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| Main Author: | |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2019
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| Online Access: | https://www.redalyc.org/articulo.oa?id=57171616012 https://www.redalyc.org/journal/571/57171616012/ https://www.redalyc.org/journal/571/57171616012/html/ https://www.redalyc.org/journal/571/57171616012/57171616012.epub https://www.redalyc.org/journal/571/57171616012/movil |
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Table of Contents:
- The HH34 jet/counterjet system at 1.5 and 4.5µm A. C. Raga B. Reipurth A. Noriega-Crespo Física, Astronomía y Matemáticas ISM stars winds Herbig outflows We present a (previously unpublished) 1.5 µm archival HST image of the HH 34 Herbig-Haro jet, in which the northern counterjet is seen at an unprecedented angular resolution of ≈ 0.1′′ (this counterjet had only been imaged previously at lower resolution with Spitzer). The jet/counterjet structure observed in this image shows evidence of low-amplitude, point-symmetric deviations from the outflow axis, indicating the presence of a precession in the ejection direction. We use the ratios between the 1.5 and 4.5 µm intensities of the emitting knots (from the HST image and from a previously published 4.5 µm Spitzer image) to obtain an estimate of the spatial dependence of the optical extinction to the HH 34 jet/counterjet system. We find evidence for extinction from a central, dense core surrounding the outflow source and from a more extended region in the foreground of the HH 34 counterjet. 2019 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57171616012 https://www.redalyc.org/journal/571/57171616012/ https://www.redalyc.org/journal/571/57171616012/html/ https://www.redalyc.org/journal/571/57171616012/57171616012.epub https://www.redalyc.org/journal/571/57171616012/movil 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.1 Vol.55