Open Access
Table 1
Standard stars defining the new system.
| Star | B | RA(J2000) | Dec(J2000) | Spectral type |
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|
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| PG1348+607 | 16.04 | 13 50 15.98 | +60 24 38.4 | sdOC1VII:He40 |
| PHL 4 | 14.83 | 21 26 21.16 | +00 58 35.1 | sdO2VI:He11e |
| PG1518−098 | 13.50 | 15 20 59.34 | −09 58 55.9 | sdOC2VI:He40e |
| PG1708+602 | 13.15 | 17 09 15.90 | +60 10 10.8 | sdO2VII:He14 |
| PG1537−046 | 14.82 | 15 40 33.34 | −04 48 12.4 | sdOC2VII:He40e |
| BD+28 4211 | 10.18 | 21 51 11.05 | +28 51 50.9 | sdO2VIII:He5 |
| PG1355−064 | 12.79 | 13 57 54.34 | −06 37 31.6 | sdO2VIII:He40 |
| PG1536+690 | 14.35 | 15 36 48.83 | +68 52 08.6 | sdOC2VIII:He40 |
| PG1220−056 | 14.44 | 12 22 58.97 | −05 53 04.9 | sdO3VII:He40e |
| PG1534−018 | 14.82 | 15 37 33.80 | −02 00 21.9 | sdOC6.5VII:He40 |
| PG1543+629 | 14.60 | 15 44 38.15 | +62 43 24.3 | sdO7VII:He1 |
| PG2352+181 | 13.08 | 23 55 17.24 | +18 20 15.6 | sdO7VII:He40 |
| PG0314+146 | 12.89 | 03 17 38.05 | +14 46 25.7 | sdOC7VII:He40 |
| PG1646+607 | 16.27: | 16 46 44.30 | +60 37 09.2 | sdO7VIII:He36 |
| PG1246−122 | 14.39 | 12 49 21.67 | −12 29 32.0 | sdO8V:He19p |
| PG1017+431 | 14.82 | 10 20 29.83 | +42 50 22.0 | sdO8VI:He1 |
| PG1448−052 | 14.76 | 14 51 13.12 | −05 23 16.9 | sdO8VII:He0 |
| PG1600+171 | 16.49 | 16 03 04.10 | +16 59 54.4 | sdOC8VII:He39 |
| PG1325+054 | 14.07 | 13 28 21.40 | +05 08 55.8 | sdO8VII:He40 |
| Feige 110 | 11.51 | 23 19 58.41 | −05 09 55.8 | sdO8VIII:He5 |
| PG2120+062 | 14.20 | 21 22 31.72 | +06 21 56.2 | sdO9V:He17 |
| PG1047+003 | 13.18 | 10 50 02.86 | −00 00 35.0 | sdO9VII:He6 |
| PG1624+085 | 14.57 | 16 26 54.22 | +08 25 35.6 | sdO9VII:He39 |
| PG1127+019 | 13.01 | 11 30 03.72 | +01 37 37.6 | sdOC9VII:He40 |
| PG1653+633 | 15.78 | 16 54 22.27 | +63 15 34.8 | sdO9VIII:He10 |
| HD 160641 | 10.01 | 17 41 51.48 | −17 53 48.5 | sdOC9.5II-III:He40 |
| PG1658+273 | 15.73: | 17 00 14.23 | +27 12 37.3 | sdOC9.5VII:He39 |
| PG2151+100 | 12.46 | 21 53 57.23 | +10 17 37.7 | sdB0VII:He0 |
| PG1640+645 | 15.17: | 16 40 50.69 | +64 24 45.3 | sdB0VII:He9 |
| HZ 44 | 11.44 | 13 23 35.17 | +36 08 00.3 | sdBN0VII:He28 |
| PG0921+311 | 14.19 | 09 24 40.05 | +30 50 13.1 | sdBN0VII:He35 |
| PG2321+214 | 12.89: | 23 24 27.40 | +21 38 51.6 | sdBN0VII:He37 |
| PG1605+072 | 12.78 | 16 08 03.70 | +07 04 29.1 | sdB0.2VI:He3 |
| PG1707+657 | 15.91 | 17 07 14.28 | +65 40 25.3 | sdB0.2VII:He9 |
| PG1559+048 | 14.29 | 16 01 31.32 | +04 40 27.1 | sdBC0.2VII:He22 |
| Ton 107 | 16.55 | 12 42 01.78 | +43 40 24.4 | sdBC0.2VII:He27 |
