An experimental investigation of a large-scale structure of a two-dimensional backward-facing step by using advanced multi-point LDV

2004 ◽  
Vol 36 (2) ◽  
pp. 274-281 ◽  
Author(s):  
Noriyuki Furuichi ◽  
Tadashi Hachiga ◽  
Masaya Kumada
1983 ◽  
Vol 103 ◽  
pp. 509-509
Author(s):  
I.J. Danziger ◽  
D. Baade ◽  
P. D. Atherton ◽  
K. Taylor ◽  
A. Boksenberg

From five spectrograms obtained at five different positions in the nebula, relative ionic concentrations have been derived with respect to the nucleus. They show that the degree of excitation generally decreases with distance from the nucleus. But there are also areas with locally enhanced or attenuated excitation. Taurus data, a series of two-dimensional monochromatic images centered on (OIII) λ 5007, have been used to construct a two-dimensional velocity map. It shows a large-scale structure similar to the one of direct images with the biconical pattern being at least partly present. Areas of locally lower radial velocity which seem to be inversion symmetrically distributed with respect to the centre, are also distinguished. They do not have pronounced counterparts on direct images. The cavity model suggested by Barral et al. (1982, MNRAS 199, 95) for NGC 6302 and Icke's biconical flow model (1981, Ap. J. 247, 152) are discussed.


1992 ◽  
Vol 385 ◽  
pp. 26 ◽  
Author(s):  
J. R., III Gott ◽  
Shude Mao ◽  
Changbom Park ◽  
Ofer Lahav

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