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Multiple Protostars, Jets, and the Origin of Brown Dwarfs1

Published online by Cambridge University Press:  22 February 2018

Cathie Clarke ,
Bo Reipurth  and
Eduardo Delgado-Donate
Cathie Clarke
Affiliation:
Drs. Reipurth and Clarke each gave an invited talk at the Colloquium. They have, however agreed, with the editors’ consent, to publish their contributions in a single paper of somewhat greater length than the others that derive from invited talks Institute of Astronomy, University of Cambridge, UK
Bo Reipurth
Affiliation:
Drs. Reipurth and Clarke each gave an invited talk at the Colloquium. They have, however agreed, with the editors’ consent, to publish their contributions in a single paper of somewhat greater length than the others that derive from invited talks Institute for Astronomy, University of Hawaii, Honolulu, USA
Eduardo Delgado-Donate
Affiliation:
Institute of Astronomy, University of Cambridge, UK Stockholm Observatory, Stockholm, Sweden

Abstract

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The observation that young stars are clustered in few body non-hierarchical multiple systems at very young ages has profound consequences for our understanding of the formation of stars, binaries and the disks and planets that may surround them. In this chapter we review theoretical progress made over the last decade in modeling the break up of these natal clusters and discuss a range of observational predictions that arise from these models, relating to the kinematics, binary statistics and possession of disks of both stars and brown dwarfs. We also argue that one of the most spectacular manifestations of dynamical interactions in young multiple systems should be the formation of giant Herbig-Haro flows, and present observational evidence that may be interpreted in this light.

Resumen

Resumen

El hecho de que las estrellas jóvenes se agrupen en sistemas múltiples de pocos cuerpos y no-jerárquicos tiene profundas consecuencias para la comprensión de la formación de las estrellas, de las binarias y de los planetas que pueden circundarlas. En este trabajo, reseñamos los avances teóricos que en los últimos diez años se han hecho para modelar el rompimiento de estos cúmulos madre, y discutimos una serie de predicciones observacionales que surgen de los modelos, en relación con la cinemática, la estadística de las binarias, y la existencia de discos en estrellas y en enanas marrones. Argumentamos que una de las manifestaciones más espectaculares de las interacciones dinámicas en estrellas múltiples jóvenes debería ser la formación de flujos Herbig-Haro gigantescos, y presentamos evidencia observacional que puede ser interpretada en este sentido.

Keywords

BinariesClose — ISMHerbig-Haro Objects — MethodsN-Body Simulations — StarsFormation — StarsLow-Mass, Brown Dwarfs
Type
Astrophysical Processes of Multiple Stars in Clusters
Information
International Astronomical Union Colloquium , Volume 191: The Environment and Evolution of Double and Multiple Stars , August 2004 , pp. 184 - 194
Copyright
Copyright © Instituto de Astronomia – Mexico 2004

Footnotes

1

Drs. Reipurth and Clarke each gave an invited talk at the Colloquium. They have, however agreed, with the editors’ consent, to publish their contributions in a single paper of somewhat greater length than the others that derive from invited talks.

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