Open Access

Table 1.

Summary of the data.

Object Gaia EDR3 source id S/N4500 Å S/N5533 Å S/N6370 Å
2447_5952 2447968154259005952 80 108 173
4998_5552 4998741805354135552 72 83 78
6170_9904 6170808423037019904 87 88 77
6615_9776 6615661065172699776 97 161 122
6914_3008 6914409197757803008 73 86 120
J1306+4154 1527475951701753984 50 65 53
J1436+0929 1176187720407158912 134 110 91
J1553+3909 1376687518318241536 84 73 55
J1730+5309 1416077522383596160 84 63 42
J1642+2041 4564066449004092928 63 60 86
LP894-3 2891152566675457280 97 150 143

Notes. We obtained new high-resolution spectra for all objects except LP894-3. The signal-to-noise ratios are converted to per 0.01 Å.

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