2022A&A...657A...7K


Query : 2022A&A...657A...7K

2022A&A...657A...7K - Astronomy and Astrophysics, volume 657A, 7-7 (2022/1-1)

Stellar and substellar companions from Gaia EDR3. Proper-motion anomaly and resolved common proper-motion pairs.

KERVELLA P., ARENOU F. and THEVENIN F.

Abstract (from CDS):

Context. The multiplicity fraction of stars, down to the substellar regime, is a parameter of fundamental importance for stellar formation, evolution, and planetology. The census of multiple stars in the solar neighborhood is however incomplete. Aims. Our study is aimed at detecting companions of HIPPARCOS catalog stars from the proper motion anomaly (PMa) they induce on their host star, namely, the difference between their long-term HIPPARCOS-Gaia and short-term Gaia proper motion vectors. We also aim to detect resolved, gravitationally bound companions of the HIPPARCOS catalog stars (117 955 stars) and of the Gaia EDR3 stars closer than 100 pc (542 232 stars). Methods. Using the HIPPARCOS and EDR3 data, we revised the PMa catalog for the HIPPARCOS stars. In order to identify gravitationally bound visual companions of our sample, we searched the Gaia EDR3 catalog for common proper-motion (CPM) candidates. Results. The detection of tangential velocity anomalies with a median accuracy of σ(ΔvT) = 26 cm/s per parsec of distance is demonstrated with the EDR3. This improvement by a factor 2.5 in accuracy, as compared to Gaia DR2, results in PMa detection limits on companions that are well into the planetary mass regime for many targets. We identify 37 515 HIPPARCOS stars presenting a PMa at significant level (S/N > 3), namely, a fraction of 32% (compared to 30% for the DR2) and 12 914 (11%) hosting CPM bound candidate companions. After including the Gaia EDR3 renormalised unit weight error (RUWE > 1.4) as an additional indicator, 50 720 stars of the HIPPARCOS catalog (43%) exhibit at least one signal of binarity. Among the Gaia EDR3 stars located within 100 pc, we find CPM bound candidate companions for 39 490 stars (7.3% of the sample). Conclusions. The search for companions using a combination of the PMa, CPM, and RUWE indicators significantly improves the exhaustivity of the multiplicity survey. The detection of CPM companions of very bright stars (heavily saturated on the Gaia detectors) that are classical benchmark objects for stellar physics provides a useful proxy for estimating their distance with a higher accuracy than with HIPPARCOS.

Abstract Copyright: © P. Kervella et al. 2021

Journal keyword(s): astrometry - planets and satellites: detection - proper motions - binaries: visual - solar neighborhood - catalogs

VizieR on-line data: <Available at CDS (J/A+A/657/A7): tablea1.dat tablea2.dat tablea3.dat>

