J/ApJ/918/27ivo://CDS.VizieR/J/ApJ/918/27doi:10.26093/cds/vizier.19180027CDSMendez-delgado J.E.Henney W.J.Esteban C.Garcia-Rojas J.,Mesa-Delgado A.Arellano-Cordova K.Z.2023-03-29T13:18:45Z2023-02-27T08:35:30ZCDS support team

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

cds-question@unistra.frvisible-astronomyspectroscopystar-forming-regionsinterstellar-mediumh-ii-regionsWe analyze the physical conditions, chemical composition, and other properties of the photoionized Herbig-Haro (HH) object HH 204 through Very Large Telescope echelle spectroscopy and Hubble Space Telescope imaging. We kinematically isolate the high-velocity emission of HH 204 from the emission of the background nebula and study the subarcsecond distribution of physical conditions and ionic abundances across the HH object. We find that low- and intermediate-ionization emission arises exclusively from gas at photoionization equilibrium temperatures, whereas the weak high-ionization emission from HH 204 shows a significant contribution from higher-temperature shock-excited gas. We separately derive the ionic abundances of HH 204, the emission of the Orion Nebula, and the fainter diffuse blue layer. In HH 204, the O^+^ abundance determined from collisional excited lines matches the one based on recombination lines, while the O^2+^ abundance is very low, so that the oxygen abundance discrepancy is zero. The ionic abundances of Ni and Fe in HH 204 have similar ionization and depletion patterns, with total abundances that are a factor of 3.5 higher than in the rest of the Orion Nebula due to dust destruction in the bow shock. We show that a failure to resolve the kinematic components in our spectra would lead to significant error in the determination of chemical abundances (for instance, a 40% underestimate of O), mainly due to incorrect estimation of the electron density.2021ApJ...918...27Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/918/27CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)VI/64 : Recombination line intensities for hydrogenic ions (Storey+ 1995)V/104 : General Catalogue of Herbig-Haro Objects (Reipurth+, 1999)VI/141 : Nebular [OIII] collision strengths - SSB (Storey+, 2014)VI/150 : Recombination coefficients for O II lines - SSB2 (Storey+, 2017)J/AJ/111/846 : Orion HST survey (O'Dell+ 1996)J/A+AS/116/573 : Transitions for FeIII (Quinet 1996)J/A+AS/119/99 : [Ni I] & [Ni II] transition probabilities (Quinet+, 1996)J/A+AS/119/523 : IRON project XVIII. Fe III data (Zhang 1996)J/A+AS/126/373 : IRON Project XXVII. Fe IV collision strengths (Zhang+ 1997)J/A+AS/142/85 : Recombination coefficients for C II lines (Davey+, 2000)J/A+A/365/268 : IRON Project. XLVII. Ni III (Bautista, 2001)J/AJ/124/445 : Internal velocities in Orion Nebula (Doi+, 2002)J/ApJ/573/366 : Infrared photometry of Trapezium cluster (Muench+, 2002)J/AJ/125/277 : High proper motions in central Orion nebula (O'dell+, 2003)J/A+A/418/363 : Effective collision strengths for Cl II (Tayal+, 2004)J/A+A/420/763 : Electron impact excitation of NiII (Bautista+, 2004)J/AJ/127/3456 : Internal velocities in the Orion Nebula (Doi+, 2004)J/MNRAS/362/301 : Spectrophot. of the HII region S311 (Garcia-Rojas+, 2005)J/MNRAS/368/253 : Faint em. lines in M16, M20, NGC3603 (Garcia-Rojas+, 2006)J/ApJ/644/1006 : HH 529 spectroscopy (Blagrave+, 2006)J/A+A/469/1203 : IRON project LXIV (Melendez+, 2007)J/MNRAS/391/1828 : FeIV energy levels & transition prob. (Fischer+, 2008)J/MNRAS/395/855 : Spectroscopy (310-1040nm) of HH 202 (Mesa-Delgado+, 2009)J/ApJS/188/32 : Breit-Pauli transition probabilities for SII (Tayal+, 2010)J/ApJ/780/110 : SIII collision strengths (Grieve+, 2014)J/A+A/565/A100 : NGC 288 hot horizontal branch stars abund. (Moehler+, 2014)J/A+A/568/A9 : 300-2500nm flux calibration reference sp. (Moehler+, 2014)J/ApJ/808/174 : FeII radiative transition rates (Bautista+, 2015)J/AJ/150/108 : Spectroscopy and HST imaging in ONC (O'Dell+, 2015)J/ApJ/814/52 : 3600-24700{AA} deep X-shooter sp. of HH 1 (Giannini+, 2015)J/ApJS/229/34 : Preionization in radiative shocks (Sutherland+, 2017)J/ApJ/864/136 : Massive star-forming regions (Binder+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/918/27https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/918/27http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/918/27https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/918/27https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/918/27http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/918/27GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/918/27/table9aEmission line data from combined spectrumIonIon identifierphys.atmol.ionStagecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[3187.7/10336.5] Rest wavelength; Angstroms0.1nmem.wldoubleF/FHb[0.003/328] Line