High polarisation standards
This catalogue can be loaded to the TCS by typing read-cat hpol.cat in the TCS terminal.
Name
TCSTGT |
RA (2000) |
DEC (2000) |
V |
B-V |
Sp. Type |
P (%) |
angle |
Nobs |
Ref. |
BD +64 106
BDp64106
|
00 57 36.71 |
64 51 26.5 |
10.34 |
+0.69 |
B1 V |
U: 5.110 ± 0.104
B: 5.506 ± 0.090
V: 5.687 ± 0.037
R: 5.150 ± 0.098
I: 4.696 ± 0.052 |
97.04 ± 0.58
97.15 ± 0.47
96.63 ± 0.18
96.74 ± 0.54
96.89 ± 0.32 |
2
2
2
2
2 |
1. & 4. |
BD +59 389
BDp59389
|
02 02 42.06 |
60 15 26.5 |
9.07 |
+1.01 |
F0 Ib |
U: 5.772 ± 0.051
B: 6.345 ± 0.035
V: 6.701 ± 0.015
R: 6.430 ± 0.022
I: 5.797 ± 0.023 |
98.22 ± 0.26
98.14 ± 0.16
98.09 ± 0.07
98.14 ± 0.10
98.26 ± 0.11 |
4
4
4
4
4 |
1. & 4. |
HD 19820
HD19820
|
03 14 05.35 |
59 33 47.7 |
7.11 |
+0.51 |
O9 IV |
U: 4.218 ± 0.022
B: 4.699 ± 0.036
V: 4.787 ± 0.028
R: 4.562 ± 0.025
I: 4.081 ± 0.024 |
115.57 ± 0.15
115.70 ± 0.22
114.93 ± 0.17
114.46 ± 0.16
114.48 ± 0.17 |
3
3
3
3
3 |
1. & 4. |
HD 25443
HD25443
|
04 06 08.07 |
62 06 07.0 |
6.78 |
+0.29 |
B0 III |
U: 4.930 ± 0.062
B: 5.232 ± 0.092
V: 5.127 ± 0.061
R: 4.734 ± 0.045
I: 4.249 ± 0.041 |
134.55 ± 0.36
134.28 ± 0.51
134.23 ± 0.34
133.65 ± 0.28
134.21 ± 0.28 |
1
1
1
1
1 |
1. & 4. |
BD +25 727
BDp25727
|
04 44 24.90 |
25 31 42.7 |
9.50 |
+0.72 |
A2 III |
V: 4.27 ± 0.012 |
33.8 |
1 |
4. Variable? |
HD 251204
HD251204 |
06 05 05.67 |
23 23 38.9 |
10.28 |
+0.28 |
B0 IV |
V: 4.04 ± 0.066 |
147 |
1 |
< 4. Variable? |
HD 160529
HD160529
|
17 41 58.95 |
-33 30 16.3 |
6.67 |
1.28 |
A2 Ia |
U: 6.31 ± 0.13
B: 6.97 ± 0.03
V: 7.31 ± 0.04
R: 7.04 ± 0.01
"I": 6.53 ± 0.03 |
20.3 ± 0.2
20.1 ± 0.1
20.4 ± 0.1
20.8 ± 0.1
21.3 ± 0.1 |
3
4
10
6
5 |
2. |
HD 161056
HD161056
|
17 43 47.03 |
-07 04 46.2 |
6.32 |
|
B1.5 V |
U: 3.191 ± 0.040
B: 3.799 ± 0.055
V: 4.030 ± 0.025
R: 4.012 ± 0.032
I: 3.575 ± 0.030 |
66.50 ± 0.51
66.56 ± 0.42
66.93 ± 0.18
67.33 ± 0.23
67.78 ± 0.24 |
3
3
3
3
3 |
1. |
HD 204827
HD204827
|
21 28 57.70 |
58 44 24.0 |
7.93 |
+0.82 |
B0 V |
U: 5.548 ± 0.037
B: 5.648 ± 0.022
V: 5.322 ± 0.014
R: 4.893 ± 0.029
I: 4.186 ± 0.030 |
57.57 ± 0.18
58.20 ± 0.11
58.73 ± 0.08
59.10 ± 0.17
59.94 ± 0.20 |
4
4
4
4
4 |
1. & 4. |
Finding charts from the Digital Sky Survey are obtained by clicking on the star names. These have North up and East left, are centred on the star, and the field size is 6.5 arc minutes (ALFOSC field without(!) calcite plate in the beam). The column called angle refers to the equatorial position angle, which is measured from north and eastwards.
References
- Schmidt, G.D., Elston, R., Lupie, O.L., 1992: The Hubble Space
Telescope Northern-Hemisphere Grid of Stellar Polarimetric Standards,
AJ 104, 1563 (ps file).
- Hsu, J.-C., Breger, M., 1982: On standard polarized stars,
ApJ 262, 732 (ps file).
- Clemens, D.P., Tapia, S., 1990: Toward selection of
intermediate-magnitude polarization standards, PASP 102, 179.
- Turnshek, D.A., Bohlin, R.C., Williamson, R.L.,II, Lupie, O.L., Koorneef, J., 1990: An atlas of Hubble Space Telescope photometric, spectrophotometric,and polarimetric calibration objects, AJ 99, 1243.
- Dolan, J.F., Tapia, S., 1986, Wavelength dependence of position angle in polarization standards, PASP 98,
792.
The visibility plot of today:
Minimum observing altitude when lower hatch closed: 35 degrees. 
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