NICMOS 2 micron continuum and H2 images of OMC-1 Stolovy, S en_US Burton, Michael en_US Erickson, E en_US Kaufman, Michael en_US Chrysostomou, A en_US Young, E en_US Colgan, Sean en_US Axon, D en_US Thompson, Roger en_US Rieke, M en_US Schneider, G en_US 2021-11-25T13:06:56Z 2021-11-25T13:06:56Z 1998 en_US
dc.description.abstract The core of OMC-1 has been imaged with the Near-Infrared Camera and Multiobject Spectrometer (NICMOS) on board the Hubble Space Telescope at 0 2 resolution in 1% filters at 2.12 and 2.15 μm, revealing intricate structures in both continuum and shocked molecular hydrogen line emission. Numerous H -emitting clumps surrounding the BN/KL region have been resolved for the first time, several of which exhibit prototypical bow-shock morphologies with -shaped tips. We interpret these to be lower excitation analogs of similar structures 2 northwest of the core observed with ground-based telescopes. Many of the elongated H structures and bow-shock features appear to radiate outward from a region within a few arcseconds of radio source I, which suggests that the H energetics are dominated by one or more outflow sources in this region. However, the orientations of some features are unrelated to this apparent outflow pattern. The deeply embedded, suspected outflow source I remains undetected at 2 μm, although two faint new continuum sources have been detected within 1 of it. The newly resolved H features with bow-shock morphologies are located in regions previously identified as bow shocks by highly blueshifted components in their line profiles. In contrast, regions of H emission that are diffuse in the NICMOS image have broad, smooth line profiles. Several continuum features have an arclike appearance, which suggests interactions of winds with the ambient medium. At least 40 stellar or protostellar continuum sources have been detected, including at least one proplyd and four pairs of binary stars. en_US
dc.language English
dc.language.iso EN en_US
dc.rights CC BY-NC-ND 3.0 en_US
dc.rights.uri en_US
dc.source Legacy MARC en_US
dc.title NICMOS 2 micron continuum and H2 images of OMC-1 en_US
dc.type Journal Article en
dcterms.accessRights metadata only access
dspace.entity.type Publication en_US
unsw.identifier.doiPublisher en_US
unsw.relation.faculty Science
unsw.relation.faculty UNSW Canberra
unsw.relation.ispartofissue 2 en_US
unsw.relation.ispartofjournal Astrophysical Journal Letters en_US
unsw.relation.ispartofpagefrompageto L151-L155 en_US
unsw.relation.ispartofvolume 492 en_US
unsw.relation.originalPublicationAffiliation Stolovy, S en_US
unsw.relation.originalPublicationAffiliation Burton, Michael, Physics, Faculty of Science, UNSW en_US
unsw.relation.originalPublicationAffiliation Erickson, E en_US
unsw.relation.originalPublicationAffiliation Kaufman, Michael en_US
unsw.relation.originalPublicationAffiliation Chrysostomou, A en_US
unsw.relation.originalPublicationAffiliation Young, E, Physical, Environmental & Mathematical Sciences, Australian Defence Force Academy, UNSW en_US
unsw.relation.originalPublicationAffiliation Colgan, Sean en_US
unsw.relation.originalPublicationAffiliation Axon, D en_US
unsw.relation.originalPublicationAffiliation Thompson, Roger, Humanities & Social Sciences, Australian Defence Force Academy, UNSW en_US
unsw.relation.originalPublicationAffiliation Rieke, M en_US
unsw.relation.originalPublicationAffiliation Schneider, G en_US School of Physics * School of Science * School of Humanities and Social Sciences *
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