Constraining the orbit of the possible companion to β Pictoris - New deep imaging observations

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Table 1:

Observing log of the $\beta$ Pic saturated images, and corresponding atmospheric conditions.
Set	Star	Date	Filter	DIT	NDIT	$N_{\rm exp}$	$\pi$ ¹	$\langle EC \rangle$ ²	$\langle\tau_0\rangle$ ³
				(s)		(s)	(o)	(%)	(ms)
A	$\beta$ Pic	2009-02-11	L'	0.2	150	48	-24.2/-9.1	43.4	5.0
	HR 2435	2009-02-11	L'	0.2/0.22	150	48	-24.7/-10.4	49.0	4.9
B1	$\beta$ Pic	2009-02-16	L'	0.2	150	44	-22.8/-8.4	35.7	3.2
	HR 2435	2009-02-16	L'	0.2	150	54	-22.9/-6.7	26.9	2.8
B2	$\beta$ Pic	2009-02-17	L'	0.2	150	42	-16.8/-2.4	26.8	4.4
	HR 2435	2009-02-17	L'	0.2	150	42	-16.9/-2.6	28.0	6.2
D	$\beta$ Pic	2009-01-20	$K_{\rm s}$	0.3	200	8	-30.9/-21.5	51.2	9.6
	HR 2435	2009-01-20	$K_{\rm s}$	0.3	200	10	-31.3/-18.2	44.2	8.7

¹ Range of parallactic angles at the start/end of the observation.
² The average coherent energy (K-band) as estimated on-line by AO during saturated exposures.
³ The average coherence time as estimated on-line by AO during saturated exposures.

Source LaTeX | All tables | In the text

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