flux relative to H{beta} (1)phot.flux;arith.ratio;spect.linefloatI/IHb[0.002/274] Line intensity relative to H{beta}spect.line.intensity;arith.ratiofloatError[2/38] Percent error%stat.error;arith.ratiointNotesAdditional notesmeta.notecharJ/ApJ/918/27/table9bEmission line data from the spectra of cut 1 (spatial area of 7.38", see Figure 2)NotesAdditional notesmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWave1[3187.7/10397.8] Rest wavelength; Angstroms0.1nmem.wldoubleIonIon identifierphys.atmol.ionStagecharOWave1[3187.5/10397.2]? Observed wavelength in HH204; Angstroms0.1nmem.wldoublenullableVel1[-104/9.6]? Velocity relative to rest velocity in HH204km/sphys.velocfloatnullableFWHM1[7.3/39.1]? Full-Width at Half-Maximum in HH204km/sspect.line.widthfloatnullablee_FWHM1[0/12.2]? Uncertainty in FWHM1km/sstat.errorfloatnullableF/FHb1[0.002/339]? Line flux relative to H{beta} in HH204 (1)phot.flux;arith.ratio;spect.linefloatnullableI/IHb1[0.002/274]? Line intensity relative to H{beta} in HH204spect.line.intensity;arith.ratiofloatnullableError1[2/40]? Percent error in HH 204%stat.error;arith.ratiointnullablel_Error1[:] : = error greater than 40%meta.code.errorcharOWave2[3187.8/10370.9]? Observed wavelength in Ori Neb+"diffuse blue layer" (DBL); Angstroms0.1nmem.wldoublenullableVel2[3/42.4]? Velocity relative to rest velocity in Ori Neb+DBLkm/sphys.velocfloatnullableFWHM2[6.5/44]? Full-Width at Half-Maximum in Ori Neb+DBLkm/sspect.line.widthfloatnullablee_FWHM2[0/19.5]? Uncertainty in FWHM2km/sstat.errorfloatnullableF/FHb2[0.004/320]? Line flux relative to H{beta} in Ori Neb+DBL (1)phot.flux;arith.ratio;spect.linefloatnullableI/IHb2[0.003/274]? Line intensity relative to H{beta} in Ori Neb+DBLspect.line.intensity;arith.ratiofloatnullableError2[2/35]? Percent error in Ori Neb+DBL%stat.error;arith.ratiointnullablel_Error2[:] : = error greater than 40%meta.code.errorcharJ/ApJ/918/27/table9cEmission line data from the spectra of cut 2 (spatial area of 1.97", see Figure 2)IonIon identifierphys.atmol.ionStagecharFWHM1[6.9/25.8]? Full-Width at Half-Maximum in DBLkm/sspect.line.widthfloatnullablee_FWHM1[0/8.3]? Uncertainty in FWHM1km/sstat.errorfloatnullableF/FHb1[0.06/344]? Line flux relative to H{beta} in DBL (1)phot.flux;spect.line;arith.ratiofloatnullableI/IHb1[0.04/278]? Line intensity relative to H{beta} in DBLspect.line.intensity;arith.ratiofloatnullableError1[2/27]? Percent error in DBL%stat.error;arith.ratiointnullableOWave2[3187.8/10337]? Observed wavelength in Orion Nebula; Angstroms0.1nmem.wldoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWave1[3187.7/10336.5] Rest wavelength; Angstroms0.1nmem.wldoubleOWave1[3726/9531]? Observed wavelength in "diffuse blue layer" (DBL); Angstroms0.1nmem.wlfloatnullableVel1[-3.8/22.1]? Velocity relative to rest velocity in DBLkm/sphys.velocfloatnullableVel2[2.8/43.1]? Velocity relative to rest velocity in Orion Nebulakm/sphys.velocfloatnullableFWHM2[5/40.2]? Full-Width at Half-Maximum in Orion Nebulakm/sspect.line.widthfloatnullablee_FWHM2[0/11]? Uncertainty in FWHM2km/sstat.errorfloatnullableF/FHb2[0.007/313]? Line flux relative to H{beta} in Orion Nebulaphot.flux;arith.ratio;spect.linefloatnullableI/IHb2[0.005/269]? Line intensity relative to H{beta} in Orion Nebulaspect.line.intensity;arith.ratiofloatnullableError2[2/36]? Percent error in Orion Nebula%stat.error;arith.ratiointnullablel_Error1[:] : = error greater than 40%meta.code.errorcharNotesAdditional notesmeta.notecharJ/ApJ/918/27/table9dIndividual pixel emission line data from the blue and red armsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintArmUVES arm identifier ("blue" or "red")instr.setupcharPixel[1/42] Pixel numbermeta.numberintlambda[3726/9903.5] Rest wavelength; Angstroms0.1nmem.wlfloatIonIon identifierphys.atmol.ionStagecharOWave[3725.7/9902.9] Observed wavelength; Angstroms0.1nmem.wlfloatVel[-27.4/-8.4] Velocity relative to rest velocitykm/sphys.veloc;arith.difffloatFWHM[7.5/29] Full-Width at Half-Maximumkm/sspect.line.widthfloate_FWHM[0/8] Uncertainty in FWHMkm/sstat.error;phys.angSizefloatF/FHb[0.02/354] Line flux relative to H{beta} (1)phot.flux;arith.ratio;spect.linefloatI/IHb[0.01/286] Line intensity relative to H{beta}spect.line.intensity;arith.ratiofloatError[2/37]? Percent error%stat.error;arith.ratiointnullablel_Error[:] : = error greater than 40%meta.code.errorcharJ/ApJ/918/27/fluxhbH{beta} values per pixelPixel[1/42] Pixel numbermeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintArmUVES arm identifier ("blue": 27 occurrences; or "red": 37 occurrences)instr.setupcharHbeta[1.6e-14/9.8e-14] Hbeta flux in units of erg/cm^2^/smW.m**-2phot.flux;arith.ratio;spect.linedoublee_Hbeta[8.5e-18/3.5e-17] Hbeta uncertaintymW.m**-2stat.error;spect.linedouble