The HARPS search for southern extra-solar planets XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions

被引：51

作者：

Udry, S. ^{[1
]}

Dumusque, X. ^{[1
]}

Lovis, C. ^{[1
]}

Segransan, D. ^{[1
]}

Diaz, R. F. ^{[1
]}

Benz, W. ^{[2
]}

Bouchy, F. ^{[1
,3
]}

Coffinet, A. ^{[1
]}

Lo Curto, G. ^{[4
]}

Mayor, M. ^{[1
]}

Mordasini, C. ^{[2
]}

Motalebi, F. ^{[1
]}

Pepe, F. ^{[1
]}

Queloz, D. ^{[1
]}

Santos, N. C. ^{[5
,6
]}

Wyttenbach, A. ^{[1
]}

Alonso, R. ^{[7
]}

Cameron, A. Collier ^{[8
]}

Deleuil, M. ^{[3
]}

Figueira, P. ^{[5
]}

Gillon, M. ^{[9
]}

Moutou, C. ^{[3
,10
]}

Pollacco, D. ^{[11
]}

Pompei, E. ^{[4
]}

机构：

[1] Univ Geneva, Observ Astron, 51 Ch Maillettes, CH-1290 Versoix, Switzerland

[2] Univ Bern, Phys Inst, Silderstr 5, CH-3012 Bern, Switzerland

[3] Aix Marseille Univ, LAM, CNRS, UMR 7326, F-13388 Marseille, France

[4] European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany

[5] Univ Porto, Inst Astrofis & Ciencias Espaco, CAUP, Rua Estrelas, P-4150762 Porto, Portugal

[6] Univ Porto, Fac Ciencias, Dept Fis & Astron, Rua Campo Alegre, P-4169007 Porto, Portugal

[7] Inst Astrofis Canarias, Tenerife 38025, Spain

[8] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[9] Univ Liege, Inst Astrophys & Geophys, Allee 6 Aout 17,Bat B5C, B-4000 Liege, Belgium

[10] Canada France Hawaii Telescope Corp, Kamuela, HI 96743 USA

[11] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

来源：

ASTRONOMY & ASTROPHYSICS | 2019年 / 622卷

基金：

瑞士国家科学基金会;

关键词：

planetary systems; techniques: radial velocities; techniques: spectroscopic; methods: data analysis; stars: general; CORALIE SURVEY; SHORT-PERIOD; FLUX MEASUREMENTS; VELOCITY; PERTURBATIONS; SPECTROGRAPH; VALIDATION; EXOPLANET; ROTATION; STARS;

D O I：

10.1051/0004-6361/201731173

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Context. We present radial-velocity measurements of eight stars observed with the HARPS Echelle spectrograph mounted on the 3.6-m telescope in La Silla (ESO, Chile). Data span more than ten years and highlight the long-term stability of the instrument. Aims. We search for potential planets orbiting HD20003, HD20781, HD21693, HD31527, HD45184, HD51608, HD134060 and HD136352 to increase the number of known planetary systems and thus better constrain exoplanet statistics. Methods. After a preliminary phase looking for signals using generalized Lomb-Scargle periodograms, we perform a careful analysis of all signals to separate bona-fide planets from signals induced by stellar activity and instrumental systematics. We finally secure the detection of all planets using the efficient MCMC available on the Data and Analysis Center for Exoplanets (DACE web-platform), using model comparison whenever necessary. Results. In total, we report the detection of twenty new super-Earth to Neptune-mass planets, with minimum masses ranging from 2 to 30 M-Earth and periods ranging from 3 to 1300 days, in multiple systems with two to four planets. Adding CORALIE and HARPS measurements of HD20782 to the already published data, we also improve the characterization of the extremely eccentric Jupiter orbiting this visual companion of HD20781.

