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Table 2

Sample of 23 MK standard stars observed with the INT and NOT telescopes, covering almost all the B sub-types.

Name Telescope Sp/LCMK Sp/LCBCD λ1(Å) Duv(dex) DB.l.(dex) | Duv − DB.l. |
HR 533 INT B2 V B2 V 79.4 0.162 0.149 0.013
HR 927 INT B8 V B7-8 V 54.3 0.346 0.345 0.001
HR 1122 NOT B5 III B5-6 III 36.1 0.236 0.237 0.001
HR 1399 INT B5-6 V B6 V 68.5 0.287 0.295 0.008
HR 1497 INT B3 V B7-8 V 77.0 0.294 0.297 0.003
HR 1576 INT B9 V B7 V 67.9 0.283 0.288 0.005
HR 1595 NOT B2 V B1 V 63.6 0.126 0.116 0.010
HR 1760 INT A3V >A2 74.9 0.545 0.528 0.017
HR 1808 NOT B5 V B4 V 62.1 0.260 0.248 0.012
HR 1820 NOT B2 V B3 V 60.3 0.189 0.193 0.004
HR 1860 NOT B6 V B6 V 60.5 0.317 0.301 0.016
HR 1863 NOT B2.5 V B4 V 69.0 0.222 0.210 0.012
HR 1892 NOT B1 V B0 V 61.4 0.104 0.105 0.001
HR 2010 NOT B9 IV A0-1 V 65.7 0.483 0.464 0.019
HR 2116 NOT B8 V B7-8 V 62.7 0.355 0.340 0.015
HR 2161 NOT B3 V B3 V 64.4 0.205 0.213 0.008
HR 2344 INT B2 V B3 IV 54.0 0.183 0.182 0.001
HR 2347 NOT B9 V A0 V 66.6 0.473 0.453 0.020
HR 2461 INT B8 III B7-8 IV 45.4 0.349 0.351 0.002
HR 2490 NOT B3 IV B3 IV 51.6 0.242 0.227 0.015
HR 2840 INT B6 IV B7 IV 47.7 0.336 0.351 0.015
HR 7996 INT B3 III B3-4 IV 48.9 0.270 0.252 0.018
HR 8403 INT B5 III B5 V 54.3 0.331 0.313 0.018

Notes.We present the measured BCD parameters and the comparison between the standard MK type and the obtained BCD spectral classification.

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