Table 2.
Gaia information, inferred distances, and peculiar velocities of the 44 NS-HMXB sources with good astrometric data quality.
| Name | pmra | pmdec | Parallax | a.e.n. ( † ) | σa.e.n. ( † †) | rest | RV | Ref. | vpec |
|---|---|---|---|---|---|---|---|---|---|
| [mas yr−1] | [mas yr−1] | [mas] | [mas] | [kpc] | [km s−1] | [km s−1] | |||
| IGR J00370+6122 | −1.80 ± 0.01 | −0.53 ± 0.01 | 0.272 ± 0.012 | 0.07 | 7.91 |
 |
−80.0 ± 3.0 | [1] |
 |
| 1A 0114+650 | −1.24 ± 0.01 | 0.76 ± 0.01 | 0.196 ± 0.011 | 0.06 | 6.20 |
 |
−31.0 ± 5.0 | [2] |
 |
| 4U 0115+634 | −1.68 ± 0.01 | 0.50 ± 0.01 | 0.136 ± 0.016 | – | – |
 |
– | – |
 |
| IGR J01363+6610 | −1.63 ± 0.01 | −0.03 ± 0.01 | 0.167 ± 0.011 | 0.06 | 4.70 |
 |
– | – |
 |
| IGR J01583+6713 | −1.20 ± 0.01 | 0.30 ± 0.01 | 0.133 ± 0.013 | – | – |
 |
– | – |
 |
| LS I+61 303 | −0.42 ± 0.01 | −0.26 ± 0.01 | 0.378 ± 0.013 | 0.07 | 8.11 |
 |
−41.4 ± 0.6 | [3] |
 |
| EXO 0331+530 | −0.27 ± 0.02 | 0.44 ± 0.01 | 0.134 ± 0.020 | – | – |
 |
– | – |
 |
| X Per | −1.28 ± 0.05 | −1.87 ± 0.02 | 1.627 ± 0.037 | 0.29 | 167.97 |
 |
1.0 ± 0.9 | [4] |
 |
| XTE J0421+560 | −0.47 ± 0.02 | −0.51 ± 0.01 | 0.210 ± 0.015 | 0.09 | 15.08 |
 |
– | – |
 |
| RX J0440.9+4431 | 0.10 ± 0.02 | −1.19 ± 0.01 | 0.379 ± 0.015 | 0.07 | 7.05 |
 |
– | – |
 |
| EXO 051910+3737.7 | 1.30 ± 0.04 | −4.00 ± 0.02 | 0.721 ± 0.030 | 0.18 | 23.83 |
 |
– | – |
 |
| 1A 0535+262 | −0.59 ± 0.03 | −2.88 ± 0.02 | 0.525 ± 0.023 | 0.12 | 25.19 |
 |
−30.0 ± 4.0 | [5] |
 |
| HD 259440 | −0.03 ± 0.02 | −0.43 ± 0.02 | 0.540 ± 0.023 | 0.10 | 10.64 |
 |
36.9 ± 0.8 | [6] |
 |
| SAX J0635.2+0533 | −0.42 ± 0.01 | 0.40 ± 0.01 | 0.142 ± 0.015 | 0.05 | 2.84 |
 |
– | – |
 |
| IGR J08262−3736 | −2.37 ± 0.01 | 3.18 ± 0.01 | 0.178 ± 0.010 | 0.04 | 2.81 |
 |
– | – |
 |
| IGR J08408−4503 | −7.46 ± 0.02 | 6.10 ± 0.01 | 0.443 ± 0.017 | 0.14 | 16.19 |
 |
15.3 ± 0.5 | [7] |
 |
| Vela X-1 | −4.82 ± 0.01 | 9.28 ± 0.01 | 0.496 ± 0.015 | 0.10 | 12.15 |
 |
−3.2 ± 0.9 | [8] |
 |
| GRO J1008−57 | −4.70 ± 0.02 | 3.56 ± 0.01 | 0.243 ± 0.013 | 0.03 | 0.47 |
 |
– | – |
 |
| 2FGL J1019.0−5856 | −6.45 ± 0.01 | 2.26 ± 0.01 | 0.227 ± 0.010 | 0.05 | 3.30 |
 |
33.0 ± 3.0 | [9] |
 |
| 1A 1118−615 | −5.42 ± 0.01 | 1.37 ± 0.01 | 0.329 ± 0.011 | 0.07 | 6.38 |
 |
– | – |
 |
| 1E 1145.1−6141 | −6.23 ± 0.01 | 2.36 ± 0.01 | 0.127 ± 0.010 | 0.03 | 1.04 |
 |
-13.0 ± 3.0 | [10] |
 |
| 2E 1145.5−6155 | −6.23 ± 0.02 | 1.60 ± 0.01 | 0.475 ± 0.017 | 0.11 | 10.14 |
 |
– | – |
 |
| EXMS B1210−645 | −5.95 ± 0.02 | 0.45 ± 0.02 | 0.264 ± 0.018 | 0.11 | 6.77 |
 |
– | – |
 |
| GX 301−2 | −5.23 ± 0.02 | −2.07 ± 0.01 | 0.251 ± 0.016 | 0.11 | 12.94 |
 |
4.1 ± 2.4 | [11] |
 |
| GX 304−1 | −4.34 ± 0.01 | −0.24 ± 0.01 | 0.540 ± 0.014 | 0.09 | 10.30 |
 |
– | – |
 |
| PSR B1259−63 | −7.09 ± 0.01 | −0.34 ± 0.01 | 0.443 ± 0.013 | 0.07 | 4.90 |
