Molecular Gas Clumps from the Destruction of Icy Bodies in the β Pictoris Debris Disk

被引：172

作者：

Dent, W. R. F. ^{[1
]}

Wyatt, M. C. ^{[2
]}

Roberge, A. ^{[3
]}

Augereau, J-C ^{[4
]}

Casassus, S. ^{[5
]}

Corder, S. ^{[1
]}

Greaves, J. S. ^{[6
]}

de Gregorio-Monsalvo, I. ^{[1
,7
]}

Hales, A. ^{[1
]}

Jackson, A. P. ^{[2
,8
]}

Hughes, A. Meredith ^{[9
]}

Lagrange, A-M ^{[4
]}

Matthews, B. ^{[10
,11
,12
]}

Wilner, D. ^{[13
]}

机构：

[1] Atacama Large Millimeter Submillimeter Array ALMA, Santiago Cent Off, Santiago, Chile

[2] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[3] NASA, Exoplanets & Stellar Astrophys Lab, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[4] Univ Grenoble 1, CNRS, Inst Planetol & Astrophys Grenoble, Inst Natl Sci Univers,UMR 5274, F-38041 Grenoble, France

[5] Univ Chile, Dept Astron, Santiago, Chile

[6] Univ St Andrews, Dept Astron, St Andrews, Fife, Scotland

[7] European So Observ, D-85748 Garching, Germany

[8] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA

[9] Wesleyan Univ, Dept Astron, Van Vleck Observ, Middletown, CT 06459 USA

[10] Natl Res Council Canada, Herzberg Astron Program, Victoria, BC V9E 2E7, Canada

[11] Natl Res Council Canada, Astrophys Program, Victoria, BC V9E 2E7, Canada

[12] Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 5C2, Canada

[13] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA

来源：

SCIENCE | 2014年 / 343卷 / 6178期

基金：

英国科学技术设施理事会; 欧洲研究理事会;

关键词：

CIRCUMSTELLAR DISK; COLLISIONS; DUST; CO; VEGA; MYR;

D O I：

10.1126/science.1248726

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：

Many stars are surrounded by disks of dusty debris formed in the collisions of asteroids, comets, and dwarf planets, but is gas also released in such events? Observations at submillimeter wavelengths of the archetypal debris disk around beta Pictoris show that 0.3% of a Moon mass of carbon monoxide orbits in its debris belt. The gas distribution is highly asymmetric, with 30% found in a single clump 85 astronomical units from the star, in a plane closely aligned with the orbit of the inner planet, beta Pictoris b. This gas clump delineates a region of enhanced collisions, either from a mean motion resonance with an unseen giant planet or from the remnants of a collision of Mars-mass planets.

引用

页码：1490 / 1492

页数：3

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