2018A&A...610A...3J

Query : 2018A&A...610A...3J

2018A&A...610A...3J - Astronomy and Astrophysics, volume 610A, 3-3 (2018/2-1)

Detection of planet candidates around K giants. HD 40956, HD 111591, and HD 113996.

JEONG G., LEE B.-C., HAN I., OMIYA M., IZUMIURA H., SATO B., HARAKAWA H., KAMBE E. and MKRTICHIAN D.

Abstract (from CDS):

Aims. The purpose of this paper is to detect and investigate the nature of long-term radial velocity (RV) variations of K-type giants and to confirm planetary companions around the stars.
Methods. We have conducted two planet search programs by precise RV measurement using the 1.8m telescope at Bohyunsan Optical Astronomy Observatory (BOAO) and the 1.88m telescope at Okayama Astrophysical Observatory (OAO). The BOAO program searches for planets around 55 early K giants. The OAO program is looking for 190 G-K type giants.
Results. In this paper, we report the detection of long-period RV variations of three K giant stars, HD 40956, HD 111591, and HD 113996. We investigated the cause of the observed RV variations and conclude the substellar companions are most likely the cause of the RV variations. The orbital analyses yield P=578.6±3.3d, msini=2.7±0.6MJ, a=1.4±0.1AU for HD 40956; P=1056.4±14.3d, msini=4.4±0.4MJ, a=2.5±0.1AU for HD 111591; P=610.2±3.8d, msini=6.3±1.0MJ, a=1.6±0.1AU for HD 113996.

Abstract Copyright: © ESO, 2018

Journal keyword(s): stars: individual: (HD 40956, HD 111591, HD113996) - planetary systems - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/A+A/610/A3): stars.dat rvdat.dat>

Simbad objects: 17

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Number of rows : 17
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 * tau Cet PM* 01 44 04.0831371922 -15 56 14.927607677 4.43 4.22 3.50 2.88 2.41 G8V 1254 1
2 HD 15082 EB* 02 26 51.0582618096 +37 33 01.736482032   8.41 8.14     kA5hA8mF4 198 1
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17420 0
4 HD 40956 * 06 06 39.1549735248 +63 27 13.814847036 8.280 7.460 6.450     K0 27 0
5 HD 40956b Pl 06 06 39.1549735248 +63 27 13.814847036           ~ 6 0
6 BD+14 1881 Pe* 08 22 28.2046820904 +13 44 07.143774288   9.53 9.23   8.948 kA1hA5mA9Si 36 0
7 * mu. UMa SB* 10 22 19.7276765267 +41 29 58.337745272 6.53 4.64 3.05 1.76 0.80 M0III 311 0
8 HD 111591 PM* 12 50 17.2954350024 +22 51 48.276654876   7.43 6.43     K0III 43 0
9 HD 111591b Pl 12 50 17.2954350024 +22 51 48.276654876           ~ 4 0
10 * 41 Com PM* 13 07 10.7299222671 +27 37 29.055438610 8.14 6.22 4.69 3.64 2.83 K5-III 163 0
11 * 41 Com b Pl 13 07 10.7299222671 +27 37 29.055438610           ~ 4 0
12 BD+44 2654 * 17 06 26.5608176640 +44 46 37.068471552   10.682 10.069 10.036   F5 15 0
13 BD+10 3472 ** 18 18 58.4250287592 +10 35 50.129564460   10.96 10.64   10.007 ~ 29 0
14 BD+46 2629 EB* 19 07 53.104944 +46 52 06.00420   10.12 9.70 9.80   kA2hA5mA7(IV)m: 157 0
15 HD 195689b Pl 20 31 26.3534153736 +39 56 19.773037500           ~ 277 0
16 * 61 Cyg A BY* 21 06 53.9395895022 +38 44 57.902349973 7.50 6.39 5.21 4.19 3.54 K5V 1034 0
17 HD 201096 ** 21 07 12.677088 +14 34 34.53312   10.543 10.029 10.018   G 4 0

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