Theory and observations of a jet in the _ orionis region: HH 444
Fuente:
Redalyc
Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2001
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1876428075079565312 |
|---|---|
| author | J. A. López |
| author_facet | J. A. López |
| contents | Theory and observations of a jet in the _ orionis region: HH 444 J. A. López J. Meaburn A. C. Raga L. López Martin Física, Astronomía y Matemáticas SHOCK WAVES HYDRODYNAMICS ISM: JETS AND OUTFLOWS TECHNIQUES: SPECTROSCOPIC ISM: INDIVIDUAL OBJECTS: HH 444 The discovery of a system of Herbig{Haro objects ejected by young, low massstars in the Orionis region (Reipurth et al. 1998) has given rise to models of thephotoionization of a neutral jet by an external source.We present long{slit spectra of high spectral resolution of HH 444 and nu-merical simulations for this Herbig{Haro object using \yguazu", a 3D gasdynamic+radiative transfer code (Raga et al. 1999). We nd that a velocity prole in thejet beam is necessary to explain the observed accelaration in the position{velocitydiagram of the HH jet. We also need also assume a non{zero opening angle at thebase of the jet to explain the decreasing H intensity at increasing distances fromthe source and a variable ejection velocity to reproduce the well separated knotsobserved along the jet. 2001 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57101018 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) Vol.10 |
| format | Artículo científico |
| id | redalyc_57101018 |
| institution | Redalyc |
| language | en |
| publishDate | 2001 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Theory and observations of a jet in the _ orionis region: HH 444 J. A. López Física, Astronomía y Matemáticas SHOCK WAVES HYDRODYNAMICS ISM: JETS AND OUTFLOWS TECHNIQUES: SPECTROSCOPIC ISM: INDIVIDUAL OBJECTS: HH 444 Theory and observations of a jet in the _ orionis region: HH 444 J. A. López J. Meaburn A. C. Raga L. López Martin Física, Astronomía y Matemáticas SHOCK WAVES HYDRODYNAMICS ISM: JETS AND OUTFLOWS TECHNIQUES: SPECTROSCOPIC ISM: INDIVIDUAL OBJECTS: HH 444 The discovery of a system of Herbig{Haro objects ejected by young, low massstars in the Orionis region (Reipurth et al. 1998) has given rise to models of thephotoionization of a neutral jet by an external source.We present long{slit spectra of high spectral resolution of HH 444 and nu-merical simulations for this Herbig{Haro object using \yguazu", a 3D gasdynamic+radiative transfer code (Raga et al. 1999). We nd that a velocity prole in thejet beam is necessary to explain the observed accelaration in the position{velocitydiagram of the HH jet. We also need also assume a non{zero opening angle at thebase of the jet to explain the decreasing H intensity at increasing distances fromthe source and a variable ejection velocity to reproduce the well separated knotsobserved along the jet. 2001 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57101018 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) Vol.10 |
| title | Theory and observations of a jet in the _ orionis region: HH 444 |
| topic | Física, Astronomía y Matemáticas SHOCK WAVES HYDRODYNAMICS ISM: JETS AND OUTFLOWS TECHNIQUES: SPECTROSCOPIC ISM: INDIVIDUAL OBJECTS: HH 444 |
| url | https://www.redalyc.org/articulo.oa?id=57101018 |