Interpreting the proper motions of the HH 34S bowshock
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2002
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| _version_ | 1876447254575841280 |
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| author | J. Cantó |
| author_facet | J. Cantó |
| contents | Interpreting the proper motions of the HH 34S bowshock J. Cantó A. C. Raga P. F. Velázquez E. Masciadri Física, Astronomía y Matemáticas MAIN SEQUENCE STARS: PRE HYDRODYNAMICS ISM: JETS AND OUTFLOWS Reipurth et al. (2002) have obtained very detailed proper motions of theHH 34S bowshock using Hubble Space Telescope (HST) images. We find that theseproper motions can be used to reconstruct the position-dependent shock velocityand the flow velocity ahead of the bowshock. From this excercise, we obtain shockvelocities in the 60 to 120 km s1 range, in qualitative agreement with previousdeterminations based on the analysis of line profiles and line ratios. We also deducethe presence of a 200 km s1 flow directly ahead of HH 34S, extending out to10 on each side of the outflow axis. We interpret this flow as the wake left behindby previous outflow events, and show that a variable ejection velocity gasdynamicjet simulation does reproduce the properties of this flow in a convincing way. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57138213 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.38 |
| format | Artículo científico |
| id | redalyc_57138213 |
| institution | Redalyc |
| language | en |
| publishDate | 2002 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Interpreting the proper motions of the HH 34S bowshock J. Cantó Física, Astronomía y Matemáticas MAIN SEQUENCE STARS: PRE HYDRODYNAMICS ISM: JETS AND OUTFLOWS Interpreting the proper motions of the HH 34S bowshock J. Cantó A. C. Raga P. F. Velázquez E. Masciadri Física, Astronomía y Matemáticas MAIN SEQUENCE STARS: PRE HYDRODYNAMICS ISM: JETS AND OUTFLOWS Reipurth et al. (2002) have obtained very detailed proper motions of theHH 34S bowshock using Hubble Space Telescope (HST) images. We find that theseproper motions can be used to reconstruct the position-dependent shock velocityand the flow velocity ahead of the bowshock. From this excercise, we obtain shockvelocities in the 60 to 120 km s1 range, in qualitative agreement with previousdeterminations based on the analysis of line profiles and line ratios. We also deducethe presence of a 200 km s1 flow directly ahead of HH 34S, extending out to10 on each side of the outflow axis. We interpret this flow as the wake left behindby previous outflow events, and show that a variable ejection velocity gasdynamicjet simulation does reproduce the properties of this flow in a convincing way. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57138213 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.38 |
| title | Interpreting the proper motions of the HH 34S bowshock |
| topic | Física, Astronomía y Matemáticas MAIN SEQUENCE STARS: PRE HYDRODYNAMICS ISM: JETS AND OUTFLOWS |
| url | https://www.redalyc.org/articulo.oa?id=57138213 |