Shen：创建页面，内容为“*NaI doublet at λλ5890,5896Å reso- nant lines in the rest-frame optical galaxy spectra. This radiative transition arises from the neutral sodium atoms at temperat...”

2017-10-25T12:56:19Z

创建页面，内容为“*NaI doublet at λλ5890,5896Å reso- nant lines in the rest-frame optical galaxy spectra. This radiative transition arises from the neutral sodium atoms at temperat...”

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*NaI doublet at λλ5890,5896Å reso- nant lines in the rest-frame optical galaxy spectra. This radiative transition arises from the neutral sodium atoms at temperatures T < 1000K. The transitionwhich gives rise to the doublet is from the ground-state configuration 3s to the energy levels of the 3p configuration composed by two stateswith total angularmomen- tum j=3/2 and j=1/2 (spin-orbit effect). The continuum photons emitted by the stellar component are absorbed by the NaI atoms and are re-emittedwhen the electrons in the 3p configuration de- cay spontaneously to the ground-state. As a resonant line, the NaI doublet can be observed both in absorption and in emission.

*星系光谱中可见，在去除恒星的贡献之后，还trace中性的ISM，参见[http://arxiv.org/abs/1710.08423v1]

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Shen：​创建页面，内容为“*NaI doublet at λλ5890,5896Å reso- nant lines in the rest-frame optical galaxy spectra. This radiative transition arises from the neutral sodium atoms at temperat...”

Shen：创建页面，内容为“*NaI doublet at λλ5890,5896Å reso- nant lines in the rest-frame optical galaxy spectra. This radiative transition arises from the neutral sodium atoms at temperat...”