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H$\beta$ Line Widths as an Orientation Indicator for Low-Ionization Broad Absorption Line Quasars
Orientation Indicator Low-Ionization Absorption Line Quasars
2011/1/11
There is evidence from radio-loud quasars to suggest that the distribution of the H$\beta$ broad emission line (BEL) gas is arranged in a predominantly planar orientation, and this result may well als...
Low-ionization galaxies and evolution in a pilot survey up to z = 1
cosmology observations galaxies: evolution large scale structures evolution
2010/11/12
We present galaxy spectroscopic data on a pencil beam of 10.75′ × 7.5′ centered on the X-ray cluster RXJ0054.0-2823 at z = 0.29. We study the spectral evolution of galaxies from z = 1 down to the clus...
The nature of low-ionization microstructures in pne。
Jets and jet-like structures of low-ionization in planetary nebulae
low-ionization planetary nebulae jet-like structures
2009/6/5
Jets and jet-like structures of low-ionization in planetary nebulae。