| PG1629+466 | 14.04: | 16 31 17.75 | +46 31 00.4 | sdBN0.2VII:He29 |
| PG1559+222 | 14.50 | 16 01 13.81 | +22 05 46.5 | sdBN0.2VII:He38 |
| PG1554+408 | 15.88 | 15 55 50.40 | +40 38 53.9 | sdBN0.2VII:He39 |
| PG2148+095 | 13.00 | 21 51 16.87 | +09 46 59.7 | sdB0.5V:He2 |
| PG1619+522 | 13.08 | 16 20 38.74 | +52 06 08.8 | sdB0.5VII:He7 |
| PG1255+547 | 13.12 | 12 57 49.55 | +54 25 35.0 | sdB0.5VII:He11 |
| PG1648+315 | 15.97 | 16 50 22.03 | +31 27 49.8 | sdBC0.5VII:He28 |
| PG1452+198 | 12.03 | 14 54 39.80 | +19 37 00.9 | sdB0.5VIII:He7 |
| PG1701+359 | 13.07 | 17 03 21.67 | +35 48 48.4 | sdB1VI:He0 |
| PG1648+536 | 14.35 | 16 49 59.86 | +53 31 32.7 | sdB1VII:He0 |
| PG1532+523 | 13.83 | 15 33 29.84 | +52 06 50.0 | sdB1VII:He4 |
| PG2339+199 | 15.78: | 23 41 56.69 | +20 12 22.7 | sdBC1VII:He34 |
| PG1615+413 | 16.64: | 16 17 40.15 | +41 12 52.4 | sdBN1VII:He37 |
| PG1656+600 | 15.90: | 16 56 50.17 | +59 55 42.0 | sdB1VIII:He0 |
| PG1458+423 | 13.55 | 15 00 24.61 | +42 05 45.5 | sdB1.5VII:He0 |
| Feige 38 | 12.77 | 11 16 49.66 | +06 59 30.8 | sdB1.5VII:He3 |
| PG2337+070 | 13.29 | 23 40 04.82 | +07 17 11.0 | sdB1.5VII:He9 |
| PG1738+505 | 13.08 | 17 39 28.43 | +50 29 25.1 | sdB1.5VII:He12 |
| PG2349+002 | 13.05 | 23 51 53.26 | +00 28 18.0 | sdB2VII:He0 |
| BD−7 3477 | 10.27 | 12 44 20.21 | −08 40 15.9 | sdB2VII:He3 |
| PG1154−070 | 14.18 | 11 57 03.61 | −07 17 30.0 | sdB2VII:He5 |
| PG1743+477 | 13.41 | 17 44 26.41 | +47 41 46.3 | sdB2VII:He7 |
| PG1607+174 | 11.88 | 16 09 54.94 | +17 14 57.9 | sdB2VII:He18 |
| PG1627+006 | 14.71 | 16 29 35.90 | +00 31 49.4 | sdB2.5VII:He3e |
| PG1704+222 | 12.83 | 17 06 46.18 | +22 05 52.2 | sdB3I:He8 |
| PG2301+259 | 12.99 | 23 04 17.24 | +26 12 02.9 | sdB3IV:He5 |
| PG0229+064 | 11.50 | 02 32 36.26 | +06 38 52.2 | sdB3V:He13 |
| PG1558−007 | 13.48 | 16 01 14.04 | −00 51 41.6 | sdB3VII:He3 |
| PG2318+239 | 14.40 | 23 21 05.80 | +24 10 39.2 | sdB5III:He7 |
| PG1453−081 | 13.91 | 14 56 00.32 | −08 15 49.0 | sdB5IV:He7 |
| PG1245−042 | 13.31 | 12 48 13.94 | −04 30 47.4 | sdB7IV:He3e |
| PG2111+023 | 13.01 | 21 13 42.34 | +02 33 10.2 | sdB7V:He6 |
| PG1453−085 | 12.75 | 14 56 27.40 | −08 44 22.9 | sdB8III:He0 |
| Feige 56 | 10.92 | 12 06 47.23 | +11 40 12.7 | sdB8III:He2 |
| PG1510+635 | 14.00 | 15 11 10.29 | +63 21 49.6 | sdB8IV:He0 |
| HS2253+0900 | 13.94 | 22 55 50.94 | +09 17 01.6 | sdB8IV:He2 |
| PG0304+184 | 12.36 | 03 07 47.44 | +18 33 28.8 | sdB8V:He2 |
| Feige 98 | 11.74 | 14 38 15.77 | +27 29 33.0 | sdB9III:He1 |
| HD 14829 | 10.31 | 02 23 09.25 | −10 40 39.3 | sdA0IV:He0 |
| Feige 15 | 10.44 | 01 49 09.48 | +13 33 11.8 | sdA0IV:He1 |
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