A study of newly discovered close binary open cluster candidates in the Milky Way from Gaia DR3

Open Access

Table 1

Spatial positions of the 13 newly discovered candidate CBOCs.

Pair	Name₁	RA₁ [deg]	Dec₁ [deg]	Parallax₁ [mas]	r₁ [pc]	Name₂	RA₂ [deg]	Dec₂ [deg]	Parallax₂ [mas]	r₂ [pc]
1	ADS16795	352.59	58.55	4.76±0.10	30.82±2.92	HSC976	10.00	79.32	6.04±0.46	63.79±4.81
2	ASCC100	285.40	33.60	2.75±0.09	18.35±0.44	HSC534	290.15	34.15	2.67±0.03	10.39±0.09
3	BDSB93	104.30	−8.20	0.72±0.05	17.24±0.14	HSC1740	104.92	−7.80	0.76±0.05	7.64±0.32
4	CWNU1024	104.29	−27.39	2.50±0.09	61.10±2.71	OCSN82	108.53	−35.06	2.42±0.06	29.6±0.68
5	CWNU1173	179.92	−70.29	2.24±0.08	34.80±1.66	CWNU1256	188.17	−72.30	2.12±0.04	13.88±1.34
6	CWNU2666	281.02	−11.91	0.56±0.03	6.99±0.34	HSC224	280.23	−11.80	0.55±0.03	21.35±4.03
7	HSC189	279.07	−17.00	2.01±0.04	24.62±0.67	UPK24	281.88	−11.70	1.98±0.04	40.23±1.79
8	HSC477	234.70	36.62	6.36±0.17	22.91±0.19	HSC759	225.15	59.39	10.16±0.94	73.10±0.20
9	HSC1630	89.35	0.10	6.88±1.26	71.92±0.91	HSC1644	79.40	−6.83	5.83±0.17	10.93±0.12
10	HSC1897	115.15	−21.55	1.52±0.06	24.50±1.16	HSC1911	112.70	−24.40	1.47±0.05	36.40±0.44
11	HSC2204	137.36	−50.39	0.41±0.03	11.30±5.05	OC0508	137.55	−49.79	0.39±0.04	13.49±0.96
12	HSC2468	182.23	−51.54	9.08±0.32	23.88±1.38	HSC2505	185.02	−64.10	9.35±0.19	5.48±0.17
13	HSC2571	199.17	−61.81	2.03±0.03	14.33±0.64	Platais12	207.92	−63.45	2.22±0.08	46.17±0.44

Notes. The subscripts 1 and 2 indicate the first and second sub-cluster, respectively. r₁ and r₂ mean the tidal radii of the two sub-clusters. The data are taken from HR23.

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