2021A&A...653A..78D


Query : 2021A&A...653A..78D

2021A&A...653A..78D - Astronomy and Astrophysics, volume 653A, 78-78 (2021/9-1)

The SOPHIE search for northern extrasolar planets. XVIII. Six new cold Jupiters, including one of the most eccentric exoplanet orbits.

DEMANGEON O.D.S., DALAL S., HEBRARD G., NSAMBA B., KIEFER F., CAMACHO J.D., SAHLMANN J., ARNOLD L., ASTUDILLO-DEFRU N., BONFILS X., BOISSE I., BOUCHY F., BOURRIER V., CAMPANTE T., DELFOSSE X., DELEUIL M., DIAZ R.F., FARIA J., FORVEILLE T., HARA N., HEIDARI N., HOBSON M.J., LOPEZ T., MOUTOU C., REY J., SANTERNE A., SOUSA S., SANTOS N.C., STROM P.A., TSANTAKI M. and UDRY S.

Abstract (from CDS):


Context. Due to their low transit probability, the long-period planets are, as a population, only partially probed by transit surveys. Radial velocity surveys thus have a key role to play, in particular for giant planets. Cold Jupiters induce a typical radial velocity semi-amplitude of 10m/s, which is well within the reach of multiple instruments that have now been in operation for more than a decade.
Aims. We take advantage of the ongoing radial velocity survey with theSOPHIE high-resolution spectrograph, which continues the search started by its predecessorELODIE to further characterize the cold Jupiter population.
Methods. Analyzing the radial velocity data from six bright solar-like stars taken over a period of up to 15yr, we attempt the detection and confirmation of Keplerian signals.
Results. We announce the discovery of six planets, one per system, with minimum masses in the range 4.8-8.3Mjup and orbital periods between 200 days and 10yr. The data do not provide enough evidence to support the presence of additional planets in any of these systems. The analysis of stellar activity indicators confirms the planetary nature of the detected signals.
Conclusions. These six planets belong to the cold and massive Jupiter population, and four of them populate its eccentric tail. In this respect, HD 80869 b stands out as having one of the most eccentric orbits, with an eccentricity of 0.862–0.018+0.028. These planets can thus help to better constrain the migration and evolution processes at play in the gas giant population. Furthermore, recent works presenting the correlation between small planets and cold Jupiters indicate that these systems are good candidates to search for small inner planets.

Abstract Copyright: © ESO 2021

Journal keyword(s): techniques: radial velocities - planets and satellites: detection

VizieR on-line data: <Available at CDS (J/A+A/653/A78): hd27969.dat hd80869.dat hd95544.dat hd109286.dat hd115954.dat hd211403.dat>

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 HD 27969b Pl? 04 26 49.4514771763 +42 54 34.146213919           ~ 1 0
2 HD 27969 PM* 04 26 49.4518475472 +42 54 34.146235908       7.2   G5 37 0
3 HD 76920b Pl 08 55 16.8171056217 -67 15 55.699683612           ~ 8 0
4 HD 80869b Pl? 09 23 09.8220924359 +33 54 19.189507317           ~ 1 0
5 HD 80869 PM* 09 23 09.8221245648 +33 54 19.186707852   9.13 8.45 12.3   G5 28 0
6 HD 95544 PM* 11 05 18.9813463536 +81 02 21.060634380       8.0   G0 36 1
7 HD 95544b Pl? 11 05 18.9816106229 +81 02 21.062475131           ~ 1 0
8 HD 109286b Pl? 12 33 34.9893644532 +07 16 51.286999904           ~ 1 0
9 HD 109286 * 12 33 34.9893716808 +07 16 51.285719388   9.49 8.77     G5 35 0
10 HD 115954b Pl? 13 19 56.5871784171 +38 22 08.564211194           ~ 1 0
11 HD 115954 PM* 13 19 56.5872020064 +38 22 08.564837700   8.98 8.34     G5V 25 0
12 HD 211403b Pl? 22 15 15.5952301239 +58 16 31.769980111           ~ 1 0
13 HD 211403 PM* 22 15 15.5953644264 +58 16 31.771991568   8.99 8.50     G0 15 0

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2022.12.07-03:22:39

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