HIGH-VELOCITY FEATURES IN THE ORION NEBULA

Citation
Cr. Odell et al., HIGH-VELOCITY FEATURES IN THE ORION NEBULA, The Astronomical journal, 114(5), 1997, pp. 2016-2028
Citations number
53
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
00046256
Volume
114
Issue
5
Year of publication
1997
Pages
2016 - 2028
Database
ISI
SICI code
0004-6256(1997)114:5<2016:HFITON>2.0.ZU;2-E
Abstract
We have surveyed the inner 7' of the Orion Nebula for high velocity ou tflows with Fabry-Perot images in [S II] and [O III]. The new survey r ecovers all known HH objects in the region, and also reveals a number of new high velocity flows. New flows include (1) jets over an arcminu te in length that extend from the center of the nebula to HH 202 in th e noah and HH 203-204 in the south; (2) an east-west jet in the center of the nebula that aligns with the elliptical HH object HH 269 to the west; (3) a second blueshifted flow that moves eastward from the east -west jet and appears as a series of [O III] arcs in HST images; (4) a blueshifted HH object south of HH 202 that may be driven by a nearby H-2 jet; (5) a redshifted ''microjet'' that emerges northward from the proplyd 170-337; (6) a chain of redshifted [O In] arcs that may origi nate from the proplyd 159-350; (7) redshifted and blueshifted emission from several other proplyds; (8) an extended east-west low surface br ightness region of blueshifted [O III] emission 65 '' south of theta(1 )C Ori which may be associated with the cavity generated by the intens e stellar wind from theta(1)C Ori; and (9) blueshifted [S II] emission along two features that originate from the BN/IRc2 region. (C) 1997 A merican Astronomical Society.