Stellar and substellar companions of nearby stars from Gaia DR2 - Binarity from proper motion anomaly

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Volume 623 (March 2019)

A&A, 623 (2019) A72

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Table 1.

Proper motion of nearby stars from the Hip2 and GDR2 catalogs.

Name	ϖ_G2	v_r	μ_HG[H] (mas a⁻¹)		μ_H − μ_HG[H] (mas a⁻¹)		Δ_H	μ_HG[G2] (mas a⁻¹)		μ_G2 − μ_HG[G2] (mas a⁻¹)		Δ_G2	Δ	ϵ_i	𝜚

	(mas)	(km s⁻¹)	μ_α	μ_δ	μ_α	μ_δ		μ_α	μ_δ	μ_α	μ_δ			(mas)
Proxima	768.529_0.220		−3779.090_0.046	+765.519_0.065	+3.34_1.63	+0.02_2.01	1.3	−3781.629_0.048	+769.421_0.052	+0.22_0.11	+0.38_0.21	1.8		0.34	1.0
Barnard star	547.480_0.314	−110.40_0.30^a	−798.937_0.035	+10330.695_0.037	+0.36_1.72	−2.58_1.22	1.2	−801.413_0.040	+10361.664_0.040	−1.34_0.69	+0.79_0.39	2.0		0.14	1.1
Ross 154	336.152_0.072	−10.41_0.30^a	+639.381_0.050	−193.866_0.048	−2.36_2.80	+2.23_1.70	1.0	+639.499_0.051	−193.878_0.045	−0.15_0.15	+0.22_0.13	1.4		0.14	1.0
eps Eri	312.248_0.505	16.20_0.30^a	−975.327_0.013	+19.964_0.013	+0.16_0.21	−0.47_0.20	1.7	−975.082_0.013	+19.978_0.013	−0.23_0.61	+0.29_0.60	0.4		1.36	0.9
HD 217987	304.248_0.053	8.79_0.30^a	+6767.535_0.017	+1326.511_0.021	+0.67_0.59	+1.01_0.68	1.3	+6765.878_0.018	+1330.225_0.021	+0.18_0.09	+0.03_0.09	1.4		0.00	1.0
Ross 128	296.336_0.078	−30.99_0.30^a	+607.045_0.078	−1222.424_0.070	−1.78_2.32	+3.14_1.97	1.2	+607.321_0.076	−1222.981_0.047	+0.40_0.17	−0.22_0.10	2.3	°	0.19	1.0
61 Cyg B	286.175_0.067	−64.04_0.30^a	+4103.596_0.014	+3149.652_0.013	+3.30_0.32	−4.97_0.44	11.0	+4108.549_0.013	+3150.925_0.015	−2.73_0.11	+4.69_0.12	34.0	⋆	0.30	1.0
61 Cyg A	285.975_0.111	−65.73_0.30^a	+4156.698_0.236	+3252.805_0.218	+11.61_6.57	+16.39_12.08	1.5	+4161.853_0.225	+3254.206_0.230	+2.36_0.31	−4.36_0.36	10.5	⋆	0.46	0.8
HD 173739	283.978_0.071	−0.82_0.30^a	−1310.882_0.070	+1795.416_0.077	−21.15_2.23	+12.06_2.75	6.9	−1311.369_0.065	+1795.092_0.089	−0.44_0.21	−3.01_0.25	9.2	⋆	0.00	1.1
HD 173740	283.891_0.117	1.23_0.30^a	−1400.171_0.102	+1858.954_0.124	+61.49_3.29	−49.80_4.06	15.1	−1400.669_0.089	+1858.528_0.136	+0.75_0.36	+3.77_0.44	6.8	⋆	0.15	1.2
GJ 15 A	280.719_0.051	11.81_0.30^a	+2890.548_0.020	+412.262_0.013	−1.63_0.60	−2.16_0.48	3.5	+2890.209_0.020	+411.245_0.015	+1.28_0.08	+0.55_0.06	14.0	⋆	0.00	0.9
tau Cet	277.545_0.559	−16.75_0.30^a	−1721.610_0.017	+854.509_0.017	+0.56_0.18	−0.35_0.15	2.8	−1721.958_0.017	+854.806_0.017	−7.70_1.42	+0.62_0.85	4.7	•	1.68	1.1
eps Ind	274.834_0.270	−40.10_0.30^b	+3960.985_0.008	−2538.753_0.010	−0.06_0.24	−0.48_0.17	1.6	+3964.958_0.009	−2537.320_0.011	+2.12_0.41	+1.42_0.45	4.2	•	1.18	1.2
