2018AJ....156...31M

Query : 2018AJ....156...31M

2018AJ....156...31M - Astron. J., 156, 31-31 (2018/July-1)

Stellar companions of exoplanet host stars in K2.

MATSON R.A., HOWELL S.B., HORCH E.P. and EVERETT M.E.

Abstract (from CDS):

It is well established that roughly half of all nearby solar-type stars have at least one companion. Stellar companions can have significant implications for the detection and characterization of exoplanets, including triggering false positives and masking the true radii of planets. Determining the fraction of exoplanet host stars that are also binaries allows us to better determine planetary characteristics as well as establish the relationship between binarity and planet formation. Using high angular resolution speckle imaging, we detect stellar companions within ∼1 arcsec of K2 planet-candidate host stars. Comparing our detected companion rate to TRILEGAL star count simulations and known detection limits of speckle imaging, we estimate the binary fraction of K2 planet host stars to be 40%-50%, similar to that of Kepler exoplanet hosts and field stars.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

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

Simbad objects: 31

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Number of rows : 31
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 286351 EB* 03 57 27.9105327648 +13 29 37.361236092   11.053 10.582 10.492   A5 12 0
2 TYC 1817-1110-1 Pe* 03 58 35.3272202400 +25 23 19.001596668   12.42 12.05     kA3hA6mA9Sr 13 0
3 1SWASP J041100.96+221931.2 SB* 04 11 00.963552 +22 19 31.22724   13.68 12.83 12.74   ~ 12 0
4 HD 46882 ** 06 36 44.2321441464 +21 39 05.603563224   8.83 8.72 9.02   kA1hA2mA3 12 0
5 TYC 1341-702-1 EB* 06 38 02.5785880274 +20 56 21.402668200   11.63 11.37 11.44   ~ 8 0
6 UCAC2 38789623 ** 08 15 35.476176 +19 54 53.49924   15.02 14.48 14.33   ~ 10 0
7 UCAC2 39843981 * 08 24 05.6560392624 +22 46 59.801187396   14.11 13.21 12.95   K3V 16 0
8 TYC 1398-697-1 PM* 08 32 17.6678297712 +22 00 21.699420516   11.53 10.79     ~ 15 0
9 UCAC4 511-046372 LM* 08 35 25.81344 +12 04 33.3228   15.68 14.09 13.65   M2V 15 0
10 UCAC2 39312965 EB* 08 39 21.2469874488 +21 23 26.981300832   12.95 12.34 12.28   ~ 16 0
11 TYC 1404-549-1 SB* 09 08 31.8042240936 +18 31 42.726328212   11.72 11.27     ~ 13 0
12 TYC 1407-12-1 ** 09 09 31.903416 +20 02 53.88000   12.42 11.77 11.81   ~ 9 0
13 UCAC2 28380251 ** 13 21 09.733776 -09 56 57.00516   14.88 13.76 13.66   K7V 13 0
14 BD-07 3612 * 13 24 56.7615387962 -08 10 18.365569381   11.49 10.97     ~ 12 0
15 PM J13269-0845 ** 13 26 56.925048 -08 45 46.84716   14.52 12.99 12.58   M3V 15 0
16 UCAC4 407-056645 LM* 13 29 56.5560302712 -08 44 58.741967256       15.29   M0V 7 0
17 2MASS J13302656-1120294 LM* 13 30 26.5588828968 -11 20 29.388659172           M1V 5 0
18 BD-16 3681 * 13 31 50.1129692544 -17 25 50.522288844   10.92 10.13 9.65 9.2 ~ 12 0
19 2MASS J13322094-1703403 * 13 32 20.9449910592 -17 03 40.219530696           K3V 8 0
20 UCAC4 391-059463 * 13 42 55.9077145920 -11 59 39.326818020   14.09 13.29 13.26   ~ 6 0
21 TYC 4973-277-1 LM* 13 49 32.3996133792 -06 19 21.920847204   12.82 11.73     M0V 15 0
22 UCAC2 27850466 ** 13 55 00.805560 -11 04 47.35632   12.64 11.80 11.57 10.91 ~ 15 0
23 2MASS J13554346-0925058 EB* 13 55 43.4612804760 -09 25 05.924085852   11.77 10.98     ~ 9 0
24 TYC 6286-2288-1 * 19 01 54.5363535480 -18 17 53.962475028   11.92 11.52     ~ 12 0
25 HATS-12 * 19 16 48.5748130704 -19 21 21.254552460   13.258 12.756     ~ 24 0
26 UCAC4 306-270810 ** 19 22 44.945520 -28 59 27.54204   15.43 14.52 14.29   ~ 6 0
27 CD-28 15924A * 19 32 18.8604480456 -27 53 04.495033140   10.65 10.07     ~ 2 0
28 CD-28 15924 ** 19 32 18.873744 -27 53 03.97932   10.05 9.51 9.65   ~ 5 0
29 CD-28 15924B * 19 32 18.8874824616 -27 53 03.397085376   10.89 10.18     ~ 6 0
30 UCAC4 335-205805 * 19 34 27.8548098912 -23 03 10.594855260     12.43 12.39   ~ 5 0
31 HD 184729A * 19 36 50.9060284296 -25 24 29.557161792   10.508 9.873 10.121   ~ 3 0

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