Table 2.
Spectroscopic observations and properties of the newly discovered quasars.
| Quasar | Telescope/ | Obs. Date | Exp | Selection | z | z-method | m1450 | M1450 |
|---|---|---|---|---|---|---|---|---|
| Name | Instrument | Time | ||||||
| (s) | ||||||||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
| New discoveries | ||||||||
| PSO J004−35 | NTT/EFOSC2 | 2024/10/26 | 4200 | YS23 | 6.18 | template (on25) | 20.99 | −25.74 |
| PSO J011−37 | NTT/EFOSC2 | 2024/10/26 | 4200 | YS23 | 6.12 | template (xqr-30) | 20.72 | −26.01 |
| PSO J016+06 | VLT/FORS2 | 2020/11/09 | 1800 | DELS+PS1 | 6.53 | template (xqr-30) | 20.98 | −25.89 |
| PSO J017−48 | NTT/EFOSC2 | 2024/01/25 2024/10/27 | 3600 3600 | YS23 | 4.99 | template (on25) | 20.70 | −25.69 |
| MQC J021+19r | NTT/EFOSC2 | 2023/11/30 | 3600 | MQC | 4.71 | template (strong-Lyα) | 20.24 | −26.05 |
| PSO J035−18 | NTT/EFOSC2 | 2024/01/26 2024/10/27 | 3600 5400 | YS23 | 5.13 | template (weak-Lyα) | 20.41 | −26.02 |
| PSO J037−08 | Magellan/FIRE | 2018/12/31 2019/01/13 | 700 7200 | DELS+PS1 | 6.725 ± 0.002 | Mg II | 20.61 | −26.26 |
| PSO J041+06 | Gemini/GNIRS | 2019/01/12 | 8400 | DELS+PS1 | 6.321 ± 0.002 | MgII | 20.87 | −25.91 |
| PSO J060−65 | NTT/EFOSC2 | 2024/01/24 | 3600 | DVCW | 6.10 | template (xqr-30) | 20.71 | −26.01 |
| PSO J067−14 | Gemini/GNIRS | 2019/01/12 + /02/03-06-09 | 12 000 | DELS+PS1 | 6.705 ± 0.002 | Mg II | 20.89 | −25.99 |
| PSO J070−51 | NTT/EFOSC2 | 2023/12/01 | 7200 | YS23 | 5.09 | template (xqr-30) | 20.55 | −25.87 |
| PSO J075−18 | NTT/EFOSC2 | 2023/11/29 2024/10/27 | 5400 1800 | YS23 | 5.51 | template (weak-Lyα) | 20.97 | −25.58 |
| PSO J078−45 | NTT/EFOSC2 | 2023/11/30 | 3600 | YS23 | 5.08 | template (on25) | 20.86 | −25.56 |
| PSO J082−38 | NTT/EFOSC2 | 2023/11/29 | 3600 | YS23 | 5.10 | template (xqr-30) | 20.12 | −26.30 |
| PSO J091−31 | NTT/EFOSC2 | 2023/11/29 | 3600 | YS23 | 5.22 | template (strong-Lyα) | 20.41 | −26.06 |
| MQC J133−02r | NTT/EFOSC2 | 2022/12/27 | 5400 | MQC | 4.67 | template (on25) | 20.80 | −25.48 |
| PSO J143−21 | NTT/EFOSC2 | 2022/12/26 | 3600 | PS1B23 | 5.97 | template (xqr-30) | 20.55 | −26.13 |
| Magellan/LDSS3 | 2025/05/01 | 1800 | ||||||
| PSO J200−13r | NTT/EFOSC2 | 2022/02/05 | 4300 | RPS1AW | 4.71 | template (xqr-30) | 20.48 | −25.82 |
| PSO J217+04 | Magellan/FIRE | 2023/05/19 | 900 | DELS+PS1 | 6.696 ± 0.002 | Mg II | 21.11 | −25.76 |
| LBT/MODS+LUCI | 2023/06/07 + /06/13 | 7200 13800 | ||||||
| PSO J273+38 | LBT/MODS | 2023/06/10 | 1200 | PS1B23 | 5.71 | template (xqr-30) | 20.87 | −25.73 |
| PSO J289+50 | LBT/MODS | 2019/10/07 | 4800 | DELS+PS1 | 6.856 ± 0.002 | Mg II | 20.70 | −26.21 |
| Keck/NIRES | 2020/09/07 | 11 520 | ||||||
| PSO J307−47 | NTT/EFOSC2 | 2024/10/28 | 4200 | YS23 | 5.22 | template (on25) | 20.92 | −25.54 |
| Magellan/LDSS3 | 2025/05/01 | 1200 | ||||||
| PSO J311−64 | NTT/EFOSC2 | 2024/10/27 | 3600 | YS23 | 4.94 | template (xqr-30) | 21.01 | −25.37 |
| PSO J334−63 | NTT/EFOSC2 | 2024/10/27 | 5400 | YS23 | 6.08 | template (xqr-30) | 20.89 | −25.82 |
| PSO J335−15 | Magellan/FIRE | 2019/05/09 | 18 000 | PS1/AllWISE | 6.511 ± 0.001 | Mg II | 19.85 | −26.98 |
| New spectra publication | ||||||||
| PSO J062−09 | Magellan/LDSS3 | 2018/11/13 | 1200 | DELS+PS1 | 6.827 ± 0.006 | Mg II | 20.28 | −26.62 |
| PSO J127+41 | LBT/MODS | 2018/10/05 | 3600 | DELS+PS1 | 6.773 ± 0.007 | Mg II | 20.52 | −26.36 |
| PSO J129+49 | LBT/MODS | 2017/04/23 | 2040 | DELS+PS1 | 6.702 ± 0.001 | Mg II | 20.24 | −26.63 |
| PSO J162−01 | VLT/FORS2 | 2016/02/16 | 5260 | DELS+PS1 | 6.656 ± 0.001 | Mg II | 21.03 | −25.83 |
| Magellan/FIRE | 2015/03/12 | 19 508 | ||||||
| PSO J164+29 | LBT/MODS | 2019/03/18 | 7200 | DELS+PS1 | 6.585 ± 0.005 | Mg II | 21.16 | −25.68 |
| PSO J354+21 | LBT/MODS | 2020/10/23 | 1800 | DELS+PS1 | 6.565 ± 0.009 | Mg II | 21.18 | −25.66 |
Notes. Quasars sorted by right ascension. Col (1): Quasar name; the objects marked with r are radio-loud. Col (2): Telescope and instrument used for the spectroscopic follow-up. Col (3): Date of observations. Col (4): Exposure time in seconds. Col (5): Selection method as described in Sect. 2. Col (6): Redshift; the redshift for the already published quasars (second part of the table) are taken from Yang et al. (2021), except for PSO J162−01, which was directly measured from the Magellan/FIRE spectrum in this study. Col (7): Method used to compute the redshift (and in parentheses, the best template). Cols. (8) and (9): Apparent and absolute magnitude at the 1450 Å rest frame. For the objects PSO J062−09, PSO J129+49, and PSO J354+21, these quantities were taken from Fan et al. (2023).
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