引用

页数：29

共 25 条

[1] The HARPS search for southern extra-solar planets XXXII. New multi-planet systems in the HARPS volume limited sample: a super-Earth and a Neptune in the habitable zone
Lo Curto, G.
Mayor, M.
Benz, W.
Bouchy, F.
Hebrard, G.
Lovis, C.
Moutou, C.
Naef, D.
Pepe, F.
Queloz, D.
Santos, N. C.
Segransan, D.
Udry, S.
ASTRONOMY & ASTROPHYSICS, 2013, 551
[2] The HARPS search for southern extra-solar planets XVII. Super-Earth and Neptune-mass planets in multiple planet systems HD 47 186 and HD 181 433
Bouchy, F.
Mayor, M.
Lovis, C.
Udry, S.
Benz, W.
Bertaux, J. -L.
Delfosse, X.
Mordasini, C.
Pepe, F.
Queloz, D.
Segransan, D.
ASTRONOMY & ASTROPHYSICS, 2009, 496 (02) : 527 - 531
[3] The HARPS search for southern extra-solar planets XXII. Multiple planet systems from the HARPS volume limited sample
Lo Curto, G.
Mayor, M.
Benz, W.
Bouchy, F.
Lovis, C.
Moutou, C.
Naef, D.
Pepe, F.
Queloz, D.
Santos, N. C.
Segransan, D.
Udry, S.
ASTRONOMY & ASTROPHYSICS, 2010, 512
[4] The HARPS search for southern extra-solar planets XLIII. A compact system of four super-Earth planets orbiting HD 215152
Delisle, J. -B.
Segransan, D.
Dumusque, X.
Diaz, R. F.
Bouchy, F.
Lovis, C.
Pepe, F.
Udry, S.
Alonso, R.
Benz, W.
Coffinet, A.
Cameron, A. Collier
Deleuil, M.
Figueira, P.
Gillon, M.
Lo Curto, G.
Mayor, M.
Mordasini, C.
Motalebi, F.
Moutou, C.
Pollacco, D.
Pompei, E.
Queloz, D.
Santos, N. C.
Wyttenbach, A.
ASTRONOMY & ASTROPHYSICS, 2018, 614
[5] The HARPS search for southern extra-solar planets XVIII. An Earth-mass planet in the GJ 581 planetary system
Mayor, M.
Bonfils, X.
Forveille, T.
Delfosse, X.
Udry, S.
Bertaux, J. -L.
Beust, H.
Bouchy, F.
Lovis, C.
Pepe, F.
Perrier, C.
Queloz, D.
Santos, N. C.
ASTRONOMY & ASTROPHYSICS, 2009, 507 (01) : 487 - 494
[6] The HARPS search for southern extra-solar planets XIV. Gl 176b, a super-Earth rather than a Neptune, and at a different period
Forveille, T.
Bonfils, X.
Delfosse, X.
Gillon, M.
Udry, S.
Bouchy, F.
Lovis, C.
Mayor, M.
Pepe, F.
Perrier, C.
Queloz, D.
Santos, N.
Bertaux, J. -L.
ASTRONOMY & ASTROPHYSICS, 2009, 493 (02) : 645 - 650
[7] The HARPS search for southern extra-solar planets XXIV. Companions to HD 85390, HD 90156, and HD 103197: a Neptune analog and two intermediate-mass planets
Mordasini, C.
Mayor, M.
Udry, S.
Lovis, C.
Segransan, D.
Benz, W.
Bertaux, J. -L.
Bouchy, F.
Lo Curto, G.
Moutou, C.
Naef, D.
Pepe, F.
Queloz, D.
Santos, N. C.
ASTRONOMY & ASTROPHYSICS, 2011, 526
[8] The HARPS search for southern extra-solar planets XXVII. Seven new planetary systems
Moutou, C.
Mayor, M.
Lo Curto, G.
Segransan, D.
Udry, S.
Bouchy, F.
Benz, W.
Lovis, C.
Naef, D.
Pepe, F.
Queloz, D.
Santos, N. C.
Sousa, S. G.
ASTRONOMY & ASTROPHYSICS, 2011, 527
[9] The HARPS search for southern extra-solar planets - XLV. Two Neptune mass planets orbiting HD13808: a study of stellar activity modelling's impact on planet detection
Ahrer, E.
Queloz, D.
Rajpaul, V. M.
Segransan, D.
Bouchy, F.
Hall, R.
Handley, W.
Lovis, C.
Mayor, M.
Mortier, A.
Pepe, F.
Thompson, S.
Udry, S.
Unger, N.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2021, 503 (01) : 1248 - 1263
[10] The HARPS search for southern extra-solar planets XXXIV. A planetary system around the nearby M dwarf GJ 163, with a super-Earth possibly in the habitable zone
Bonfils, X.
Lo Curto, G.
Correia, A. C. M.
Laskar, J.
Udry, S.
Delfosse, X.
Forveille, T.
Astudillo-Defru, N.
Benz, W.
Bouchy, F.
Gillon, M.
Hebrard, G.
Lovis, C.
Mayor, M.
Moutou, C.
Naef, D.
Neves, V.
Pepe, F.
Perrier, C.
Queloz, D.
Santos, N. C.
Segransan, D.
ASTRONOMY & ASTROPHYSICS, 2013, 556

← 1 2 3 →