Gas flow and accretion via spiral streamers and circumstellar disks in a young binary protostar

被引：73

作者：

Alves, F. O. ^{[1
]}

Caselli, P. ^{[1
]}

Girart, J. M. ^{[2
,3
]}

Segura-Cox, D. ^{[1
]}

Franco, G. A. P. ^{[4
]}

Schmiedeke, A. ^{[1
]}

Zhao, B. ^{[1
]}

机构：

[1] Max Planck Inst Extraterr Phys, Ctr Astrochem Studies, D-85748 Garching, Germany

[2] CSIC, Inst Ciencies Espai, E-08193 Cerdanyola Del Valles, Catalunya, Spain

[3] Inst Estudis Espacials Catalunya, E-08034 Barcelona, Spain

[4] Univ Fed Minas Gerais, Dept Fis, Inst Ciencias Exatas, BR-30123970 Belo Horizonte, MG, Brazil

来源：

SCIENCE | 2019年 / 366卷 / 6461期

基金：

欧洲研究理事会;

关键词：

SYSTEMS;

D O I：

10.1126/science.aaw3491

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：

The majority of stars are part of gravitationally bound stellar systems, such as binaries. Observations of protobinary systems constrain the conditions that lead to stellar multiplicity and subsequent orbital evolution. We report high-angular resolution observations of the circumbinary disk around [BHB2007] 11, a young binary protostar system. The two protostars are embedded in circumstellar disks that have radii of 2 to 3 astronomical units and probably contain a few Jupiter masses. These systems are surrounded by a complex structure of filaments connecting to the larger circumbinary disk. We also observe accretion and radio jets associated with the protobinary system. The accretion is preferentially onto the lower-mass protostar, consistent with theoretical predictions.

引用

页码：90 / +

页数：20

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