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Twin, Aligned Protoplanetary Disks around the Components of the Young Binary System L1551 IRS5

Published online by Cambridge University Press:  13 May 2016

Jose M. Torrelles ,
Luis F. Rodríguez  and
Guillem Anglada
Jose M. Torrelles
Affiliation:
Institut d'Estudis Espacials de Catalunya (IEEC/CSIC) and Instituto de Ciencias del Espacio (CSIC), Gran Capita 2, 08034 Barcelona, Spain
Luis F. Rodríguez
Affiliation:
Instituto de Astronomía, UNAM, Apdo. Postal 72–3 (Xangari), 58089 Morelia, Mexico
Guillem Anglada
Affiliation:
Instituto de Astrofísica de Andalucía (CSIC), Apdo. Correos 3004, 18080 Granada, Spain

Abstract

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VLA 7 mm continuum observations carried out by Rodríguez et al. (1998) with 0.06″ resolution toward L1551 IRS5 have shown two resolved dust sources. Both sources are elongated with almost the same orientation, similar flux densities, and similar angular sizes, being interpreted by these authors as a system of twin, aligned protoplanetary disks of 10 AU radius around the components of a young binary of 50 AU separation. These protoplanetary disks, the smaller ones ever imaged at mm wavelengths, are about a factor of ten smaller than disks around isolated stars, but have enough mass to form solar systems similar to our own. The fact that the disks are aligned with each other argues in favor for long-lived planetary systems in this binary. We all look forward to the future development of interferometers such as the EVLA, SMA, and ALMA in order to characterize the physical conditions of these associated protoplanetary disks by detecting spatially resolved molecular line emission. With these upcoming interferometers it will be possible to make great strides forward in our knowledge of the star formation processes.

Type
IV. Initial Conditions for Binary Formation and Protobinary Systems
Information
Symposium - International Astronomical Union , Volume 200: The Formation of Binary Stars , 2001 , pp. 132 - 135
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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