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 87

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Number of rows : 87
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 * del And SB* 00 39 19.6751809 +30 51 39.678320 6.04 4.56 3.28 2.36 1.70 K3III-IIIbCN0.5 322 0
2 Wolf 28 WD* 00 49 09.8983373329 +05 23 18.993828947 12.984 12.92 12.374 12.106 11.854 DZ7.5 239 0
3 G 272-61A Er* 01 39 01.3772561114 -17 57 02.587471791           M5.5V 117 0
4 G 272-61 ** 01 39 01.452936 -17 57 02.04516   13.93 12.08 11.782 8.93 M5.5V+M6V 58 0
5 G 272-61B Er* 01 39 01.6377185550 -17 57 01.001240728           M6V 837 0
6 GD 279 WD* 01 52 02.9620032216 +47 00 06.651152568 11.906 12.519 12.463 12.519 12.586 DA3.6 93 0
7 Feige 22 WD* 02 30 16.6275391056 +05 15 50.696500968 11.939 12.746 12.798 12.901 13.004 DA2.5 126 0
8 * alf UMi cC* 02 31 49.09456 +89 15 50.7923 3.00 2.62 2.02 1.53 1.22 F8Ib 654 2
9 * tet Eri ** 02 58 15.6752536 -40 18 16.852418           A2V 33 0
10 CPD-69 177 WD* 03 10 31.0195960176 -68 36 03.380768388 10.757 11.413 11.394 11.47 11.558 DA3.0 255 0
11 * tau04 Eri LP* 03 19 31.0022373 -21 45 28.304953 7.13 5.32 3.70 2.12 0.66 M3III-IIIaCa-1 108 0
12 LP 356-14 LM* 03 24 06.48469 +23 47 06.0741 13.04 11.913 10.422 9.438 8.298 M1+M3 75 0
13 HD 21589 PM* 03 30 45.0948810120 +42 12 08.769157704   7.33 6.94     F2 26 0
14 * eps Eri BY* 03 32 55.8444911587 -09 27 29.739493865 5.19 4.61 3.73 3.00 2.54 K2V 1837 1
15 * eps Eri b Pl 03 32 55.8449634 -09 27 29.731165           ~ 127 1
16 * gam Eri LP? 03 58 01.7669489 -13 30 30.669770 6.52 4.54 2.94 1.68 0.68 M0III-IIIb 183 0
17 * 50 Per RS* 04 08 36.6171573432 +38 02 23.058806100 7.78 5.97   5.2   F8V 213 0
18 * alf Ret PM* 04 14 25.4841381 -62 28 25.891671 4.90 4.27 3.36 2.71 2.27 G8IIIa: 116 0
19 * alf Tau LP? 04 35 55.23907 +16 30 33.4885 4.32 2.40 0.86 -0.37 -1.31 K5+III 1229 1
20 HD 33793 PM* 05 11 40.5898395497 -45 01 06.361734876 11.624 10.433 8.853 7.9 6.899 M1VIp 316 0
21 * alf Aur SB* 05 16 41.35871 +45 59 52.7693 1.33 0.88 0.08 -0.52 -0.96 G3III: 1165 0
22 G 96-29 PM* 05 17 23.8623810386 +45 50 22.927685973       9.70   M2.5V 66 0
23 * pi. Men c Pl 05 37 09.8851202601 -80 28 08.831347245           ~ 77 0
24 * pi. Men b Pl 05 37 09.8851202601 -80 28 08.831347245           ~ 66 1
25 * pi. Men PM* 05 37 09.8868446714 -80 28 08.834553264   6.25 5.67     G0V 300 1
26 * alf Col Be* 05 39 38.9410319 -34 04 26.794991 2.10 2.53 2.65 2.65 2.74 B9Ve 235 0
27 * alf Ori s*r 05 55 10.30536 +07 24 25.4304 4.38 2.27 0.42 -1.17 -2.45 M1-M2Ia-Iab 1593 0
28 * alf Car * 06 23 57.10988 -52 41 44.3810 -0.49 -0.59 -0.74 -0.96 -1.13 A9II 438 0
29 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1488 0
30 * alf CMa B WD* 06 45 09.3041925037 -16 43 00.724740067   8.41 8.44     DA1.9 524 1
31 LAWD 23 WD* 06 47 37.9897150309 +37 30 57.066665144   11.97 12.07 12.26   DA2.3 159 0
32 * L02 Pup AB* 07 13 32.3185436236 -44 38 22.951891964 7.90 6.66 5.10 2.49 0.07 M5IIIe 210 0
33 Gaia DR3 5559704601965623680 PM* 07 13 35.0739402127 -44 38 08.472673948           ~ 1 0
34 * pi. Pup LP* 07 17 08.55678 -37 05 50.8962 5.57 4.32 2.70 1.46 0.55 K4III 107 0
35 * sig Pup SB* 07 29 13.8304917 -43 18 05.159662 6.54 4.77 3.25 2.04 1.12 K5III 128 0
36 * c Pup * 07 45 15.2964161 -37 58 06.899807 7.06 5.34 3.61 2.26 1.26 K4III 96 0
37 * bet Cnc PM* 08 16 30.9210081 +09 11 07.957924 6.750 5.000 3.520 2.42 1.62 K4IIIBa0.5: 358 0
38 NAME Pup A SNR 08 24 07 -42 59.8           ~ 572 1
39 HD 87884 PM* 10 08 12.7878641256 +11 59 49.059655008 9.45 9.035 8.144 7.6   K0Ve 74 0
40 HD 87884B PM* 10 08 12.8970847392 +11 59 48.880230252           ~ 1 0
41 * alf Leo PM* 10 08 22.31099 +11 58 01.9516 0.88 1.24 1.40 1.37 1.47 B8IVn 838 0
42 * mu. UMa SB* 10 22 19.7397659 +41 29 58.269105 6.53 4.64 3.05 1.76 0.80 M0III 303 0
43 * tet Car SB* 10 42 57.4019674 -64 23 40.020796 1.53 2.54 2.76 2.87 3.10 B0Vp 331 0
44 * alf UMa SB* 11 03 43.67152 +61 45 03.7249 3.78 2.86 1.79 0.98 0.40 G9III+A7.5 434 0
