2015A&A...575A..23W


Query : 2015A&A...575A..23W

2015A&A...575A..23W - Astronomy and Astrophysics, volume 575A, 23-23 (2015/3-1)

A Lucky Imaging search for stellar companions to transiting planet host stars.

WOELLERT M., BRANDNER W., BERGFORS C. and HENNING T.

Abstract (from CDS):

The presence of stellar companions around planet hosting stars influences the architecture of their planetary systems. To find and characterise these companions and determine their orbits is thus an important consideration to understand planet formation and evolution. For transiting systems even unbound field stars are of interest if they are within the photometric aperture of the light curve measurement. Then they contribute a constant flux offset to the transit light curve and bias the derivation of the stellar and planetary parameters if their existence is unknown. Close stellar sources are, however, easily overlooked by common planet surveys due to their limited spatial resolution. We therefore performed high angular resolution imaging of 49 transiting exoplanet hosts to identify unresolved binaries, characterize their spectral type, and determine their separation. The observations were carried out with the Calar Alto 2.2m telescope using the Lucky Imaging camera AstraLux Norte. All targets were imaged in i' and z' passbands. We found new companion candidates to WASP-14 and WASP-58, and we re-observed the stellar companion candidates to CoRoT-2, CoRoT-3, CoRoT-11, HAT-P-7, HAT-P-8, HAT-P-41, KIC 10905746, TrES-2, TrES-4, and WASP-2. We deduce from the stellar density around all sources that two companion candidates out of the targets with the first position measurement (CoRoT-11, HAT-P-41, KIC 10905746, WASP-14 and WASP-58) are probably unbound. In addition, we re-analyse the influence of the sources close to WASP-14 and WASP-58 on the planetary parameters given in the literature and find no significant changes.

Abstract Copyright:

Journal keyword(s): techniques: high angular resolution - binaries: visual - planetary systems

