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Catalog of narrow absorption lines in BOSS (I): for quasars with
Zhi-Fu Chen, Yi-Ping Qin, Cai-Juan Pan +3
We have assembled absorption systems by visually identifying absorption doublets in the quasar spectra of the Baryon Oscillation Spectroscopic Survey (BOSS)…
The disappearance of a narrow Mg II absorption system in quasar SDSS J165501.31+260517.4
Zhi-Fu Chen, Yi-Ping Qin, Min-Feng Gu
In this letter, we present for the first time, the discovery of the disappearance of a narrow Mg II absorption system from the spectra of quasar SDSS J165501.31…
Disappearance of a narrow Mg II absorption system with a measured velocity up to
Zhi-Fu Chen, Yi-Ping Qin
Quasar J152645.61+193006.7 () was observed by the Sloan Digital Sky Survey (SDSS) on 2006 May 31, and again on 2011 April 9. The time interval of the SDSS two obs…
Emergences of C IV narrow absorption troughs in the quasar SDSS J095254.10+021932.8
Zhi-Fu Chen, Mu-Sheng Li, Wei-Rong Huang +2
In this paper, we report on two C IV narrow absorption systems emerging from the spectrum of the quasar SDSS J095254.10 +021932.8, which are located at and $z_…