Open Access
Table 1.
Summary of the NIR follow-up observations.
| Quasar name | Telescope/ | Filter | Obs. date | Texp |
|---|---|---|---|---|
| Instrument | ||||
| (1) | (2) | (3) | (4) | (5) |
| PSO J016+06 | NTT/SofI | J | 2018 Dec. 23 | 5 |
| NTT/SofI | H | 2020 Nov. 18 | 15 | |
| NTT/SofI | Ks | 2020 Nov. 18 | 15 | |
| PSO J037−08 | NTT/SofI | J | 2021 July 27 | 15 |
| PSO J041+06 | NTT/SofI | J | 2020 Nov. 20 | 15 |
| PSO J062−09 | NTT/SofI | J | 2021 July 27 | 30 |
| PSO J067−14 | NTT/SofI | J | 2021 July 27 | 15 |
| NTT/SofI | H | 2023 Jan. 04 | 16 | |
| NTT/SofI | Ks | 2023 Jan. 04 | 10 | |
| PSO J162−01 | NTT/SofI | J | 2021 July 27 | 15 |
| NTT/SofI | Ks | 2019 Dec. 15 | 15 | |
| PSO J217+04 | NTT/SofI | J | 2020 Feb. 06 | 30 |
| PSO J289+50 | NOT/NOTCam | J | 2020 July 10 | 27 |
| NOT/NOTCam | Ks | 2020 July 10 | 18 | |
| PSO J335−15 | NTT/SofI | J | 2021 July 28 | 5 |
| PSO J354+21 | NOT/NOTCam | J | 2019 May 19 | 27 |
| NOT/NOTCam | Ks | 2019 May 19 | 18 |
Notes. Col (1): Quasar name. Col (2): Telescope and instrument used for the imaging follow-up. Col (3): Filter. Col (4): Observing date. Col (5): Exposure time in minutes.
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