Can you check the spelling and grammar in the following text？Q11 G3 Grier2016Quasar SDSS J09142572+5048549 zem=2341 This quasar was first reported by Grier et al 2016 We adopted it’s three-epoch SDSS

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Q11 G3 Grier 2016

Quasar SDSS J091425.72+504854.9 (zem=2.341). This quasar was first reported by Grier et al. (2016). We adopted its three-epoch SDSS observations respectively on MJD=52247, 56326, and 56991. We detected four broad absorption systems (systems A to D) in C IV from all of the three spectra, of which only system D was also shown in Si IV. The CIV BAL in system A presented a velocity shift of v_shift≈754 km s−1 between the first two epoch observations, and that of v_shift≈-68 km s−1 between the last two epoch observations.

Q12 335 Joshi 2019, LL

Quasar SDSS J092345.19+512710.1 (zem=2.173). This quasar was first reported by Joshi et al. (2019). We adopted its three-epoch SDSS observations respectively on MJD=52252, 56607, and 57046. We detected two broad absorption systems (systems A and B) in C IV from all of the three spectra, of which system A was also shown in Si IV. The CIV and Si IV BALs in system A respectively presented a velocity shift of v_shift≈1377 km s−1 and v_shift≈1721 km s−1 between the first two epoch observations, and a velocity shift of v_shift≈344 km s−1 and v_shift≈137 km s−1 between the last two epoch observations.

Joshi et al. (2019) also detected these two BAL absorption systems in this quasar, and also found the deceleration in C IV and Si IV ions of system A from MJD 52252 to MJD 57046, while found no change in the velocity of system B. In LL2019 [Probing], we find that the C IV BAL in system B in this quasar can be resolved into NALs which show a sequence of line-locking signatures. These line-locking signatures imply that the actual deceleration of the outflow clouds driven by the radiation pressure is a possible cause for the velocity shift of system A.

Q13 371

Quasar SDSS J093552.97+495314.3 (zem=1.93). We adopted its two-epoch SDSS observations respectively on MJD=52641 and 55998. We detected three broad absorption systems (systems A to C) in C IV from both two-epoch spectra, of which only system C was also shown in Si IV. The CIV BAL in system A and system B respectively presented a velocity shift of v_shift≈-1905 km s−1 and v_shift≈-479 km s−1 between the two-epoch observations. In addition, we found that system C showed coordinated variability over large velocity intervals, and variable C IV/Si IV BALs, which offer evidence for the IC driven BAL variation.

Q14 380

Quasar SDSS J093846.82+302418.5 (zem=2.465). We adopted its two-epoch SDSS observations respectively on MJD=53415 and 56309. We detected two broad absorption systems (systems A and B) in C IV from both two-epoch spectra. This CIV BAL presented a velocity shift of v_shift≈-275 km s−1 between the two-epoch observations.

Q15 435

Quasar SDSS J095858.14+362318.9 (zem=2.671). We adopted its three-epoch SDSS observations respectively on MJD=52998, 55616, and 57450. We detected two broad absorption systems (systems A and B) in C IV and Si IV from all of the three spectra. The CIV BAL in system A presented a velocity shift of v_shift≈-206 km s−1 between the first two epoch observations, and that of v_shift≈-137 km s−1 between the last two epoch observations.

In addition, we found that: (1) the C IV absorption lines in both systems A and B showed coordinated variability over large velocity intervals, and (2) the C IV BALs show coordinated variable between systems A and B in the last two epochs. The above two discoveries offer evidence for the IC driven BAL variation.

Q16 528

Quasar SDSS J103641.48+184531.1 (zem=2.053). We adopted its two-epoch SDSS observations respectively on MJD=54175 and 56036. We detected two broad absorption systems (system A and B) in C IV from both two-epoch spectra, and system B was also shown in Si IV. The part of the CIV BAL in system A, system A2, presented a velocity shift of v_shift≈-481 km s−1 between the two-epoch observations.

Q17 650

Quasar SDSS J113048.45+225206.6 (zem=2.37). We adopted its two-epoch SDSS observations respectively on MJD=54178 and 56274. We detected one broad absorption system (system A) in C IV from both two-epoch spectra, and the system was also shown in Si IV.

Traditionally, C-A1 to C-A4 usually taken as a single BAL. However, in this source, it is evident that the EW variations and velocity shifts of the absorption lines only occur in the higher velocity portion (which we mark as A1 and A2). Therefore, we divide this BAL into four sub-components (namely A1, A2, A3, and A4) for further analysis. The systems A2, A3, and A4 were also presented in Si IV ion.

The CIV BALs in systems A1 and A2 respectively presented a velocity shift of v_shift≈482 km s−1 and v_shift≈334 km s−1 between the two-epoch observations. The Si IV BALs in systems A1 and A2 respectively presented a velocity shift of v_shift≈334 km s−1 and v_shift≈334 km s−1 between the two-epoch observations.

Q18 730

Quasar SDSS J115723.81+661416.0 (zem=2.216). We adopted its two-epoch SDSS observations respectively on MJD=52316 and 56667. We detected one broad absorption system (system A) in C IV from both two-epoch spectra. This CIV BAL presented a velocity shift of v_shift≈-686 km s−1 between the two-epoch observations.

Q19 764 LL2019

Quasar SDSS J120819.29