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


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.09CEST04:25:40

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 - 2020
#notes
1 HAT-P-16 * 00 38 17.5584478065 +42 27 47.216927539   11.38 10.91     F8 47 1
2 HAT-P-32 * 02 04 10.2775457769 +46 41 16.210382751   11.79 11.44 11.23   ~ 51 1
3 WASP-12 ** 06 30 32.7966788910 +29 40 20.266334158   12.14 11.57     G0V 229 2
4 HD 233731 PM* 10 22 43.5924378707 +50 07 42.063457528   10.62 9.76 9.44   G5 30 1
5 HD 97658 PM* 11 14 33.1613362847 +25 42 37.391912066 9.049 8.569 7.714 7.259 6.835 K1V 128 1
6 HAT-P-21 * 11 25 05.9858337926 +41 01 40.669169701   12.56 11.46 11.71   G3 24 1
7 HAT-P-36 * 12 33 03.9061289086 +44 54 55.197073712   12.97 12.15 12.27   ~ 28 1
8 HAT-P-3 * 13 44 22.5939154049 +48 01 43.206257583   12.53 11.86     ~ 68 1
9 HAT-P-12 PM* 13 57 33.4668502171 +43 29 36.602501754   12.6 12.84     K5 57 1
10 HAT-P-26 PM* 14 12 37.5329989220 +04 03 36.117671696   12.33 11.76 11.56   K1 34 1
11 WASP-39 * 14 29 18.4151765921 -03 26 40.203046112   12.93 12.09 12.17 11.29 ~ 35 1
12 BD+22 2716b Pl 14 33 06.3573673505 +21 53 40.982782397           ~ 122 1
13 BD+22 2716 * 14 33 06.3573673505 +21 53 40.982782397   10.194 9.745     F5V 80 1
14 WASP-37 * 14 47 46.5618120089 +01 03 53.802386624   13.304 12.704 12.87 12.24 G2V 26 1
15 HAT-P-27 * 14 51 04.1870409044 +05 56 50.548178856   13.18 12.19 11.98 11.23 G8 44 1
16 WASP-24 * 15 08 51.7366806893 +02 20 35.964406086   12.00 11.22 11.43   F8-9 38 1
17 BD+36 2593 * 15 19 57.9205371377 +36 13 46.737977732   11.83 11.12     F 83 1
18 BD+28 2507 V* 16 02 11.8463105423 +28 10 10.419642379   11.88 11.25     G1V 91 1
19 HD 146389 * 16 15 50.3652643210 +10 01 57.284401784   9.866 9.39 9.22   F8 40 1
20 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2012 0
21 HAT-P-18 * 17 05 23.1475847690 +33 00 44.939145027   11.9   12.61   K2V 29 1
22 BD+38 2917 * 17 20 27.8782981532 +38 14 31.909663582   10.41 9.99     F5V 47 1
23 TrES-4 Pl 17 53 13.0490781575 +37 12 42.586106196           ~ 180 2
24 HAT-P-31 * 18 06 09.0499030368 +26 25 35.989709681   12.02 11.67 11.49   ~ 20 2
25 WASP-58b Pl 18 18 48.2530627697 +45 10 19.259152747           ~ 17 1
26 WASP-58 PM* 18 18 48.2530627697 +45 10 19.259152747   12.33 11.66     G2V 21 1
27 CoRoT-11 EB* 18 42 44.9499508376 +05 56 15.652163640   13.73 12.939     F6V 42 1
28 Kepler-8 Ro* 18 45 09.1489711922 +42 27 03.891516422           F6V 90 1
29 Kepler-1651 * 18 54 30.7992957242 +48 23 27.663668885   15.36 13.81 13.49   M2V 36 1
30 Kepler-25 Ro* 19 06 33.2143323702 +39 29 16.357969502   11.32 10.77 10.598   ~ 116 1
31 Kepler-1b Pl 19 07 14.0379171930 +49 18 59.090895318           ~ 281 2
32 Kepler-50 Ro* 19 12 24.2129932892 +50 02 01.370843497   11.02 10.54     F5 88 1
33 WASP-48 * 19 24 38.9615585228 +55 28 23.331729234   12.31 11.65 11.61   ~ 35 1
34 CoRoT-2 * 19 27 06.4944821296 +01 23 01.357597206   13.422 12.568 12.204 11.49 G7V+K9V 211 2
35 CoRoT-3 EB* 19 28 13.2642482783 +00 07 18.614302248   14.199 13.292 13.099 12.54 F3V 66 1
36 BD+47 2846 Er* 19 28 59.3538131541 +47 58 10.216250846   10.97 10.48     F6V 255 2
37 HAT-P-41 * 19 49 17.4399552361 +04 40 20.783585782   11.65 11.36     ~ 24 1
38 Kepler-17 Ro* 19 53 34.8642919207 +47 48 54.049941399   14.6   13.6   G5V 112 1
39 WASP-80 * 20 12 40.1691752075 -02 08 39.191157456   12.810 11.939 11.510 10.279 K7V-M0V 37 1
40 HD 351766 * 20 12 46.8867073562 +18 06 17.399935067   10.81 10.40 10.181   F8 22 1
41 Qatar 1 PM* 20 13 31.6176375816 +65 09 43.490914045   13.90 12.84 12.65 11.71 ~ 35 1
42 HAT-P-23 * 20 24 29.7235032857 +16 45 43.810322954   13.05 11.94 12.27   G0 44 1
43 WASP-2 ** 20 30 54.1279218812 +06 25 46.338261893   13 11.98     K1.5+M1V-M4V 118 2
44 HAT-P-17 PM* 21 38 08.7311406378 +30 29 19.445574063   11.33 10.38 10.24   G0 43 1
45 WASP-47 * 22 04 48.7262032385 -12 01 08.000987005     11.99 11.82   ~ 102 1
46 HAT-P-40 * 22 22 03.0875821831 +45 27 26.515961773   12.19 11.34     ~ 16 1
47 BD+34 4779 PM* 22 52 09.8635559135 +35 26 49.606963112   10.77 10.36 10.15   F8V 64 1
48 WASP-21 * 23 09 58.2534148377 +18 23 45.882492621   12.12 11.55 11.52   G3V 38 1
49 WASP-52 * 23 13 58.7575814237 +08 45 40.571306719   12.9 12.0 12.03   K2V 45 1
50 WASP-10 V* 23 15 58.3005497925 +31 27 46.294728182   12.4   12.03   K5V 74 1
51 WASP-59 * 23 18 29.5475402270 +24 53 21.436409769   14.01 12.78 12.37   K5V 12 1
52 WASP-28 * 23 34 27.8815921452 -01 34 48.112835474   12.61     11.47 F8-G0 31 1
53 WASP-60 * 23 46 39.9747198727 +31 09 21.372081122   12.86 12.18     G1V 14 1

    Equat.    Gal    SGal    Ecl

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2020.08.09-04:25:40

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