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We study archival HST [S II] 6716+30 and Hα images of the HH 34 outflow, taken in 1998.71 and in 2007.83. The ~9 yr time baseline and the high angular resolution of these observations allow us to carry out a detailed proper-motion study. We determine the proper motions of the substructure of the HH 34S bow shock (from the [S II] and Hα frames) and of the aligned knots within ~30'' from the outflow source (only from the [S II] frames). We find that the present-day motions of the knots along the HH 34 jet are approximately ballistic, and that these motions directly imply the formation of a major mass concentration in ~900 yr, at a position similar to the one of the present-day HH 34S bow shock. In other words, we find that the knots along the HH 34 jet will merge to form a more massive structure, possibly resembling HH 34S.

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Caltech Authors  


Raga, A. C. -  Noriega -  Crespo, A. -  Rodríguez -  González, A. -  Lora, V. -  Stapelfeldt, K. R. -  Carey, S. J. - 

Id.: 55259275

Versión: 1.0

Estado: Final

Tipo:  application/pdf -  image/png - 

Tipo de recurso: Article  -  PeerReviewed  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

Formatos:  application/pdf -  image/png - 

Requerimientos técnicos:  Browser: Any - 

Relación: [References] http://resolver.caltech.edu/CaltechAUTHORS:20120504-094304260
[References] http://authors.library.caltech.edu/31297/

Fecha de contribución: 27-dic-2012


* Raga, A. C. and Noriega-Crespo, A. and Rodríguez-González, A. and Lora, V. and Stapelfeldt, K. R. and Carey, S. J. (2012) The Kinematics of HH 34 from HST Images with a Nine-year Time Baseline. Astrophysical Journal, 748 (2). p. 103. ISSN 0004-637X http://resolver.caltech.edu/CaltechAUTHORS:20120504-094304260

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