J/A+A/591/A74ivo://CDS.VizieR/J/A+A/591/A74doi:10.26093/cds/vizier.35910074CDSDamiani F.Bonito R.Magrini L.Prisinzano L.Mapelli M.Micela G.,Kalari V.Maiz Apellaniz J.Gilmore G.Randich S.Alfaro E.,Flaccomio E.Koposov S.Klutsch A.Lanzafame A.C.Pancino E.,Sacco G.G.Bayo A.Carraro G.Casey A.R.Costado M.T.Franciosini E.,Hourihane A.Lardo C.Lewis J.Monaco L.Morbidelli L.Worley C.,Zaggia S.Zwitter T.Dorda R.2017-12-15T10:55:26Z2016-06-17T08:03:55ZCDS support team

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

cds-question@unistra.frWe present observations from the Gaia-ESO Survey in the lines of H{alpha}, [NII], [SII], and He I of nebular emission in the central part of the Carina nebula. We investigate the properties of the two already known kinematic components (approaching and receding), which account for the bulk of emission. Moreover, we investigate the features of the much less known low-intensity high-velocity (absolute RV>50km/s) gas emission. We show that gas giving rise to H{alpha} and HeI emission is dynamically well correlated with but not identical to gas seen through forbidden-line emission. Gas temperatures are derived from line-width ratios, and densities from [SII] doublet ratios. The spatial variation of N ionization is also studied, and found to differ between the approaching and receding components. The main result is that the bulk of the emission lines in the central part of Carina arise from several distinct shell-like expanding regions, the most evident found around {eta} Car, the Trumpler 14 core, and the star WR25. These "shells" are non-spherical and show distortions probably caused by collisions with other shells or colder, higher-density gas. Some of them are also partially obscured by foreground dust lanes, while very little dust is found in their interior. Preferential directions, parallel to the dark dust lanes, are found in the shell geometries and physical properties, probably related to strong density gradients in the studied region. We also find evidence that the ionizing flux emerging from {eta} Car and the surrounding Homunculus nebula varies with polar angle. The high-velocity components in the wings of H{alpha} are found to arise from expanding dust reflecting the {eta} Car spectrum.2016A&A...591A..74Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/591/A74CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/423/579 : Diffuse emissions in Carina nebula (Mizutani+, 2004)J/MNRAS/367/513 : JHKs[3.5][4.5] photometry of NGC 3372 (Tapia+, 2006)J/ApJ/667/963 : Near-infrared photometry of Carina nebula (Sanchawala+, 2007)J/ApJ/739/100 : [NII] observations of Carina Nebula (NGC3372) (Oberst+, 2011)J/ApJS/194/2 : Chandra Carina Complex Project (CCCP) catalog (Broos+, 2011)J/ApJS/194/14 : A Pan-Carina YSO catalog (Povich+, 2011)J/A+A/565/A107 : Globulettes in the Carina nebula (Grenman+, 2014)J/A+A/567/A109 : Carina nebula optically identified YSOs (Kumar+, 2014)J/A+A/572/A116 : The VISTA Carina Nebula Survey (Preibisch+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/591/A74https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/591/A74http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/591/A74https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/591/A74https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/591/A74http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/591/A74GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/591/A74/table1 (Best-fit parameters for nebular