A Jovian analogue orbiting a white dwarf star

被引：63

作者：

Blackman, J. W. ^{[1
,2
,3
]}

Beaulieu, J. P. ^{[1
,2
,3
]}

Bennett, D. P. ^{[4
,5
]}

Danielski, C. ^{[2
,3
,6
,7
]}

Alard, C. ^{[2
,3
]}

Cole, A. A. ^{[1
]}

Vandorou, A. ^{[1
]}

Ranc, C. ^{[4
]}

Terry, S. K. ^{[8
]}

Bhattacharya, A. ^{[4
,5
]}

Bond, I ^{[9
]}

Bachelet, E. ^{[10
]}

Veras, D. ^{[11
,12
,13
]}

Koshimoto, N. ^{[4
,14
]}

Batista, V ^{[2
,3
]}

Marquette, J. B. ^{[15
]}

机构：

[1] Univ Tasmania, Sch Nat Sci, Hobart, Tas, Australia

[2] Sorbonne Univ, UPMC Univ Paris 6, Paris, France

[3] Inst Astrophys Paris, CNRS, UMR 7095, Paris, France

[4] NASA Goddard Space Flight Ctr, Lab Exoplanets & Stellar Astrophys, Greenbelt, MD USA

[5] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[6] Inst Astrofis Andalucia IAA, CSIC, Granada, Spain

[7] UCL Ctr Space Exochem Data, Didcot, Oxon, England

[8] Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA

[9] Massey Univ, Inst Nat & Math Sci, Auckland, New Zealand

[10] Las Cumbres Observ, Goleta, CA USA

[11] Univ Warwick, Ctr Exoplanets & Habitabil, Coventry, W Midlands, England

[12] Univ Warwick, Dept Phys, Coventry, W Midlands, England

[13] Univ Warwick, Ctr Space Domain Awareness, Coventry, W Midlands, England

[14] Univ Tokyo, Grad Sch Sci, Dept Astron, Tokyo, Japan

[15] Univ Bordeaux, Lab Astrophys Bordeaux, Pessac, France

来源：

NATURE | 2021年 / 598卷 / 7880期

关键词：

JUPITER/SATURN ANALOG; GIANT PLANET;

D O I：

10.1038/s41586-021-03869-6

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：

Studies(1,2) have shown that the remnants of destroyed planets and debris-disk planetesimals can survive the volatile evolution of their host stars into white dwarfs(3,4), but few intact planetary bodies around white dwarfs have been detected(5-8). Simulations predict(9-11) that planets in Jupiter-like orbits around stars of less than or similar to 8 M-circle dot; (solar mass) avoid being destroyed by the strong tidal forces of their stellar host, but as yet, there has been no observational confirmation of such a survivor. Here we report the non-detection of a main-sequence lens star in the microlensing event MOA-2010-BLG-477Lb(12) using near-infrared observations from the Keck Observatory. We determine that this system contains a 0.53 +/- 0.11 M-circle dot white-dwarf host orbited by a 1.4 +/- 0.3 Jupiter-mass planet with a separation on the plane of the sky of 2.8 +/- 0.5 astronomical units, which implies a semi-major axis larger than this. This system is evidence that planets around white dwarfs can survive the giant and asymptotic giant phases of their host's evolution, and supports the prediction that more than half of white dwarfs have Jovian planetary companions(13). Located at approximately 2.0 kiloparsecs towards the centre of our Galaxy, it is likely to represent an analogue to the end stages of the Sun and Jupiter in our own Solar System.

引用

页码：272 / +

页数：15

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