New companions in the stellar systems of DI Cha, Sz 22, CHXR 32, and Cha Hα 5 in the Chamaeleon I star-forming region

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Table 8

Projected orbital separations and linear orbital movement fit results from relative astrometric measurements.

Object	Proj.	Change in	Change
	sep.	separation	in PA^b
	[AU]	[mas/yr]^a	[°/yr]

DI Cha A(BC)^c	755	0.61 ± 3.37	0.03 ± 0.06
BC	10	−2.89 ± 0.54	−4.94 ± 0.44
AD	35	1.12 ± 1.05	2.18 ± 0.28
Sz 22 AB	85	2.47 ± 0.56	−0.07 ± 0.09
CHXR 32 A(BC)^c	401	0.30 ± 2.23	−0.01 ± 0.07
A(BC)^d	398	0.03 ± 2.79	0.03 ± 0.08
BC	14	9.69 ± 3.73	−2.58 ± 0.87
Cha Hα 5 AB	8	−0.75 ± 1.14	7.84 ± 2.97
(AB)cc1^e	(232)	−10.6 ± 1.99	−0.41 ± 0.10

Notes. in Table 5. in Table 5.

^(a)

Using a nominal pixel scale of 0.01324 arcsec/pixel to convert from pixel to mas.

^(b)

PA is measured from N over E to S.

^(c)

See

^(d)

See

^(e)

See in Table 5.

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