity measurements show that this star is at rest with respect to its surroundings while the Herbig-Haro object has a mean velocity of -38 km s-1 with respect to its local standard of rest. The evidence favors but does not conclusively show that the source 1 in the area, identified by Campbell & Persson 1988, marks the position of the embedded star which powers the Herbig-Haro object.
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收藏
页码:79 / 84
页数:6
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