2014A&A...570A.127M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.03CEST21:56:28

2014A&A...570A.127M - Astronomy and Astrophysics, volume 570A, 127-127 (2014/10-1)

Searching for faint companions with VLTI/PIONIER. II. 92 main sequence stars from the Exozodi survey.

MARION L., ABSIL O., ERTEL S., LE BOUQUIN J.-B., AUGEREAU J.-C., BLIND N., DEFRERE D., LEBRETON J. and MILLI J.

Abstract (from CDS):

The Exozodi survey aims to determine the occurrence rate of bright exozodiacal discs around nearby main sequence stars using infrared interferometry. Although the Exozodi survey targets have been carefully selected to avoid the presence of binary stars, the results of this survey can still be biased by the presence of unidentified stellar companions. Using the PIONIER data set collected within the Exozodi survey in 2012, we aim to search for the signature of point-like companions around the Exozodi target stars. We make use of both the closure phases and squared visibilities collected by PIONIER to search for companions within the ∼100mas interferometric field of view. The presence of a companion is assessed by computing the goodness of fit to the data for a series of binary models with various separations and contrasts. Five stellar companions are resolved for the first time around five A-type stars: HD 4150, HD 16555, HD 29388, HD 202730, and HD 224392 (although the companion to HD 16555 was independently resolved by speckle interferometry while we were carrying out the survey). In the most likely case of main sequence companions, their spectral types range from A5V to K4V. Three of these stars were already suspected to be binaries from Hipparcos astrometric measurements, although no information was available on the companions themselves so far. In addition to debiasing the statistics of the Exozodi survey, these results can also be used to revise the fraction of visual binaries among A-type stars, suggesting that an extra ∼13% A-type stars are visual binaries in addition to the ones detected in previous direct imaging surveys. We estimate that about half the population of nearby A-type stars could be resolved as visual binaries using a combination of state-of-the-art interferometry and single-aperture imaging, and we suggest that a significant fraction of these binaries remains undetected to date.

Abstract Copyright:

Journal keyword(s): binaries: close - circumstellar matter - techniques: interferometric

