Table 1
Polarization parameters of standard stars monitored by RoboPol, as reported in the literature.
| Source | RA | Dec | Band | PD (%) | EVPA (°) | References |
|---|---|---|---|---|---|---|
| polarized | ||||||
| BD+57.2615 | 22:47:49.6 | +58:08:50 | R | 2.02 ± 0.05 | 41.0 ± 1.0 | Whittet et al. (1992) |
| BD+59.389(c) | 02:02:42.1 | +60:15:26 | R | 6.430 ± 0.022 | 98.14 ± 0.10 | Schmidt et al. (1992) |
| BD+64.106 | 00:57:36.7 | +64:51:35 | R | 5.150 ± 0.098 | 96.74± 0.54 | Schmidt et al. (1992) |
| CMaR1 24 | 07:04:47.4 | −10:56:18 | R | 3.18 ± 0.09 | 86.0±1.0 | Whittet et al. (1992) |
| CygOB2 14 | 20:32:16.6 | +41:25:36 | R | 3.13 ± 0.05 | 86.0±1.0 | Whittet et al. (1992) |
 |
16:21:57.7 | −24:29:44 | R | 1.59 ± 0.03 | 174.0 ± 1.0(*) | Whittet et al. (1992) |
| –″– | –″– | R | 1.81 | 176.0 | Carrasco et al. (1973) | |
| HD147343 | 16:22:19.9 | −24:21:48 | R | 0.43 ± 0.05 | 151.0 ± 3.0 | Whittet et al. (1992) |
| HD150193 | 16:40:17.9 | −23:53:45 | R | 5.19 ± 0.05 | 56.0±1.0 | Whittet et al. (1992) |
 |
17:05:32.3 | −00:53:31 | R | 3.683 ± 0.072 | 88.91 ± 0.56 | Schmidt et al. (1992) |
| –″– | −″− | R | 3.63 ± 0.01 | 90.0 ± 0.1(*) | Hsu & Breger (1982) | |
| HD155197(c) | 17:10:15.8 | −04:50:04 | R | 4.274 ± 0.027 | 102.88 ± 0.18 | Schmidt et al. (1992) |
| HD161056 | 17:43:47.0 | −07:04:47 | R | 4.012 ± 0.032 | 67.33 ± 0.23 | Schmidt et al. (1992) |
 |
19:27:26.6 | +18:17:45 | R | 5.90 ± 0.05 | 179.2 ± 0.2(*) | Hsu & Breger (1982) |
| —″— | −″− | R | 5.7 ± 0.04 | 178.0±1.0 | Bailey & Hough (1982) | |
 |
21:28:57.8 | +58:44:23 | R | 4.893 ± 0.029 | 59.10 ± 0.17(*) | Schmidt et al. (1992) |
| —″— | −″− | R | 4.86 ± 0.05 | 60.0±1.0 | Bailey & Hough (1982) | |
| −″− | −″− | R | 4.99 ± 0.05 | 59.9 ± 0.1 | Hsu & Breger (1982) | |
| HD215806 | 22:46:40.2 | +58:17:44 | R | 1.83 ± 0.04 | 66.0±1.0 | Whittet et al. (1992) |
| HD236633 | 01:09:12.3 | +60:37:41 | R | 5.376 ± 0.028 | 93.04 ± 0.15 | Schmidt et al. (1992) |
| Hiltner960(a) | 20:23:28.5 | +39:20:59 | R | 5.210 ± 0.029 | 54.54 ± 0.16 | Schmidt et al. (1992) |
 |
20:32:41.0 | +41:14:29 | R | 7.97 ± 0.05 | 117.0 ± 1.0 | Whittet et al. (1992) |
| —″— | −″− | R | 7.893 ± 0.037 | 116.23 ± 0.14(*) | Schmidt et al. (1992) | |
| —″— | −″− | R | 7.18 ± 0.04 | 117.0 ± 1.0 | Hsu & Breger (1982) | |
| unpolarized | ||||||
| BD+28.4211 | 21:51:11.0 | +28:51:50 | V | 0.054 ± 0.027 | 54.22 | Schmidt et al. (1992) |
| BD+32.3739(c) | 20:12:02.1 | +32:47:44 | V | 0.025 ± 0.017 | 35.79 | Schmidt et al. (1992) |
| BD+33.2642 | 15:51:59.9 | +32:56:54 | R | 0.20 ± 0.15 | 78 ± 20 | Skalidis et al. (2018) |
| BD+40.2704 | 13:54:07.2 | +39:37:59 | ? | 0.07 ± 0.02 | 57 ± 9 | Berdyugin & Teerikorpi (2002) |
| G191B2B | 05:05:30.6 | +52:49:52 | V | 0.061 ± 0.038 | 147.65 | Schmidt et al. (1992) |
| HD14069 | 02:16:45.2 | +07:41:11 | V | 0.022 ± 0.019 | 156.57 | Schmidt et al. (1992) |
| HD154892 | 17:07:41.3 | +15:12:38 | B | 0.05 ± 0.03 | – | Turnshek et al. (1990) |
| HD212311(c) | 22:21:58.6 | +56:31:53 | V | 0.034 ± 0.021 | 50.99 | Schmidt et al. (1992) |
| HD21447 | 03:30:00.2 | +55:27:07 | V | 0.051 ± 0.020 | 171.49 | Schmidt et al. (1992) |
| HD94851 | 10:56:44.3 | —20:39:53 | B | 0.057 ± 0.018 | – | Turnshek et al. (1990) |
| WD2149+021 | 21:52:25.4 | +02:23:20 | R | 0.050 ± 0.006 | −63 ± 3 | Cikota et al. (2017) |
Notes. (a)Possibly variable You et al. (2017); (b)variable in RoboPol data and/or in Hsu & Breger (1982); Dolan & Tapia (1986); (c)possibly variable Breus et al. (2021). For stars with multiple literature values, (*)flags the value used for the EVPA zero point calibration in Sect. 3.1.
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