J/AJ/124/445ivo://CDS.VizieR/J/AJ/124/445doi:10.26093/cds/vizier.51240445CDSDoi T.O'dell C.R.Hartigan P.2023-04-06T16:50:53Z2005-06-09T21:02:13ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frpre-main-sequence-starsThe proper motions (tangential velocities) of Herbig-Haro (HH) objects in the Orion Nebula were measured with a +/-10km/s accuracy using the Hubble Space Telescope Wide Field Planetary Camera 2 images in [S II], [N II], H, and [O III], taken 4-6yr apart. Seven HH flows in the outer region as well as seven HH objects in the inner region of the BN-KL complex were identified. The H2 finger system was confirmed to be created by an explosive event that took place approximately 1000 yr ago. We found a new HH flow toward the northwest originating from the vicinity of OMC-1S, which may be a part of the low-velocity bipolar flows centered at FIR 4. The proper motion of HH 202 was also measured with high accuracy for the first time. The proper-motion vectors of HH 202 and HH 203/204 are aligned well with their projected symmetric axis, which may indicate that they emanated from the same source. The proper-motion measurements in various emission lines provide generally the same results in the wide range of velocity from 20 to 400km/s, as expected for shocks in a steady state.2002AJ....124..445Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/124/445CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/111/846 : Orion HST survey (O'Dell+ 1996)J/AJ/127/3456 : Internal velocities in the Orion Nebula (Doi+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/124/445https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/124/445http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/124/445https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/124/445https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/124/445http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/124/445GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/124/445/table2 (Tangential velocities in the Orion Nebula)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/124/445/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/124/445/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/124/445/table2?GETtext/xml+votable180.050000true83.814167-5.3444440.0055555555555555566/21439https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/124/445?format=asciiOpticaldefaultJ/AJ/124/445/table1HST image datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpoch1First epoch designationcharDt1? Time interval between Epoch1 and second epoch GO8121NW (2000 March 30)yrfloatnullableFilt1Filters of the second epoch GO8121NWcharDt2? Time interval between Epoch1 and second epoch GO8121SE (2000 September 13)yrfloatnullableFilt2Filters of the second epoch GO8121SEcharJ/AJ/124/445/table2Tangential velocities in the Orion NebularecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRegionRegion designationchar[OW94]Feature designation (1)charSourceSource designation (HH NNN)charFiltFiltercharVTTangential velocitykm/sintPA? Position angledegintnullableFig? Figure numberintnullableEpoch2Second epoch designation (see table 1)charEpoch1First epoch designation (see table 1)charComComments (2)char_RAPosition (derived from the [OW94] name) (right ascension part)degpos.eq.ra;meta.main_DEPosition (derived from the [OW94] name) (declination part)degpos.eq.dec;meta.main