 |
0.0 ± 1.0 | [12] ( * ) |
 |
| IGR J14331−6112 | −7.25 ± 0.11 | −3.98 ± 0.09 | 0.415 ± 0.116 | – | – |
 |
– | – |
 |
| 4U 1538−522 | −6.71 ± 0.01 | −4.11 ± 0.01 | 0.128 ± 0.015 | – | – |
 |
−158.0 ± 11.0 | [13] |
 |
| 1H 1555−552 | −3.12 ± 0.02 | −3.22 ± 0.01 | 0.732 ± 0.018 | 0.09 | 9.58 |
 |
– | – |
 |
| IGR J16195−4945 | −0.18 ± 0.06 | −0.54 ± 0.03 | 0.359 ± 0.051 | 0.08 | 0.63 |
 |
– | – |
 |
| IGR J16465−4507 | −1.76 ± 0.02 | −3.06 ± 0.01 | 0.296 ± 0.017 | – | – |
 |
– | – |
 |
| 4U 1700−377 | 2.41 ± 0.03 | 5.02 ± 0.01 | 0.633 ± 0.026 | 0.15 | 25.81 |
 |
−60.0 ± 10.0 | [14] |
 |
| RX J1744.7−2713 | −0.86 ± 0.02 | −2.30 ± 0.02 | 0.787 ± 0.024 | 0.09 | 4.67 |
 |
– | – |
 |
| IGR J17544−2619 | −0.51 ± 0.03 | −0.67 ± 0.02 | 0.396 ± 0.027 | 0.18 | 36.39 |
 |
−46.8 ± 4.0 | [15] |
 |
| LS 5039 | 7.43 ± 0.01 | −8.15 ± 0.01 | 0.490 ± 0.015 | – | – |
 |
17.3 ± 0.5 | [16] |
 |
| XTE J1855−026 | −2.52 ± 0.02 | −6.77 ± 0.01 | 0.078 ± 0.016 | – | – |
 |
– | – |
 |
| IGR J20006+3210 | −2.85 ± 0.02 | −4.30 ± 0.02 | 0.067 ± 0.021 | – | – |
 |
– | – |
 |
| RX J2030.5+4751 | −2.71 ± 0.02 | −4.54 ± 0.02 | 0.419 ± 0.016 | 0.15 | 30.89 |
 |
– | – |
 |
| GRO J2058+42 | −2.21 ± 0.02 | −3.35 ± 0.01 | 0.078 ± 0.015 | – | – |
 |
– | – |
 |
| SAX J2103.5+4545 | −3.51 ± 0.01 | −3.16 ± 0.01 | 0.131 ± 0.013 | – | – |
 |
– | – |
 |
| IGR J21347+4737 | −2.21 ± 0.01 | −2.56 ± 0.01 | 0.084 ± 0.014 | 0.02 | 0.22 |
 |
– | – |
 |
| Cep X-4 | −2.96 ± 0.01 | −2.20 ± 0.01 | 0.105 ± 0.013 | – | – |
 |
– | – |
 |
| 4U 2206+543 | −4.17 ± 0.02 | −3.32 ± 0.01 | 0.305 ± 0.014 | 0.11 | 14.00 |
 |
−54.5 ± 1.0 | [17] |
 |
| SAX J2239.3+6116 | −2.34 ± 0.02 | −1.02 ± 0.01 | 0.104 ± 0.014 | 0.04 | 1.04 |
 |
– | – |
 |
Notes. pmra and pmdec are respectively the proper motion in RA and Dec available in Gaia EDR3. ( † )astrometric_excess_noise, ( † †)astrometric_excess_noise_sig, see the online documentation (https://gea.esac.esa.int/archive/documentation/GDR3/). rest is the inferred distance, RV the systemic radial velocity, and vpec the inferred peculiar velocity. ( * )Since the systemic radial velocity is not given in this reference (Johnston et al. 1994), we fit the radial velocity curve in Fig. 2 using WebPlotDigitizer (Rohatgi 2021) to retrieve the value in the table.
References. [1] Grunhut et al. (2014); [2] Koenigsberger et al. (2003); [3] Aragona et al. (2009); [4] Grundstrom et al. (2007); [5] Hutchings (1984); [6] Moritani et al. (2018); [7] Gamen et al. (2015); [8] Stickland et al. (1997); [9] Strader et al. (2015); [10] Hutchings et al. (1987); [11] Kaper et al. (2006); [12] Johnston et al. (1994); [13] Abubekerov et al. (2004); [14] Gies & Bolton (1986); [15] Nikolaeva et al. (2013); [16] Casares et al. (2011); [17] Stoyanov et al. (2014).
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