YZ Cet	269.392_0.087	28.21_0.30^a	+1205.210_0.153	+637.846_0.187	+3.32_5.57	+2.88_3.71	0.7	+1204.728_0.196	+637.658_0.181	+0.52_0.27	+0.02_0.23	1.5		0.26	1.2
Kapteyn star	254.255_0.035	245.22_0.30^a	+6507.242_0.024	−5731.700_0.027	−2.16_0.98	+0.86_0.96	1.7	+6491.492_0.024	−5709.016_0.027	+0.10_0.07	−0.14_0.07	1.7		0.00	1.1
AX Mic	251.858_0.064	20.08_0.10^c	−3259.437_0.020	−1147.107_0.021	−0.85_0.92	+0.89_0.40	1.2	−3258.974_0.016	−1145.813_0.021	+0.44_0.12	+0.27_0.10	3.4	•	0.00	0.9
Ross 614	242.995_0.954	16.75_0.20^d	+724.650_0.097	−673.608_0.079	−19.37_2.66	+61.69_2.40	18.0	+724.506_0.090	−673.469_0.070	+25.68_1.78	−129.38_1.59	55.1	⋆	3.70	11.9
BD-12 4523	232.238_0.071	−21.20_0.30^a	−94.195_0.048	−1183.523_0.050	−0.61_2.30	+0.09_1.74	0.2	−94.221_0.045	−1183.812_0.043	+0.20_0.15	−0.01_0.10	1.1		0.12	1.1
Wolf 28	231.766_0.046		+1231.412_0.160	−2711.868_0.108	+5.49_5.26	+2.68_3.18	1.0	+1231.163_0.157	−2711.417_0.132	+0.19_0.18	−0.51_0.15	2.3	°	0.00	1.2
HD 225213	230.162_0.068	25.53_0.30^b	+5633.905_0.019	−2338.235_0.024	+0.78_0.86	+0.53_0.71	0.8	+5633.447_0.024	−2334.707_0.021	+0.01_0.19	−0.20_0.09	0.9		0.00	1.2
CD-46 11540	219.830_0.057	−2.90_0.30^b	+572.459_0.040	−880.484_0.031	−1.20_1.77	−0.35_0.74	0.7	+572.540_0.041	−880.471_0.036	−0.02_0.12	+0.15_0.09	1.0		0.00	1.0
BD+68 946	219.810_0.041	−28.79_0.30^a	−320.766_0.027	−1269.513_0.042	+0.20_1.14	+0.18_1.39	0.1	−320.746_0.029	−1269.942_0.042	+0.24_0.10	+0.34_0.10	3.1	•	0.08	1.2
LAWD 37	215.766_0.041	0.00_50.00^e	+2661.823_0.057	−346.882_0.073	+2.09_2.21	−0.50_2.07	0.7	+2662.054_0.062	−345.108_0.065	−0.52_0.09	+0.38_0.09	5.0	•	0.00	1.0
BD-15 6290	213.896_0.085	−1.59_0.30^b	+957.891_0.052	−673.629_0.045	+1.95_3.36	−1.70_1.68	0.7	+957.926_0.048	−673.613_0.038	+0.08_0.14	−0.16_0.12	0.9		0.20	1.1
HD 88230	205.421_0.042	−25.74_0.30^a	−1363.047_0.008	−505.336_0.011	+0.73_0.43	+0.82_0.32	2.0	−1363.309_0.008	−505.724_0.013	+0.02_0.07	+0.20_0.07	2.0	°	0.00	0.9
HD 204961	201.436_0.051	13.15_0.30^b	−46.048_0.022	−816.381_0.026	−0.00_0.95	−1.25_0.59	1.1	−46.047_0.023	−816.273_0.029	+0.24_0.09	−0.47_0.09	4.2	•	0.00	1.0
CD-44 11909	199.732_0.092	−34.84_0.30^b	−705.519_0.082	−937.569_0.078	−3.46_2.55	+0.17_1.88	1.1	−705.839_0.081	−937.836_0.077	−0.34_0.22	−0.15_0.16	1.4		0.21	1.1
omi02 Eri	198.595_0.551	−42.42_0.30^a	−2239.659_0.014	−3420.303_0.014	−0.46_0.23	+0.03_0.20	1.5	−2240.716_0.011	−3421.654_0.011	+0.25_0.49	+0.25_0.39	0.6		1.40	1.3
EV Lac	198.040_0.046	0.30_0.30^b	−706.130_0.037	−458.808_0.045	+0.77_1.12	−1.91_1.33	1.2	−706.091_0.042	−458.864_0.048	−0.07_0.10	−0.05_0.09	0.6		0.11	1.0
GJ 445	190.291_0.055	−111.61_0.30^a	+747.288_0.062	+480.542_0.040	−3.68_1.87	+0.86_1.51	1.6	+748.287_0.051	+480.720_0.046	−0.09_0.12	+0.00_0.11	0.6		0.22	1.4