Simbad objects: 53

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Number of rows : 53
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 HAT-P-16 * 00 38 17.5584024024 +42 27 47.216738232   11.38 10.91     F8 53 1
2 HAT-P-32 * 02 04 10.2774374568 +46 41 16.212315084   11.79 11.44 11.23   ~ 56 1
3 WASP-12 ** 06 30 32.7966092352 +29 40 20.263502460   12.14 11.57     G0V 265 2
4 HD 233731 PM* 10 22 43.5923328528 +50 07 42.062425248   10.62 9.76 9.44   G5 37 1
5 HD 97658 PM* 11 14 33.1612754184 +25 42 37.390358520 9.049 8.569 7.714 7.259 6.835 K1V 152 1
6 HAT-P-21 * 11 25 05.9859193536 +41 01 40.664937216   12.56 11.46 11.71   G3 27 1
7 HAT-P-36 * 12 33 03.9061156728 +44 54 55.196024616   12.97 12.15 12.27   ~ 37 1
8 HAT-P-3 * 13 44 22.5937349736 +48 01 43.205733624   12.53 11.86     K1V 73 1
9 HAT-P-12 PM* 13 57 33.4668726399 +43 29 36.601508739   12.6 12.84     K5 69 1
10 HAT-P-26 PM* 14 12 37.5331103311 +04 03 36.116569918   12.33 11.76 11.56   K1 42 1
11 WASP-39 * 14 29 18.4151689656 -03 26 40.204480380   12.93 12.09 12.17 11.29 ~ 40 1
12 BD+22 2716 * 14 33 06.3571702344 +21 53 40.981395876   10.194 9.745     F5V 87 1
13 BD+22 2716b Pl 14 33 06.3573673505 +21 53 40.982782397           ~ 143 1
14 WASP-37 * 14 47 46.5619510032 +01 03 53.799541704   13.304 12.704 12.87 12.24 G2V 31 1
15 HAT-P-27 * 14 51 04.1870399712 +05 56 50.548526376   13.18 12.19 11.98 11.23 G8 51 1
16 WASP-24 * 15 08 51.7367171808 +02 20 35.962165104   12.00 11.22 11.43   F8-9 44 1
17 BD+36 2593 * 15 19 57.9203617176 +36 13 46.738078788   11.83 11.12     F 94 1
18 BD+28 2507 V* 16 02 11.8462322592 +28 10 10.420201452   11.88 11.25     G1V 96 1
19 HD 146389 * 16 15 50.3653280520 +10 01 57.284258556   9.866 9.39 9.22   F8 45 1
20 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2099 0
21 HAT-P-18 * 17 05 23.1475097496 +33 00 44.940001716   11.9   12.61   K2V 39 1
22 BD+38 2917 * 17 20 27.8781604680 +38 14 31.908984936   10.41 9.99     F5V 55 1
23 TrES-4 Pl 17 53 13.0490781575 +37 12 42.586106196           ~ 191 2
24 HAT-P-31 * 18 06 09.0498478464 +26 25 35.989962204   12.02 11.67 11.49   ~ 23 2
25 WASP-58 PM* 18 18 48.2529552984 +45 10 19.260291288   12.33 11.66     G2V 24 1
26 WASP-58b Pl 18 18 48.2530627697 +45 10 19.259152747           ~ 21 1
27 CoRoT-11 EB* 18 42 44.9499236256 +05 56 15.652972716   13.73 12.939     F6V 44 1
28 Kepler-8 Ro* 18 45 09.1489991376 +42 27 03.891327156           F6V 98 1
29 Kepler-1651 Er* 18 54 30.7994107320 +48 23 27.663646164   15.36 13.81 13.49   M2V 39 1
30 Kepler-25 Ro* 19 06 33.2141354736 +39 29 16.358725104   11.32 10.77 10.598   ~ 130 1
31 Kepler-1b Pl 19 07 14.0379171930 +49 18 59.090895318           ~ 302 2
32 Kepler-50 Ro* 19 12 24.2128368312 +50 02 01.374741852   11.02 10.54     F5 97 1
33 WASP-48 * 19 24 38.9614451424 +55 28 23.332107108   12.31 11.65 11.61   ~ 39 1
34 CoRoT-2 * 19 27 06.4944378024 +01 23 01.359897468   13.422 12.568 12.204 11.49 G7V+K9V 228 2
35 CoRoT-3 EB* 19 28 13.2642131544 +00 07 18.613986132   14.199 13.292 13.099 12.54 F3V 70 1
36 BD+47 2846 Er* 19 28 59.3538826128 +47 58 10.217007804   10.97 10.48     F6V 278 2
37 HAT-P-41 * 19 49 17.4398486136 +04 40 20.786070360   11.65 11.36     ~ 30 1
38 Kepler-17 Ro* 19 53 34.8643397568 +47 48 54.049530564   14.6   13.6   G5V 132 1
39 WASP-80 PM* 20 12 40.1693365800 -02 08 39.187438476   12.810 11.939 11.510 10.279 K7V-M0V 49 1
40 HD 351766 * 20 12 46.8865572432 +18 06 17.402572008   10.81 10.40 10.181   F8 24 1
41 Qatar 1 PM* 20 13 31.6172746704 +65 09 43.492226796   13.90 12.84 12.65 11.71 ~ 45 1
42 HAT-P-23 * 20 24 29.7234392904 +16 45 43.811510112   13.05 11.94 12.27   G0 51 1
43 WASP-2 V* 20 30 54.1282355304 +06 25 46.341284844   13 11.98     K1.5 124 1
44 HAT-P-17 PM* 21 38 08.7310010424 +30 29 19.446386748   11.33 10.38 10.24   G0 48 1
45 WASP-47 * 22 04 48.7261549272 -12 01 07.998743676     11.99 11.82   ~ 127 1
46 HAT-P-40 * 22 22 03.0875673648 +45 27 26.518064616   12.19 11.34     ~ 21 1
47 BD+34 4779 PM* 22 52 09.8636387352 +35 26 49.608422844   10.77 10.36 10.15   F8V 70 1
48 WASP-21 * 23 09 58.2534443016 +18 23 45.885822792   12.12 11.55 11.52   G3V 46 1
49 WASP-52 * 23 13 58.7576098848 +08 45 40.572305352   12.9 12.0 12.03   K2V 59 1
50 WASP-10 V* 23 15 58.3006181424 +31 27 46.296056268   12.4   12.03   K5V 80 1
51 WASP-59 * 23 18 29.5474746528 +24 53 21.438581712   14.01 12.78 12.37   K5V 14 1
52 WASP-28 * 23 34 27.8814904872 -01 34 48.110067912   12.61     11.47 F8-G0 35 1
53 WASP-60 * 23 46 39.9747314352 +31 09 21.374361072   12.86 12.18     G1V 19 1

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2022.05.28-21:26:17

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