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19 April 2024 |
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Infrared and Millimetric Study of the Young Outflow Cepheus E | | A. Moro-Martin
; A. Noriega-Crespo
; S. Molinari
; L. Testi
; J. Cernicharo & A. Sargent
; | | Date: |
5 Mar 2001 | | Subject: | astro-ph | | Affiliation: | Steward Obs., SSC-Caltech, IPAC, Arcetri Obs. CSIC, Caltech | | Abstract: | The Cepheus E outflow has been studied in the mid and far infrared using the ISO CAM and LWS instruments, and at millimetric wavelengths using OVRO. In the near and mid-IR, its morphology is similar to that expected for a jet driven outflow, where the leading bow shocks entrain and accelerate the surrounding molecular gas. As expected, fine structure atomic/ionic emission lines arise from the bow shocks, at both the Mach Disk and the stagnation tip, where J-shocks are dominant. The H2, H2O and CO molecular emission could arise further `downstream’ at the bow shock wings where the shocks (v = 8-35 km/s) are oblique and more likely to be C-type. The 13CO emission arises from entrained molecular gas and a compact high velocity emission is observed, together with an extended low velocity component that almost coincides spatially with the H2 near-IR emission. The millimetric continuum emission shows two sources. We identify one of them with IRAS 23011+6126, postulating is the driver of the Cepheus E outflow; the other, also an embedded source, is likely to be driving one of other outflows observed in the region. | | Source: | arXiv, astro-ph/0103065 | | Services: | Forum | Review | PDF | Favorites | |
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