Open Access

Table B.2.

Observation date, instrument and instrument details for the follow-up spectra obtained for a subsample of our candidates.

Index Gaia DR3 ID Date Telescope/Instr. Setup Range R
(Å)
1 1870955515858422656 2024-04-14 03:38:36 CAHA/CAFOS G-200/1.5″ Slit 4000–8500 ≈300
2 187219239343050880 2024-10-30 03:59:50 NOT/ALFOSC G-19/0.5″ Slit 4400–6950 1940
187219239343050880 2024-10-30 05:17:55 NOT/ALFOSC G-7/1″ Slit 3650-7110 650
187219239343050880 2012-02-19 12:01:14 LAMOST Low res 3700–9000 1800
187219239343050880 2014-01-29 12:16:59 LAMOST Low res 3700–9000 1800
187219239343050880 2014-10-17 19:17:55 LAMOST Low res 3700–9000 1800
187219239343050880 2024-10-29 04:05:44 NOT/FIES-L Low res 3700–8300 25000
187219239343050880 2024-10-29 04:36:32 NOT/FIES-L Low res 3700–8300 25000
187219239343050880 2024-10-30 02:52:46 NOT/FIES-L Low res 3700–8300 25000
187219239343050880 2024-10-30 03:23:33 NOT/FIES-L Low res 3700–8300 25000
3 2006088484204609408 2024-10-30 00:11:18 NOT/ALFOSC G-7/1″ Slit 3650-7110 650
2006088484204609408 2024-10-28 20:57:13 NOT/FIES-L Low res 3700–8300 25000
2006088484204609408 2024-10-28 23:05:09 NOT/FIES-L Low res 3700–8300 25000
2006088484204609408 2024-10-29 00:33:53 NOT/FIES-L Low res 3700–8300 25000
2006088484204609408 2024-10-29 21:24:41 NOT/FIES-L Low res 3700–8300 25000
2006088484204609408 2024-10-29 21:55:28 NOT/FIES-L Low res 3700–8300 25000
4 2013187240507011456 2024-04-14 03:45:35 CAHA/CAFOS G-200/1.5″ Slit 4000–8500 ≈300
5 2030965725082217088 2025-06-02 03:17:24 NOT/ALFOSC G-4/1″ Slit 3200–9600 360
6 2060841448854265216 2024-04-14 03:55:16 CAHA/CAFOS G-200/1.5″ Slit 4000–8500 ≈300
7 2061252975440642816 2024-10-29 19:52:13 NOT/ALFOSC G-19/0.5″ Slit 4400–6950 1940
2061252975440642816 2024-10-29 20:02:23 NOT/ALFOSC G-19/0.5″ Slit 4400–6950 1940
8 2074693061975359232 2024-04-13 04:06:39 CAHA/CAFOS G-200/1.5″ Slit 4000–8500 ≈300
9 2164630463117114496 2024-04-14 03:25:02 CAHA/CAFOS G-200/1.5″ Slit 4000–8500 ≈300
10 2166378312964576256 2025-06-02 02:56:27 NOT/ALFOSC G-4/1″ Slit 3200–9600 360
11 2175699216614191360 2024-10-30 00:02:17 NOT/ALFOSC G-7/1″ Slit 3650-7110 650
2175699216614191360 2025-06-02 03:03:37 NOT/ALFOSC G-4/1″ Slit 3200–9600 360
12 2200433413577635840 2024-04-14 04:10:48 CAHA/CAFOS G-200/1.5″ Slit 4000–8500 ≈300
2200433413577635840 2024-05-27 01:16:01 NOT/FIES-M Med res 3700–8300 46000
13 3355776901779440384 2024-10-29 05:46:33 NOT/FIES-L Low res 3700–8300 25000
14 3369399099232812160 2024-10-30 06:03:12 NOT/ALFOSC G-4/0.5″ Slit 3200–9600 710
3369399099232812160 2024-10-29 05:11:32 NOT/FIES-L Low res 3700–8300 25000
3369399099232812160 2024-10-29 05:27:19 NOT/FIES-L Low res 3700–8300 25000
3369399099232812160 2024-10-30 04:37:57 NOT/FIES-L Low res 3700–8300 25000
3369399099232812160 2024-10-30 04:53:44 NOT/FIES-L Low res 3700–8300 25000
15 3444168325163139840 2024-10-29 01:32:19 NOT/FIES-L Low res 3700–8300 25000
16 4076568861833452160 2024-05-27 00:37:58 NOT/FIES-M Med res 3700–8300 46000
17 428103652673049728 2024-10-30 00:27:35 NOT/ALFOSC G-7/1″ Slit 3650-7110 650
18 4299904519833646080 2024-05-26 02:21:19 NOT/FIES-M Med res 3700–8300 46000
19 461193695624775424 2024-10-29 03:50:56 NOT/FIES-L Low res 3700–8300 25000
20 473575777103322496 2024-10-30 00:38:10 NOT/ALFOSC G-7/1″ Slit 3650-7110 650
21 508419369310190976 2024-10-29 01:17:57 NOT/FIES-L Low res 3700–8300 25000
22 512721444765993472 2024-10-30 04:08:31 NOT/ALFOSC G-4/0.5″ Slit 3200–9600 710
512721444765993472 2024-10-29 22:29:36 NOT/FIES-L Low res 3700–8300 25000
512721444765993472 2024-10-29 22:40:23 NOT/FIES-L Low res 3700–8300 25000
23 526939882463713152 2024-10-30 01:39:21 NOT/ALFOSC G-4/0.5″ Slit 3200–9600 710
526939882463713152 2024-10-29 01:49:16 NOT/FIES-L Low res 3700–8300 25000
526939882463713152 2024-10-29 02:20:04 NOT/FIES-L Low res 3700–8300 25000
526939882463713152 2024-10-30 01:46:22 NOT/FIES-L Low res 3700–8300 25000
526939882463713152 2024-10-30 02:17:09 NOT/FIES-L Low res 3700–8300 25000
24 527155253604491392 2024-10-30 00:21:14 NOT/ALFOSC G-7/1″ Slit 3650-7110 650
25 6123873398383875456 2024-05-11 23:09:48 Mercator/HERMES 3770–9000 85000
6123873398383875456 2024-05-13 23:03:37 Mercator/HERMES 3770–9000 85000
26 5962956195185292288 2025-10-29 18:00:00 Lesedi/Mookodi 4″ Slit 4000–8000 ≈175

Notes. The date of observations is in format YYYY-MM-DD HH:MM:SS UT. We aimed to achieve a signal-to-noise ratio (S/N) greater than 80 for the low-resolution spectra (CAFOS, ALFOSC, and Mookodi), and an S/N above 40 for the higher-resolution spectra (FIES and HERMES).

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