Polarimetric observations of comet 67P/Churyumov-Gerasimenko during its 2008–2009 apparition

E. Hadamcik; A. K. Sen; A. C. Levasseur-Regourd; R. Gupta; J. Lasue

doi:10.1051/0004-6361/201014167

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Volume 517 (July 2010)

A&A, 517 (2010) A86

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Table 2:

Standard stars^b.
	Star	P( $\%$ )	PA ( $^{\circ }$ )	$P_{\rm obs}$ ( $^{\circ }$ )	PA $_{\rm obs}$ ( $^{\circ }$ )	$\theta$ ₀ ( $^{\circ }$ )
IGO	GD319	0.09 $\pm$ 0.09	140	0.6 $\pm$ 0.3	113	27 $\pm$ 10
December	C191B2B	0.09 $\pm$ 0.06	157	0.2 $\pm$ 0.1	131
2008	HD25443	5.13 $\pm$ 0.06	134	4.0 $\pm$ 0.5	111
	HD94851	0.06 $\pm$ 0.02	NA	0.2 $\pm$ 0.1	22.5
	HD251204	4.04 $\pm$ 0.07	147	2.4 $\pm$ 1.1	117
OHP	GD319	0.09 $\pm$ 0.09	140	0.06 $\pm$ 0.05	134	$-4 \ \pm \ 10$
March	HD251204	4.04 $\pm$ 0.07	147	4.4 $\pm$ 0.2	153
2009	HD155197	4.38 $\pm$ 0.03	103	4.2 $\pm$ 0.15	117
	HD155197	4.38 $\pm$ 0.03	103	3.9 $\pm$ 0.4	118
IGO	HD94851	0.06 $\pm$ 0.02	NA	0.33 $\pm$ 0.08	67	0 $\pm$ 10
April-	HD147084	4.46 $\pm$ 0.03	32	4.17 $\pm$ 0.2	42
May	HD155197	4.38 $\pm$ 0.03	103	4.57 $\pm$ 0.07	95
2009	HD155197	4.38 $\pm$ 0.03	103	4.43 $\pm$ 0.07	94

Notes. ^(b) Polarization P and position angle PA for the literature values. $P_{\rm obs}$ and PA $_{\rm obs}$ for the measurements. The chosen values for PA $_{\rm obs}$ are the closest to the expected ones. NA = not available.

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