Simbad objects: 94

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Number of rows : 94

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 142 PM* 00 06 19.17544 -49 04 30.6817   6.30 5.76     F7V 208 1
2 * zet Tuc PM* 00 20 04.2599713 -64 52 29.254760 4.82 4.80 4.23 3.73 3.40 F9.5V 342 0
3 * kap Phe PM* 00 26 12.2018266 -43 40 47.392917 4.22 4.11 3.94 3.78 3.70 A5IVn 139 0
4 * lam02 Phe PM* 00 35 41.1760207360 -48 00 03.268994930   5.948 5.510     F5V+ 60 0
5 HD 3823 PM* 00 40 25.6702570458 -59 27 16.565812842   6.44 5.88     G0VFe-0.9CH-0.4 146 0
6 * eta Phe * 00 43 21.2384109 -57 27 47.007307   4.350 4.361     A0IV 83 0
7 * nu. Phe PM* 01 15 11.1225892742 -45 31 54.007631265 5.65 5.54 4.96 4.47 4.11 F9VFe+0.4 230 0
8 * kap Tuc ** 01 15 46.16226 -68 52 33.3356   4.73 4.25 4.82   F6V+K1V 106 0
9 * q01 Eri PM* 01 42 29.3148822519 -53 44 26.991165270   6.05 5.52     F9V 263 1
10 * chi Cet PM* 01 49 35.1031601 -10 41 11.067376 5.04 5.00 4.68 4.38 4.22 F0V 178 0
11 HD 14412 PM* 02 18 58.5046943868 -25 56 44.473476858   7.07 6.34     G8V 193 0
12 * del Hyi PM* 02 21 44.9406128026 -68 39 33.889015176 4.17 4.12 4.09 4.05 4.04 A2V 101 0
13 * sig Cet ** 02 32 05.2288409 -15 14 40.827782 5.19 5.20 4.75 4.34 4.07 F5V 184 0
14 * eta Hor ** 02 37 24.3880289210 -52 32 34.913179191   5.569 5.293     A6V 68 0
15 * iot Hor PM* 02 42 33.4664838826 -50 48 01.056222150   5.97 5.40     F8V 340 1
16 HD 17925 RS* 02 52 32.1281853696 -12 46 10.970649463 7.48 6.91 6.05 5.34 4.89 K1V 470 0
17 * rho03 Eri PM* 03 04 16.5169664024 -07 36 03.077195124   5.46 5.30     A5V 61 0
18 * zet01 Ret PM* 03 17 46.1632605674 -62 34 31.154247481 6.24 6.18 5.54 5.00 4.66 G2.5VHdel1 269 0
19 * zet02 Ret PM* 03 18 12.8185412558 -62 30 22.917300282   5.84 5.24     G1V 324 0
20 * e Eri PM* 03 19 55.6509352 -43 04 11.217495 5.20 4.98 4.27 3.65 3.25 G6V 397 1
21 * kap Ret PM* 03 29 22.6772397 -62 56 15.099119   5.10 4.71     F3IV/V 154 1
22 * del Eri RS* 03 43 14.9008787 -09 45 48.208444 5.13 4.46 3.54 2.82 2.32 K0+IV 542 0
23 HD 25457 TT* 04 02 36.7451443573 -00 16 08.118566607   5.88 5.38     F7V 237 0
24 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2654 0
25 * b Tau PM* 04 28 50.1638027833 +13 02 51.375403335   5.226 5.014 4.907 4.795 kA5hF0VmF0 174 0
26 * c Tau PM* 04 38 09.4616564927 +12 30 38.991822704 4.52 4.39 4.27 4.13 4.08 A6V 175 0
27 * 58 Eri BY* 04 47 36.2917607568 -16 56 04.041927355   6.14 5.50     G2.5IV-V 384 0
28 * pi.01 Ori PM* 04 54 53.7287660 +10 09 02.995200   4.723 4.648     A0Va_lB 237 0
29 HD 31925 ** 04 59 01.36250 -16 22 33.6890       6.90   hF5gF5mF3 76 0
30 * zet Dor PM* 05 05 30.6561782324 -57 28 21.728931803   5.215 4.708     F9VFe-0.5 214 0
31 * bet Eri PM* 05 07 50.98549 -05 05 11.2055 3.02 2.92 2.79 2.65 2.57 A3IV 210 0
32 HD 34721 PM* 05 18 50.4728766225 -18 07 48.186302167   6.54 5.96     G0V 110 0
33 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1653 1
34 HD 38858 PM* 05 48 34.9401453172 -04 05 40.719529406 6.71 6.61 5.97     G2V 251 1
35 HD 40307 PM* 05 54 04.2409953924 -60 01 24.491747849 8.814 8.097 7.147 6.597 6.119 K2.5V 199 1
36 HD 43162 BY* 06 13 45.2955618090 -23 51 42.968779940   7.068 6.366 5.94 5.61 G6.5V 146 0
37 HD 45184 PM* 06 24 43.8797456693 -28 46 48.416253741   7.01 6.39 6.24 8.94 G2Va 163 1
38 HD 53705 PM* 07 03 57.3152423334 -43 36 28.921620874   5.94 5.28 5.05 4.71 G1.5V 168 1
39 * lam Gem PM* 07 18 05.5801227701 +16 32 25.396438474   3.674 3.559     A4IV 230 0
40 HD 69830 PM* 08 18 23.9469692487 -12 37 55.810202572   6.74 5.95     G8:V 464 2
41 * 30 Mon PM* 08 25 39.6320108 -03 54 23.117820 3.85 3.88 3.90 3.87 3.92 A0Va 257 0
42 HD 72673 PM* 08 32 51.4958311521 -31 30 03.062906467   7.17 6.38     K1V 182 0
43 HD 76151 PM* 08 54 17.9469808897 -05 26 04.046487788 6.89 6.67 6.00     G2V 470 0
44 HD 76932 PM* 08 58 43.9328634171 -16 07 57.805389219 6.47 6.39 5.86     G2VFe-1.8CH-1 366 0
45 * psi Vel ** 09 30 41.99958 -40 28 00.2616 3.89 3.96 3.60 3.24 3.02 F3VFe-0.7 105 0
46 * q Vel PM* 10 14 44.1557297 -42 07 18.993292 3.98 3.90 3.85 3.83 3.81 A2Va 119 0
47 HD 90132 PM* 10 23 29.2960641747 -38 00 35.413625140   5.564 5.329     A8V 61 0
