Table 2.
Details of spectroscopic observations conducted of the newly discovered high-z quasars (sorted on RA).
| Quasar | Date obs. | Telescope | Instrument | Exposure time |
|---|---|---|---|---|
| ILTJ0026+2516 | 27-12-2021 | Subaru | FOCAS | 900 s |
| ILTJ0037+2410 | 14-08-2021 | Subaru | FOCAS | 600 s |
| 09-09-2021 | HET | LRS2 | 1800 s | |
| ILTJ0045+2749 | 14-08-2021 | Subaru | FOCAS | 2 × 900 s |
| ILTJ0121+2940 | 25-11-2021 | Subaru | FOCAS | 900 s |
| ILTJ0912+6658 | 25-11-2021 | Subaru | FOCAS | 600 s |
| ILTJ0922+4815 | 25-11-2021 | Subaru | FOCAS | 600 s |
| ILTJ0952+6311 | 10-11-2021 | HET | LRS2 | 1800 s |
| ILTJ1013+3518 | 02-11-2021 | HET | LRS2 | 1800 s |
| ILTJ1037+4033 | 11-11-2020 | HET | LRS2 | 3 × 1500 s |
| ILTJ1043+4048 | 25-11-2021 | Subaru | FOCAS | 300 s |
| ILTJ1054+4553 | 11-11-2021 | HET | LRS2 | 1800 s |
| ILTJ1104+6631 | 27-01-2022 | HET | LRS2 | 1800 s |
| ILTJ1133+4814 | 27-12-2021 | Subaru | FOCAS | 900 s |
| ILTJ1330+6224 | 30-12-2021 | HET | LRS2 | 1800 s |
| ILTJ1334+4750 | 28-03-2022 | HET | LRS2 | 1800 s |
| ILTJ1350+3748 | 27-04-2017 | Keck | LRIS | 2 × 600 s |
| ILTJ1401+4542 | 22-04-2022 | Keck | LRIS | 300 s |
| ILTJ1419+5718 | 30-12-2021 | HET | LRS2 | 1800 s |
| ILTJ1523+2935 | 22-04-2022 | Keck | LRIS | 300 s |
| ILTJ1601+3102 | 26-08-2021 | HET | LRS2 | 1800 s |
| ILTJ1650+5457 | 28-08-2021 | HET | LRS2 | 1500 s |
| ILTJ2201+2338 | 14-08-2021 | Subaru | FOCAS | 2 × 600 s |
| ILTJ2327+2454 | 07-05-2021 | HET | LRS2 | 1800 s |
| ILTJ2336+1842 | 27-12-2021 | Subaru | FOCAS | 900 s |
Notes. The Subaru/FOCAS observations have taken place on 14th August 2021 (half night), 25th November 2021 (half night), and 27th December 2021 (full night) under proposal ID S21B-003 (PI: Y. Harikane). The HET/LRS2 observations have been conducted in service mode using LRS2 guaranteed time and awarded time under proposal ID UT22-1-008 and UT22-2-009 (PI: G. J. Hill).
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