2020A&A...643A..98H


Query : 2020A&A...643A..98H

2020A&A...643A..98H - Astronomy and Astrophysics, volume 643A, 98-98 (2020/11-1)

VIBES: Visual Binary Exoplanet survey with SPHERE. Upper limits on wide S-planet and S-BD frequencies, triple system discovery, and astrometric confirmation of 20 stellar binaries and three triple systems.

HAGELBERG J., ENGLER N., FONTANIVE C., DAEMGEN S., QUANZ S.P., KUHN J., REGGIANI M., MEYER M., JAYAWARDHANA R. and KOSTOV V.

Abstract (from CDS):


Context. Recent surveys indicate that planets in binary systems are more abundant than previously thought, which is in agreement with theoretical work on disc dynamics and planet formation in binaries. So far, most observational surveys, however, have focused on short-period planets in binaries, thus little is known about the occurrence rates of planets on longer periods (≥10au).
Aims. In order to measure the abundance and physical characteristics of wide-orbit giant exoplanets in binary systems, we have designed the "VIsual Binary Exoplanet survey with Sphere" (VIBES) to search for planets in visual binaries. It uses the SPHERE instrument at VLT to search for planets in 23 visual binary and four visual triple systems with ages of <145Myr and distances of <150pc.
Methods. We used the IRDIS dual-band imager on SPHERE to acquire high-contrast images of the sample targets. For each binary, the two components were observed at the same time with a coronagraph masking only the primary star. For the triple star, the tight components were treated as a single star for data reduction. This enabled us to effectively search for companions around 50 individual stars in binaries and four binaries in triples.
Results. We derived upper limits of <13.7% for the frequency of sub-stellar companions around primaries in visual binaries, <26.5% for the fraction of sub-stellar companions around secondaries in visual binaries, and an occurrence rate of <9.0% for giant planets and brown dwarfs around either component of visual binaries. We have combined our observations with literature measurements to astrometrically confirm, for the first time, that 20 binaries and two triple systems, which were previously known, are indeed physically bound. Finally, we discovered a third component of the binary HD 121336.
Conclusions. The upper limits we derived are compatible with planet formation through the core accretion and the gravitational instability processes in binaries. These limits are also in line with limits found for single star and circumbinary planet search surveys.

Abstract Copyright: © ESO 2020

Journal keyword(s): planets and satellites: detection - planets and satellites: dynamical evolution and stability - binaries: visual - planet-star interactions

VizieR on-line data: <Available at CDS (J/A+A/643/A98): table3.dat table5.dat>

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

Simbad objects: 42

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Number of rows : 42
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME THA As* 00 00 -62.0           ~ 387 0
2 Smethells 165 ** 00 24 08.9765451863 -62 11 04.393080373   12.71 11.335 11.076 9.49 M0Ve 56 0
3 HD 22213 PM* 03 34 16.3525324729 -12 04 07.295206025   9.56 8.84   7.950 G8V 17 0
4 HD 285281 TT* 04 00 31.0706486828 +19 35 20.913765172   11.34 10.167 9.74 9.011 K1 37 0
5 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3790 0
6 TYC 8083-455-1 PM* 04 48 00.6676721634 -50 41 25.695359755   12.96 11.678 11.125 9.782 K7Ve 29 0
7 NAME Columba Association As* 06 04 19.4 -22 20 40           ~ 233 0
8 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 406 0
9 HD 102026 * 11 44 09.7837707327 -53 44 54.317482922   8.57 8.50     A1V 15 0
10 HD 104231 * 12 00 09.4061662928 -57 07 01.995322372   9.03 8.54     F5V 30 1
11 HD 104897 * 12 04 44.4772357301 -52 21 15.633432642   8.80 8.41     F3V 22 1
12 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 392 1
13 HD 108568 Ro* 12 28 40.0532438304 -55 27 19.334480772   9.50 8.954   8.269 G1IV 27 1
14 V* V823 Cen a2* 12 56 58.2221359148 -54 35 14.487809249   6.431 6.485     ApSiCr 67 0
15 HD 120178 * 13 49 09.2128040872 -54 13 42.303509201   9.40 8.89     F5V 23 0
16 UCAC4 180-112579 * 13 56 17.1771438289 -54 07 47.051207700       10.64   ~ 3 0
17 HD 121336 ** 13 56 19.96521 -54 07 56.7142           A1V 44 0
18 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 624 0
19 HD 127215 * 14 31 14.3793856953 -40 39 21.349094592   7.62 7.47     A1V 24 0
20 HD 128788 * 14 40 05.0107780163 -40 54 02.373875413   8.49 8.28     A5V 21 0
21 HD 133954 V* 15 08 42.5069215188 -44 29 04.356476385   8.32 8.14     A2/3III 24 0
22 NAME Upper Centaurus Lupus As* 15 24 -41.9           ~ 391 1
23 HD 138138 ** 15 31 17.20862 -33 49 11.4308           A2/3V 39 0
24 HD 144175 * 16 05 19.1476601945 -23 40 08.829045668   7.70 7.64     B9V 37 0
25 HD 144118 ** 16 05 46.27839 -39 50 35.9336   8.14 7.96     A5V 22 1
26 HD 144823 Ro* 16 08 43.6642854474 -25 22 36.576309923   9.28 8.80     F3V 35 0
27 NAME Upper Sco Association As* 16 12 -23.4           ~ 1129 1
28 HD 145792 a2* 16 13 45.49839 -24 25 19.5421         6.14 B6IV 117 0
29 NAME ASSOC II SCO As* 16 15 -24.2           ~ 1194 1
30 HD 146331 Ro* 16 16 50.6247453979 -25 51 46.704565035   8.69 8.30     B9V 36 0
31 HD 147432 ** 16 22 51.77663 -23 07 07.5271           A1III/IV 37 0
32 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3228 1
33 HD 148562 TT* 16 29 54.5956585494 -24 58 46.075096179 8.08 7.99 7.81     A2V 57 0
34 HD 148716 * 16 31 11.0701008056 -29 59 52.419135469   8.93 8.53     F3V 35 0
35 CD-43 12272A PM* 18 06 49.8928156699 -43 25 30.802222535   5.84 5.62     A6V 61 0
36 Kepler-420 Ro* 19 24 54.0384866371 +44 55 38.518268700   15.830 14.867     G5V 51 0
37 HD 196885 PM* 20 39 51.8753142885 +11 14 58.702911143   6.92 6.385 6.32   F8V 171 1
38 HD 199143 PM* 20 55 47.6748980673 -17 06 51.062191525   7.84 7.32 8.29   F8V 113 0
39 HD 208233 PM* 21 57 51.4678072474 -68 12 50.145911501   9.73 8.90   7.961 G9IV 43 0
40 HD 217379 ** 23 00 27.95355 -26 18 42.7951         8.86 K6.5Vke 50 0
41 HD 218396 El* 23 07 28.7156905667 +21 08 03.302133882   6.21 5.953     F0+VkA5mA5 985 0
42 * gam Cep SB* 23 39 20.9015326708 +77 37 56.505477975 5.190 4.250   2.6   K1III-IVCN1 564 1

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2021.10.26-05:09:26

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