48 * Y Vel PM* 10 31 21.8213012849 -53 42 55.737315449   5.39 4.89     F9VFe-0.8CH-0.7 140 0
49 * gam Crt PM* 11 24 52.9236199 -17 41 02.429978   4.25 4.06 6.12   A7V(n) 117 0
50 HD 102365 PM* 11 46 31.0719919710 -40 30 01.279976346 5.65 5.55 4.88 4.35 3.97 G2V 285 1
51 HD 104731 PM* 12 03 39.5716899876 -42 26 02.603692163 5.53 5.56 5.15     F5V 121 0
52 * del Crv PM* 12 29 51.8551642 -16 30 55.552542 2.80 2.89 2.94 2.99 3.03 A0IV(n)kB9 184 0
53 * tau Cen PM* 12 37 42.1634721166 -48 32 28.709954610 3.94 3.91 3.86 3.81 3.77 A1IVnn 95 0
54 * 61 Vir PM* 13 18 24.3142756 -18 18 40.304648 5.710 5.440 4.740     G6.5V 592 1
55 * tau Boo Ro* 13 47 15.74340 +17 27 24.8552 5.02 4.98 4.49 4.09 3.85 F7IV-V 879 1
56 * alf Cir a2* 14 42 30.4195804 -64 58 30.493451 3.55 3.43 3.19 2.96 2.86 A7VpSrCrEu 329 0
57 * mu. Vir PM* 14 43 03.6228218 -05 39 29.532712 4.25 4.26 3.88 3.48 3.26 F2V 210 0
58 * 109 Vir PM* 14 46 14.9253599 +01 53 34.384496 3.69 3.72 3.73 3.66 3.68 A0IIInn 317 0
59 * c Boo PM* 15 07 18.0658711040 +24 52 09.095241798 5.34 5.36 4.93 4.53 4.32 F5V 336 0
60 * bet Cir PM* 15 17 30.8501567 -58 48 04.337319   4.153 4.057     A3Va 109 0
61 * 5 Ser Ro* 15 19 18.79710 +01 45 55.4685   5.60   4.8   F8IV 321 0
62 * g Lup PM* 15 41 11.3769921 -44 39 40.342813   5.04 4.64     F3/5V 178 0
63 * bet TrA PM* 15 55 08.5620636 -63 25 50.615531 3.19 3.14 2.85 2.53 2.38 F1V 145 0
64 * 12 Oph BY* 16 36 21.4492997704 -02 19 28.512485729 7.00 6.55 5.77 5.13 4.74 K1V 447 0
65 HD 152391 Ro* 16 52 58.8025427362 -00 01 35.116299669   7.40 6.64     G8.5Vk: 336 0
66 * lam Ara PM* 17 40 23.8255179884 -49 24 56.104103575   5.17 4.77     F4V 103 0
67 * 58 Oph PM* 17 43 25.7937012 -21 40 59.497954   5.313 4.861     F5V 129 0
68 * zet Ser PM* 18 00 29.0113725 -03 41 24.968552   4.982 4.616     F2V 174 0
69 * 72 Oph PM* 18 07 20.9839294 +09 33 49.850100 3.95 3.85 3.73 3.59 3.54 A5V 131 0
70 HD 172555 PM* 18 45 26.9004853 -64 52 16.539796   4.967 4.767     A7V 234 0
71 * alf CrA PM* 19 09 28.3409747 -37 54 16.102206   4.146 4.087     A2Va 103 0
72 * b Aql PM* 19 24 58.2002406780 +11 56 39.882312617 6.35 5.93   4.7   G7IVHdel1 455 0
73 * eps Pav PM* 20 00 35.5555788 -72 54 37.819779   3.927 3.940     A0Va 111 0
74 * rho Aql PM* 20 14 16.6190578195 +15 11 51.374752540   5.006 4.946     A1Va 117 0
75 * phi01 Pav PM* 20 35 34.8493105655 -60 34 54.310346540   5.036 4.745     F0V 70 0
76 * eta Ind dS* 20 44 02.3340423 -51 55 15.496981   4.767 4.495     A9IV 75 0
77 * psi Cap PM* 20 46 05.7326265 -25 16 15.231155   4.538 4.122     F5V 198 0
78 * tet Ind B PM* 21 19 51.1976834891 -53 26 57.846769200   7.43 6.867     G0V 5 1
79 * tet Ind ** 21 19 51.9895536 -53 26 57.931471           A5IV-V+G0V 64 0
80 * gam Pav PM* 21 26 26.6048372 -65 21 58.314484 4.57 4.70 4.22 3.75 3.45 F9VFe-1.4CH-0.7 376 0
81 V* HN Peg BY* 21 44 31.3299733695 +14 46 18.982331039       6.16   G0V+ 449 0
82 HD 207129 PM* 21 48 15.7510673466 -47 18 13.020109072   6.18 5.58     G2V 286 0
83 * mu. PsA PM* 22 08 23.0147774399 -32 59 18.378259174 4.60 4.55 4.50 4.43 4.38 A1.5IVn 114 0
84 HD 210277 PM* 22 09 29.8657193934 -07 32 55.163014863   8.85 8.57 7.36   G8V 297 2
85 * tau PsA PM* 22 10 08.7803395485 -32 32 54.275502381   5.40 4.92     F6V 129 0
86 * tet Peg PM* 22 10 11.9852752 +06 11 52.307750 3.72 3.62 3.55 3.50 3.46 A1Va 162 0
87 * ups Aqr PM* 22 34 41.6367033191 -20 42 29.574530725   5.64 5.20     F7V 116 0
88 HD 214953 PM* 22 42 36.8832950512 -47 12 38.924870780 6.64 6.67 6.06 7.11   F9.5V 132 0
89 * ksi Peg PM* 22 46 41.5811758 +12 10 22.385447 4.66 4.69 4.20 3.73 3.42 F6V 353 1
90 * eps Gru SB* 22 48 33.2983075490 -51 19 00.732184713   3.556 3.466     A2IVn 116 0
91 * tau01 Gru PM* 22 53 37.9322277750 -48 35 53.824643522 6.85 6.66 6.04     G0V 165 1
92 HD 219482 PM* 23 16 57.6873978547 -62 00 04.318777045   6.146 5.647     F6V 102 0
93 * gam Tuc PM* 23 17 25.7507806263 -58 14 08.707239934 4.35 4.37 3.98 3.57 3.33 F4V 147 0
94 * eta Tuc ** 23 57 35.0785168096 -64 17 53.622899148   5.046 4.989     A1V 78 0

    Equat.    Gal    SGal    Ecl

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2020.07.03-21:56:28

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