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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.
Hiltner960
Hiltner960
20 23 28.53 39 20 59.1 10.62
 
B0 V U: 5.459 ± 0.078
B: 5.720 ± 0.061
V: 5.663 ± 0.021
R: 5.210 ± 0.029
I: 4.455 ± 0.030
56.13 ± 0.41
55.06 ± 0.31
54.79 ± 0.11
54.54 ± 0.16
53.96 ± 0.19
5
5
5
5
5
1.
V~14 companion at 6'' NW.
Possibly variable, dP < 0.05 %.
VI Cyg #12
VI Cyg #12
20 32 40.94 41 14 26.2 11.5 B5 Ia V: 8.947 ± 0.088
R: 7.893 ± 0.037
115.03 ± 0.28
116.23 ± 0.14
-
-
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

  1. 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).

  2. Hsu, J.-C., Breger, M., 1982: On standard polarized stars, ApJ 262, 732 (ps file).

  3. Clemens, D.P., Tapia, S., 1990: Toward selection of intermediate-magnitude polarization standards, PASP 102, 179.

  4. 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.

  5. 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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