Infrared and Millimetric Study of the Young Outflow Cepheus E

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.

47 pages, 13 figures

References in corpus (9)

• Far Infrared and Submillimeter Emission from Galactic and Extragalactic Photo-Dissociation Regions
• The Post-Shock Chemical Lifetimes of Outflow Tracers and a Possible New Mechanism to Produce Water Ice Mantles
• Thermal Water Vapor Emission from Shocked Regions in Orion
• Does Infall End Before the Class I Stage?
• Cold H2O and CO ice and gas toward the Galactic Center
• Optical and Near Infrared Study of the Cepheus E outflow, a very low excitation object
• A Molecular Counterpart to the Herbig-Haro 1-2 Flow
• Windows through the Dusty Disks Surrounding the Youngest Low Mass Protostellar Objects
• ISOCAM Molecular Hydrogen Images of the Cep E Outflow

Cited by in corpus (25)

• ISO spectroscopy of gas and dust: from molecular clouds to protoplanetary disks
• Accretion disks in luminous young stellar objects
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds: VI. Perseus Observed with MIPS
• A Spitzer Space Telescope far-infrared spectral atlas of compact sources in the Magellanic Clouds. I. The Large Magellanic Cloud
• HiRes Deconvolved Spitzer Images of 89 Protostellar Jets and Outflows: New Data on Evolution of Outflow Morphology
• Physical structure of the envelopes of intermediate-mass protostars
• First Hot Corino detected around an Isolated Intermediate-Mass Protostar: Cep\,E-mm
• High-pressure, low-abundance water in bipolar outflows. Results from a Herschel-WISH survey
• Is the Cepheus E Outflow driven by a Class 0 Protostar?
• On the nature of outflows in intermediate-mass protostars: a case study of IRAS 20050+2720
• The Optical Proper Motions of HH 7-11 and Cep E (HH 377)
• Deeply embedded objects and shocked molecular hydrogen: The environment of the FU Orionis stars RNO 1B/1C
• Multi-wavelength spectroscopy of the bipolar outflow from Cepheus E
• High-J CO emission in the Cepheus E protostellar outflow observed with SOFIA/GREAT
• The SOFIA Massive (SOMA) Star Formation Survey. III. From Intermediate- to High-Mass Protostars
• Jets and Wide Angle Outflows in Cepheus E: New Evidence from Spitzer
• A sensitive survey for water maser emission towards Bok globules using the Robledo 70m antenna
• Excitation of Molecular Material Near the Young Stellar Object LkHalpha-234 in NGC 7129
• Deuterium and ${}^{15}$N fractionation in N${}_2$H${}^{+}$ during the formation of a Sun-like star
• Spitzer observations of the HH 1/2 system. The discovery of the counterjet
• Molecules in the CepE-mm jet: evidence for shock-driven photochemistry?
• The HIFI spectral survey of AFGL2591 (CHESS). I. Highly excited linear rotor molecules in the high-mass protostellar envelope
• Evolution of the atomic component in protostellar outflows
• Shocked water in the Cep E protostellar outflow
• Proper Motions of Young Stellar Outflows in the Mid-Infrared with Spitzer. II. HH 377/Cep E