lines)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/591/A74/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/591/A74/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/591/A74/table1?GETtext/xml+votable180.050000true160.9408-59.513810.0055555555555555566/38016https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/591/A74?format=asciidefaultJ/A+A/591/A74/table1Best-fit parameters for nebular linesSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIdIdentifiermeta.id;meta.maincharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainHaNb? Intensity of blueshifted H-alpha line (HaNb)km.s**-1.min**-1spect.line.intensity;em.line.HalphadoublenullableHaRVb? Radial velocity of blueshifted H-alpha line (HaRVb)km/sspect.dopplerVeloc;em.line.HalphafloatnullableHasigmab? Gaussian width of blueshifted H-alpha line (Hasigmab)km/sspect.line.width;em.line.HalphafloatnullableHaNr? Intensity of redshifted H-alpha line (HaNr, in km/s/min)km.s**-1.min**-1spect.line.intensity;em.line.HalphadoublenullableHaRVr? Radial velocity of redshifted H-alpha line (HaRVr)km/sspect.dopplerVeloc;em.line.HalphafloatnullableHasigmar? Gaussian width of redshifted H-alpha line (Hasigmar)km/sspect.line.width;em.line.Halphafloatnullable[NII]Nb? Intensity of blueshifted [NII] 6584 ([NII]6584Nb, in km/s/min)km.s**-1.min**-1spect.line.intensitydoublenullable[NII]RVb? Radial velocity of blueshifted [NII] 6584 ([NII]6584RVb)km/sspect.dopplerVelocfloatnullable[NII]sigmab? Gaussian width of blueshifted [NII] 6584 ([NII]6584sigmab)km/sspect.line.widthfloatnullable[NII]Nr? Intensity of redshifted [NII] 6584 ([NII]6584Nr, in km/s/min)km.s**-1.min**-1spect.line.intensitydoublenullable[NII]RVr? Radial velocity of redshifted [NII] 6584 ([NII]6584RVr)km/sspect.dopplerVelocfloatnullable[NII]sigmar? Gaussian width of redshifted [NII] 6584 ([NII]6584sigmar)km/sspect.line.widthfloatnullableHeINb? Intensity of blueshifted HeI 6678 (HeI6678Nb, in km/s/min)km.s**-1.min**-1spect.line.intensitydoublenullableHeIRVb? Radial velocity of blueshifted HeI 6678 (HeI6678RVb)km/sspect.dopplerVelocfloatnullableHeIsigmab? Gaussian width of blueshifted HeI 6678 (HeI6678sigmab)km/sspect.line.widthfloatnullableHeINr? Intensity of redshifted HeI 6678 (HeI6678Nr, in km/s/min)km.s**-1.min**-1spect.line.intensitydoublenullableHeIRVr? Radial velocity of redshifted HeI 6678 (HeI6678RVr)km/sspect.dopplerVelocfloatnullableHeIsigmar? Gaussian width of redshifted HeI 6678 (HeI6678sigmar)km/sspect.line.widthfloatnullable[SII]1Nb? Intensity of blueshifted [SII] 6717 ([SII]6717Nb, in km/s/min)km.s**-1.min**-1spect.line.intensitydoublenullable[SII]1RVb? Radial velocity of blueshifted [SII] 6717 ([SII]6717RVb)km/sspect.dopplerVelocfloatnullable[SII]1sigmab? Gaussian width of blueshifted [SII] 6717 ([SII]6717sigmab)km/sspect.line.widthfloatnullable[SII]1Nr? Intensity of redshifted [SII] 6717 ([SII]6717Nr, in km/s/min)km.s**-1.min**-1spect.line.intensitydoublenullable[SII]1RVr? Radial velocity of redshifted [SII] 6717 ([SII]6717RVr)km/sspect.dopplerVelocfloatnullable[SII]1sigmar? Gaussian width of redshifted [SII] 6717 ([SII]6717sigmar)km/sspect.line.widthfloatnullable[SII]2Nb? Intensity of blueshifted [SII] 6731 ([SII]6731Nb, in km/s/min)km.s**-1.min**-1spect.line.intensitydoublenullable[SII]2RVb? Radial velocity of blueshifted [SII] 6731 ([SII]6731RVb)km/sspect.dopplerVelocfloatnullable[SII]2sigmab? Gaussian width of blueshifted [SII] 6731 ([SII]6731sigmab)km/sspect.line.widthfloatnullable[SII]2Nr? Intensity of redshifted [SII] 6731 ([SII]6731Nr, in km/s/min)km.s**-1.min**-1spect.line.intensitydoublenullable[SII]2RVr? Radial velocity of redshifted [SII] 6731 ([SII]6731RVr)km/sspect.dopplerVelocfloatnullable[SII]2sigmar? Gaussian width of redshifted [SII] 6731 ([SII]6731sigmar)km/sspect.line.widthfloatnullableSetupType of spectrum/setup (1)instr.setupchar