A terrestrial planet candidate in a temperate orbit around Proxima Centauri

被引：702

作者：

Anglada-Escude, Guillem ^{[1
]}

Amado, Pedro J. ^{[2
]}

Barnes, John ^{[3
]}

Berdinas, Zaira M. ^{[2
]}

Butler, R. Paul ^{[4
]}

Coleman, Gavin A. L. ^{[1
]}

de la Cueva, Ignacio ^{[5
]}

Dreizler, Stefan ^{[6
]}

Endl, Michael ^{[7
]}

Giesers, Benjamin ^{[6
]}

Jeffers, Sandra V. ^{[6
]}

Jenkins, James S. ^{[8
]}

Jones, Hugh R. A. ^{[9
]}

Kiraga, Marcin ^{[10
]}

Kuerster, Martin ^{[11
]}

Lopez-Gonzalez, Maria J. ^{[2
]}

Marvin, Christopher J. ^{[6
]}

Morales, Nicolas ^{[2
]}

Morin, Julien ^{[12
]}

Nelson, Richard P. ^{[1
]}

Ortiz, Jose L. ^{[2
]}

Ofir, Aviv ^{[13
]}

Paardekooper, Sijme-Jan ^{[1
]}

Reiners, Ansgar ^{[6
]}

Rodriguez, Eloy ^{[2
]}

Rodriguez-Lopez, Cristina ^{[2
]}

Sarmiento, Luis F. ^{[6
]}

Strachan, John P. ^{[1
]}

Tsapras, Yiannis ^{[14
]}

Tuomi, Mikko ^{[9
]}

Zechmeister, Mathias ^{[6
]}

机构：

[1] Queen Mary Univ London, Sch Phys & Astron, 327 Mile End Rd, London E1 4NS, England

[2] CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain

[3] Open Univ, Dept Phys Sci, Walton Hall, Milton Keynes MK7 6AA, Bucks, England

[4] Carnegie Inst Sci, Dept Terr Magnetism, 5241 Broad Branch Rd NW, Washington, DC 20015 USA

[5] Astroimagen, C Abad & Lasierra 58 Bis,6-2, Ibiza 07800, Spain

[6] Univ Gottingen, Inst Astrophys, Friedrich Hund Pl 1, D-37077 Gottingen, Germany

[7] Univ Texas Austin, McDonald Observ, 2515 Speedway,C1400, Austin, TX 78712 USA

[8] Univ Chile, Dept Astron, Camino El Observ 1515, Santiago, Chile

[9] Univ Hertfordshire, Sci & Technol Res Inst, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England

[10] Univ Warsaw Observ, Aleje Ujazdowskie 4, Warsaw, Poland

[11] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany

[12] Univ Montpellier, Lab Univers & Particules Montpellier, Pl E Bataillon CC 72, F-34095 Montpellier 05, France

[13] Weizmann Inst Sci, Dept Earth & Planetary Sci, 234 Herzl St, IL-76100 Rehovot, Israel

[14] Astron Rech Inst, Monchhofstr 12-14, D-69120 Heidelberg, Germany

来源：

NATURE | 2016年 / 536卷 / 7617期

基金：

美国国家科学基金会;

关键词：

TIME-SERIES ANALYSIS; MAIN-SEQUENCE STARS; RADIAL-VELOCITY; HABITABLE ZONE; SOUTHERN STARS; SUPER-EARTH; SPACED DATA; NO PLANET; GJ; 221; SEARCH;

D O I：

10.1038/nature19106

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

At a distance of 1.295 parsecs(1), the red dwarf Proxima Centauri (a Centauri C, GL 551, HIP 70890 or simply Proxima) is the Sun's closest stellar neighbour and one of the best-studied low-mass stars. It has an effective temperature of only around 3,050 kelvin, a luminosity of 0.15 per cent of that of the Sun, a measured radius of 14 per cent of the radius of the Sun2 and a mass of about 12 per cent of the mass of the Sun. Although Proxima is considered a moderately active star, its rotation period is about 83 days (ref. 3) and its quiescent activity levels and X-ray luminosity(4) are comparable to those of the Sun. Here we report observations that reveal the presence of a small planet with a minimum mass of about 1.3 Earth masses orbiting Proxima with a period of approximately 11.2 days at a semi-major-axis distance of around 0.05 astronomical units. Its equilibrium temperature is within the range where water could be liquid on its surface(5).

