2022A&A...662A..12J


Query : 2022A&A...662A..12J

2022A&A...662A..12J - Astronomy and Astrophysics, volume 662A12-12 (2022/6-1)

Search for exoplanets around northern circumpolar stars. V. Three likely planetary companions to the giant stars HD 19615, HD 150010, and HD 174205.

JEONG G., LEE B.-C., PARK M.-G., BANG T.-Y. and HAN I.

Abstract (from CDS):


Aims. We report the detection of long-period radial velocity (RV) variations in three giant stars, HD 19615, HD 150010, and HD 174205, using precise RV measurements.
Methods. These detections are part of the Search for Exoplanets around Northern Circumpolar Stars (SENS) survey being conducted at the Bohyunsan Optical Astronomy Observatory (BOAO). The nature of the RV variations was investigated by analyzing the photometric and line shape variations. We found no variability with the RV period in these quantities and conclude that the RV variations are most likely caused by planetary companions.
Results. Orbital solutions for the three stars yield orbital periods of 402 d, 562 d, and 582 d and minimum masses of 8.5 MJ, 2.4 MJ, and 4.2 MJ, respectively. These masses and periods are typical for planets around intermediate-mass stars, although some unclear interpretations and recent studies may being calling some planet convictions into question. Nevertheless, the SENS program is contributing to our knowledge of giant planets around intermediate-mass stars.

Abstract Copyright: © G. Jeong et al. 2022

Journal keyword(s): techniques: radial velocities - planetary systems - stars: individual: HD 19615 - stars: individual: HD 150010 - stars: individual: HD 174205

Simbad objects: 10

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Number of rows : 10
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 * tau Cet PM* 01 44 04.0831371922 -15 56 14.927607677 4.43 4.22 3.50 2.88 2.41 G8V 1354 1
2 HD 16915 * 02 41 56.6355579288 -28 32 48.177625776   10.24 9.15     K0III 13 1
3 HD 19615b Pl? 03 15 07.5448462368 +73 52 05.321462952           ~ 1 0
4 HD 19615 * 03 15 07.5448462368 +73 52 05.321462952   8.03 6.56     K0 20 0
5 * alf Tau LP? 04 35 55.23907 +16 30 33.4885 4.32 2.40 0.86 -0.37 -1.31 K5+III 1298 2
6 HD 150010b Pl? 16 31 28.2272499978 +72 36 44.417039002           ~ 2 0
7 HD 150010 PM* 16 31 28.2272499978 +72 36 44.417039002   7.64 6.31     K2III 46 0
8 * gam Dra * 17 56 36.36988 +51 29 20.0242 5.630 3.760 2.230 1.08 0.23 K5III 581 1
9 HD 174205b Pl? 18 43 10.3521638832 +70 47 34.252246500           ~ 2 0
10 HD 174205 * 18 43 10.3521638832 +70 47 34.252246500 8.770 7.530 6.270     K2 24 0

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