45 Gaia DR3 862234033499968640 * 11 03 44.0454942702 +61 44 50.177184871           ~ 1 0
46 GD 140 WD* 11 37 05.1041466528 +29 47 58.288741080 11.47 12.42 12.45 12.73 12.714 DA2.2 229 0
47 LAWD 37 WD* 11 45 42.9169346379 -64 50 29.461957832 11.08 11.725 11.513 11.34 11.163 DQ 252 0
48 * del Cru Pu* 12 15 08.7167245 -58 44 56.136936 1.63 2.568 2.752     B2IV 206 1
49 * alf Cru SB* 12 26 35.89522 -63 05 56.7343           B0.5IV+B1V 83 0
50 * del Crv PM* 12 29 51.8551642 -16 30 55.552542 2.80 2.89 2.94 2.99 3.03 A0IV(n)kB9 198 0
51 * bet Cru bC* 12 47 43.26877 -59 41 19.5792 0.03 1.02 1.25 1.38 1.64 B1IV 336 0
52 * alf02 CVn a2* 12 56 01.6655889007 +38 19 06.155170512 2.44 2.76 2.88 2.98 3.05 A0VpSiEu 668 0
53 * zet UMa ** 13 23 55.54048 +54 55 31.2671           ~ 79 0
54 BD-07 3632 WD* 13 30 13.6370112733 -08 34 29.468140653 11.803 12.398 12.340 12.39 12.436 DA3.5 180 0
55 LAWD 52 WD* 13 38 50.4780906644 +70 17 07.640657534 11.807 12.54 12.60 13.01 12.979 DA2.4 211 0
56 NAME Proxima Centauri c Pl? 14 29 42.9451234609 -62 40 46.170818907           ~ 24 0
57 NAME Proxima Centauri b Pl 14 29 42.9451234609 -62 40 46.170818907           ~ 320 0
58 NAME Proxima Centauri Er* 14 29 42.9461331854 -62 40 46.164680672 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1190 0
59 * alf Cen ** 14 39 29.71993 -60 49 55.9990   0.4 -0.1     G2V+K1V 912 0
60 * eps Boo ** 14 44 59.21746 +27 04 27.2099   3.36 2.39     A0 49 0
61 Gaia DR3 1279752168030730496 * 14 45 05.0860308080 +27 04 27.587616839           ~ 1 0
62 StKM 1-1181 PM* 14 45 40.0039002504 +26 15 16.681845420   12.89 11.43     K4/5 4 0
63 * sig Lib LP* 15 04 04.2160765 -25 16 55.060636 6.86 4.91 3.21 1.60 0.33 M2.5III 182 0
64 CD-38 10980 WD* 16 23 33.8380498896 -39 13 46.161043572 9.916 10.885 11.029 10.936 10.841 DA2 469 0
65 * eta Dra PM* 16 23 59.4863284800 +61 30 51.155139060 4.35 3.65 2.74 2.12 1.66 G8-IIIab 291 0
66 V* DN Dra WD* 16 48 25.6318375106 +59 03 22.658985521   12.34 12.17 12.44   DA4.0 208 0
67 * zet Ara * 16 58 37.2121689 -55 59 24.520302   4.701 3.076     K3III 96 0
68 * bet Dra * 17 30 25.9616959 +52 18 04.999351 4.43 3.79 2.81 2.12 1.64 G2Ib-IIa 405 0
69 NAME Barnard's star BY* 17 57 48.4984700685 +04 41 36.113879676 12.497 11.24 9.511 8.298 6.741 M4V 764 2
70 * zet Aql PM* 19 05 24.6080155 +13 51 48.518212 2.99 3.00 2.99 2.98 2.98 A0IV-Vnn 339 0
71 LAWD 74 WD* 19 20 34.9229289504 -07 40 00.065957592 11.553 12.345 12.290 12.229 12.164 DBQA5 217 0
72 CD-30 17706 WD* 20 10 56.8486912016 -30 13 06.627142663 11.654 12.286 12.242 12.311 12.381 DA3.1 239 0
73 * alf Pav SB* 20 25 38.85705 -56 44 06.3230 1.03 1.791 1.918     B2IV 284 0
74 HD 340611 WD* 20 34 21.8847019255 +25 03 49.750446346 10.687 11.471 11.546 11.648 11.728 DA2.4 304 0
75 EGGR 141 WD* 20 42 34.7517579705 -20 04 35.932296319 11.511 12.315 12.396 12.488 12.602 DA2.5 100 0
76 * ksi Cyg SB* 21 04 55.8622910 +43 55 40.264460 7.17 5.39 3.73 2.55 1.63 K4.5Ib-II 303 0
77 * 61 Cyg A BY* 21 06 53.9395895022 +38 44 57.902349973 7.50 6.39 5.21 4.19 3.54 K5V 1005 0
78 * 61 Cyg ** 21 06 53.95 +38 44 57.9           ~ 172 0
79 * 61 Cyg B Er* 21 06 55.2638444466 +38 44 31.358519864 8.63 7.40 6.03 4.86 3.55 K7V 702 1
80 EGGR 150 WD* 21 52 25.3789636654 +02 23 19.576176425 11.942 12.732 12.743 12.839 12.938 DA2.8 184 0
81 * gam Gru PM* 21 53 55.7261962 -37 21 53.478974 2.52 2.89 3.01 3.06 3.12 B8IV-Vs 132 0
82 * eps Ind PM* 22 03 21.6536261624 -56 47 09.522795714   5.75 4.69     K5V 522 0
83 * eps Ind B BD* 22 04 10.5951812451 -56 46 58.239102418     24.12 20.8 15.60 T1V+T6V 152 1
84 * eps PsA Be* 22 40 39.3482564136 -27 02 37.015051704 3.69 4.071 4.177     B7III 149 0
85 * alf PsA ** 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1195 3
86 LAWD 93 WD* 23 43 50.7212145360 +32 32 46.728318300   13.06 12.94 13.12   DA3.8 141 0
87 NAME Local Bubble ISM ~ ~           ~ 821 0

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2023.01.30-22:32:23

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