Abstract
Doppler redshifts of a sample of Mg II associated absorbers of SDSS DR7 quasars are analysed. We find that there might be three Gaussian components in the distribution of the Doppler redshift. The first Gaussian component, with the peak being located at z Dopp = − 0.0074, probably arises from absorbers with outflow histories observed in the direction close to jets of quasars. The second Gaussian component, with the peak being located at z Dopp = − 0.0017, possibly arises from absorbers with outflow histories observed in the direction far away from jets of quasars. Whereas, the third Gaussian component, with the peak being located at z Dopp = − 0.0004, might arise from the random motion of absorbers with respect to quasars.
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Acknowledgements
The authors would like to thank the anonymous referee for helpful comments and suggestions. This work was supported by the National Natural Science Foundation of China (No. 11363001, No. 11073007), the Guangxi Natural Science Foundation (2012jjAA10090), the Guangzhou Technological Project (No.11C62010685), and the Guangxi University of Science and Technology research projects (No. 2013LX155).
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Pan, CJ., Chen, ZF. Distribution of Doppler Redshifts of Associated Absorbers of SDSS Quasars. J Astrophys Astron 34, 357–372 (2013). https://doi.org/10.1007/s12036-013-9189-1
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DOI: https://doi.org/10.1007/s12036-013-9189-1