HD 42581	173.724_0.054	4.70_0.30^a	−136.428_0.014	−714.929_0.021	−0.66_0.50	+1.27_0.81	1.5	−136.427_0.017	−714.899_0.020	+0.52_0.12	−4.10_0.17	19.7	⋆	0.00	1.0
e Eri	166.590_0.254	87.77_0.30^b	+3037.463_0.008	+726.558_0.008	+0.88_0.20	+0.02_0.21	3.0	+3035.017_0.006	+727.044_0.010	−1.17_0.55	+3.72_0.67	4.5	•	1.31	1.0
HD 79211	157.914_0.049	12.47_0.30^a	−1570.602_0.190	−660.666_0.208	+18.19_9.46	+19.79_6.94	2.3	−1570.289_0.192	−660.982_0.228	−2.82_0.21	+1.00_0.24	9.4	⋆	0.00	1.0
HD 79210	157.909_0.045	11.12_0.30^a	−1548.565_0.132	−568.636_0.170	+12.85_6.94	−7.95_4.53	1.8	−1548.294_0.131	−568.956_0.175	+2.21_0.15	−0.03_0.19	9.1	⋆	0.00	1.0
TW PsA	131.467_0.095	7.14_0.30^b	+330.153_0.018	−158.551_0.017	+0.96_0.65	−0.43_0.48	1.3	+330.142_0.015	−158.535_0.018	−0.51_0.13	+0.11_0.12	2.9	°	0.00	1.0
HD 103095	108.984_0.057	−98.08_0.30^a	+4002.617_0.012	−5813.190_0.009	+1.36_0.37	−0.43_0.23	3.3	+4002.625_0.013	−5817.733_0.009	+0.02_0.09	−0.01_0.07	0.2	•	0.00	1.0
51 Peg	64.678_0.135	−33.22_0.30^a	+207.532_0.009	+61.091_0.009	−0.28_0.31	−0.75_0.30	1.9	+207.554_0.011	+61.096_0.009	−0.17_0.23	+0.86_0.18	3.0	•	0.40	1.1
tau Boo	63.893_0.369	−16.25_0.10^c	−475.815_0.011	+57.972_0.009	−3.71_0.16	−4.48_0.13	28.2	−475.840_0.011	+57.967_0.011	+8.01_0.77	+6.79_0.59	10.9	⋆	1.79	1.3
bet Pic	50.652_0.361	19.89_0.70^d	+4.939_0.011	+83.935_0.018	−0.29_0.11	−0.83_0.15	4.7	+4.939_0.011	+83.930_0.018	−2.33_0.74	−1.27_0.74	2.5	•	2.14	1.2

Notes. The PM vectors at the HIPPARCOS (μ_H) and GDR2 (μ_G2) epochs are compared to the mean PM from the Hip2 and GDR2 positions (μ_HG). The differences are expressed in S/N Δ_H and Δ_G2. Δ is set to ⋆ for a strong detection (Δ_G2>5), • for 3 < Δ_G2 < 5 and ° for 2 < Δ_G2 < 3. ϵ_i is the astrometric excess noise and 𝜚 the renormalized unit weight error (Sect. 3.8). The stars are listed in order of decreasing parallax, and the names of the stars discussed in Sect. 5 are emphasized using bold characters. The full table is available from the CDS.

References. The reference for the radial velocities v_r are: K: Kervella et al. (2017), A: Aannestad et al. (1993),

^(a)

Nidever et al. (2002),

^(b)

Soubiran et al. (2018),

^(c)

Holmberg et al. (2007),

^(d)

Anderson & Francis (2012),

^(e)

Radial velocity unavailable.

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