SIMBAD references

2002ApJ...570..222G - Astrophys. J., 570, 222-230 (2002/May-1)

MERLIN radio detection of an interaction zone within a binary Orion proplyd system.

GRAHAM M.F., MEABURN J., GARRINGTON S.T., O'BRIEN T.J., HENNEY W.J. and O'DELL C.R.

Abstract (from CDS):

Presented here are high angular resolution MERLIN 5 GHz (6 cm) continuum observations of the binary proplyd system LV 1 in the Orion nebula, which consists of proplyd 168-326 SE and its binary proplyd companion 168-326 NW (separation 0".4). Accurate astrometric alignment allows a detailed comparison between these data and published Hubble Space Telescope (HST) PC Hα and [O III] λ5007 images. Thermal radio sources coincide with the two proplyds and originate in the ionized photoevaporating flows seen in the optical emission lines. Flow velocities of ~50 km.s–1 from the ionized proplyd surfaces and ≥100 km.s–1 from a possible microjet have been detected using the Manchester echelle spectrometer. A third radio source is found to coincide with a region of extended, high-excitation, optical line emission that lies between the binary proplyds 168-326 SE/326 NW. This is modeled as a bow shock caused by the collision of the photoevaporating flows from the two proplyds. Both a thermal and a nonthermal origin for the radio emission in this collision zone are considered.

Abstract Copyright:

Journal keyword(s): Stars: Circumstellar Matter - ISM: H II Regions - ISM: Individual: Name: Orion Nebula - Radio Continuum: ISM - Stars: Formation

Simbad objects: 19

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2020.02.25-23:27:44

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