引用

页码：437 / +

页数：18

共 20 条

[1] Proxima's orbit around α Centauri
Kervella, P.
Thevenin, F.
Lovis, C.
ASTRONOMY & ASTROPHYSICS, 2017, 598
[2] EFFECTS OF PROXIMA CENTAURI ON PLANET FORMATION IN ALPHA CENTAURI
Worth, R.
Sigurdsson, S.
ASTROPHYSICAL JOURNAL, 2016, 831 (02):
[3] A candidate short-period sub-Earth orbiting Proxima Centauri☆
Faria, J. P.
Suarez Mascareno, A.
Figueira, P.
Silva, A. M.
Damasso, M.
Demangeon, O.
Pepe, F.
Santos, N. C.
Rebolo, R.
Cristiani, S.
Adibekyan, V
Alibert, Y.
Allart, R.
Barros, S. C. C.
Cabral, A.
D'Odorico, V
Di Marcantonio, P.
Dumusque, X.
Ehrenreich, D.
Gonzalez Hernandez, J., I
Hara, N.
Lillo-Box, J.
Lo Curto, G.
Lovis, C.
Martins, C. J. A. P.
Megevand, D.
Mehner, A.
Micela, G.
Molaro, P.
Nunes, N. J.
Palle, E.
Poretti, E.
Sousa, S. G.
Sozzetti, A.
Tabernero, H.
Udry, S.
Zapatero Osorio, M. R.
ASTRONOMY & ASTROPHYSICS, 2022, 658
[4] MICROLENSING EVENTS BY PROXIMA CENTAURI IN 2014 AND 2016: OPPORTUNITIES FOR MASS DETERMINATION AND POSSIBLE PLANET DETECTION
Sahu, Kailash C.
Bond, Howard E.
Anderson, Jay
Dominik, Martin
ASTROPHYSICAL JOURNAL, 2014, 782 (02):
[5] STRONG CONSTRAINTS TO THE PUTATIVE PLANET CANDIDATE AROUND VB 10 USING DOPPLER SPECTROSCOPY
Anglada-Escude, Guillem
Shkolnik, Evgenya L.
Weinberger, Alycia J.
Thompson, Ian B.
Osip, David J.
Debes, John H.
ASTROPHYSICAL JOURNAL LETTERS, 2010, 711 (01) : L24 - L29
[6] An Earth-mass Planet in a 1 au Orbit around an Ultracool Dwarf
Shvartzvald, Y.
Yee, J. C.
Novati, S. Calchi
Gould, A.
Lee, C. -U.
Beichman, C.
Bryden, G.
Carey, S.
Gaudi, B. S.
Henderson, C. B.
Zhu, W.
Albrow, M. D.
Cha, S. -M.
Chung, S. -J.
Han, C.
Hwang, K. -H.
Jung, Y. K.
Kim, D. -J.
Kim, H. -W.
Kim, S. -L.
Lee, Y.
Park, B. -G.
Pogge, R. W.
Ryu, Y. -H.
Shin, I. -G.
ASTROPHYSICAL JOURNAL LETTERS, 2017, 840 (01)
[7] K2-99 revisited: a non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant
Smith, A. M. S.
Breton, S. N.
Csizmadia, Sz
Dai, F.
Gandolfi, D.
Garcia, R. A.
Howard, A. W.
Isaacson, H.
Korth, J.
Lam, K. W. F.
Mathur, S.
Nowak, G.
Perez Hernandez, F.
Persson, C. M.
Albrecht, S. H.
Barragan, O.
Cabrera, J.
Cochran, W. D.
Deeg, H. J.
Fridlund, M.
Georgieva, I. Y.
Goffo, E.
Guenther, E. W.
Hatzes, A. P.
Kabath, P.
Livingston, J. H.
Luque, R.
Palle, E.
Redfield, S.
Rodler, F.
Serrano, L. M.
Van Eylen, V.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 510 (04) : 5035 - 5049
[8] A RESOLVED DEBRIS DISK AROUND THE CANDIDATE PLANET-HOSTING STAR HD 95086
Moor, A.
Abraham, P.
Kospal, A.
Szabo, Gy. M.
Apai, D.
Balog, Z.
Csengeri, T.
Grady, C.
Henning, Th.
Juhasz, A.
Kiss, Cs.
Pascucci, I.
Szulagyi, J.
Vavrek, R.
ASTROPHYSICAL JOURNAL LETTERS, 2013, 775 (02)
[9] Characterising planetary systems with SPIRou: Temperate sub-Neptune exoplanet orbiting the nearby fully convective star GJ 1289 and a candidate around GJ 3378
Moutou, C.
Ould-Elhkim, M.
Donati, J. -F
Charpentier, P.
Cadieux, C.
Delfosse, X.
Artigau, E.
Arnold, L.
Baruteau, C.
Carmona, A.
Cook, N. J.
Zuleta, P. Cortes
Doyon, R.
Hebrard, G.
ASTRONOMY & ASTROPHYSICS, 2024, 688
[10] Doppler confirmation of TESS planet candidate TOI-1408.01: grazing transit and likely eccentric orbit
Galazutdinov, G. A.
Baluev, R., V
Valyavin, G.
Aitov, V
Gadelshin, D.
Valeev, A.
Sendzikas, E.
Sokov, E.
Mitiani, G.
Burlakova, T.
Yakunin, I
Antonyuk, K. A.
Vlasyuk, V.
Romanyuk, I
Rzaev, A.
Yushkin, M.
Ivanova, A.
Tavrov, A.
Korablev, O.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2023, 526 (01) : L111 - L115

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