J/ApJ/885/160ivo://CDS.VizieR/J/ApJ/885/160doi:10.26093/cds/vizier.18850160CDSBoettcher E.Gallagher J.S.Zweibel E.G.2022-03-07T13:25:28Z2021-10-01T08:12:35ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyultraviolet-astronomyvisible-astronomyradial-velocityThe structure and kinematics of gaseous, disk-halo interfaces are imprinted with the processes that transfer mass, metals, and energy between galactic disks and their environments. We study the extraplanar diffuse ionized gas (eDIG) layer in the interacting, star-forming galaxy NGC5775 to better understand the consequences of star formation feedback on the dynamical state of the thick-disk interstellar medium. Combining emission-line spectroscopy from the Robert Stobie Spectrograph on the Southern African Large Telescope with radio continuum observations from Continuum Halos in Nearby Galaxies-an EVLA Survey, we ask whether thermal, turbulent, magnetic field, and cosmic-ray pressure gradients can stably support the eDIG layer in dynamical equilibrium. This model fails to reproduce the observed exponential electron scale heights of the eDIG thick disk and halo on the northeast (h_z,e_=0.6,7.5kpc) and southwest (h_z,e_=0.8,3.6kpc) sides of the galaxy at R<11kpc. We report the first definitive detection of an increasing eDIG velocity dispersion as a function of height above the disk. Blueshifted gas along the minor axis at large distances from the midplane hints at a disk-halo circulation and/or ram pressure effects caused by the ongoing interaction with NGC5774. This work motivates further integral field unit and/or Fabry-Perot spectroscopy of galaxies with a range of star formation rates to develop a spatially resolved understanding of the role of star formation feedback in shaping the kinematics of the disk-halo interface.2019ApJ...885..160Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/885/160CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/MNRAS/390/59 : X-ray sources in NGC 5775 (Li+, 2008)J/AJ/150/81 : CHANG-ES. IV. VLA D-configuration observations (Wiegert+,2015)J/ApJ/832/118 : Emission-line spectroscopy in NGC 891 (Boettcher+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/885/160https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/885/160http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/885/160https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/885/160https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/885/160http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/885/160GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVOpticaldefaultJ/ApJ/885/160/table4Best-fit emission-line properties: s1e_SII67/Ha? Uncertainty in SII67/Hastat.errorfloatnullableRV-SII67? [SII]6717 heliocentric radial velocity (1)km/sspect.dopplerVeloc;pos.heliocentricintnullablee_RV-SII67? Uncertainty in RV-SII67km/sstat.errorfloatnullabledV-SII67? [SII]6717 line width (2)km/sspect.line.eqWidthintnullablee_dV-SII67? Uncertainty in dV-SII67km/sstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintzDistance from midplanekpcpos.distancefloatI-Ha? H-alpha intensity, 10^-17^erg/cm^2^/s/arcsec^-2^ (1)1e-17mW.m**-2.arcsec**-2spect.line.intensityfloatnullablee_I-Ha? Uncertainty in I-Ha1e-17mW.m**-2.arcsec**-2stat.error;phot.color;em.opt.IfloatnullableRV-Ha? H-alpha heliocentric radial velocity (1)km/sspect.dopplerVeloc;pos.heliocentric;spect.lineintnullablee_RV-Ha? Uncertainty in RV-Hakm/sstat.errorfloatnullabledV-Ha? H-alpha line width (2)km/sspect.line.eqWidthintnullablee_dV-Ha? Uncertainty in dV-Hakm/sstat.errorfloatnullableOI63/Ha? [OI]6300/H-alpha line ratio (1)spect.line.intensity;arith.ratiofloatnullablee_OI63/Ha? Uncertainty in OI63/Hastat.errorfloatnullableRV-OI63? [OI]6300 heliocentric radial velocity (1)km/sspect.dopplerVeloc;pos.heliocentricintnullablee_RV-OI63? Uncertainty in RV-OI63km/sstat.errorintnullabledV-OI63? [OI]6300 line width (2)km/sspect.line.eqWidthintnullablee_dV-OI63? Uncertainty in dV-OI63km/sstat.errorintnullableNII65/Ha? [NII]6583/H-alpha line ratio (1)spect.line.intensity;arith.ratiofloatnullablee_NII65/Ha? Uncertainty in NII65-Hastat.errorfloatnullableRV-NII65? [NII]6583 heliocentric radial velocity (1)km/sspect.dopplerVeloc;pos.heliocentricintnullablee_RV-NII65? Uncertainty in RV-NII65km/sstat.errorfloatnullabledV-NII65? [NII]6583 line width (2)km/sspect.line.eqWidthintnullablee_dV-NII65? Uncertainty in dV-NII65km/sstat.errorfloatnullableSII67/Ha? [SII]6717/H-alpha line ratio (1)spect.line.intensity;arith.ratiofloatnullableJ/ApJ/885/160/table5Best-fit emission-line properties: s2recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRDistance from minor axiskpcpos.distancefloatI-Ha? H-alpha intensity, 10^-17^erg/cm^2^/s/arcsec^2^ (1)1e-17mW.m**-2.arcsec**-2spect.line.intensityfloatnullablee_I-Ha? Uncertainty in I-Ha1e-17mW.m**-2.arcsec**-2stat.error;phot.color;em.opt.IfloatnullableRV-Ha? H-alpha heliocentric radial velocity (1)km/sspect.dopplerVeloc;spect.line;pos.heliocentricintnullablee_RV-Ha? Uncertainty in RV-Hakm/sstat.errorintnullabledV-Ha? H-alpha line width (2)km/sspect.line.eqWidthintnullablee_dV-Ha? Uncertainty in dV-Hakm/sstat.errorintnullablee_NII65/Ha? Uncertainty in NII65/Hastat.errorfloatnullableRV-NII65? [NII]6583 heliocentric radial velocity (1)km/sspect.dopplerVeloc;pos.heliocentricintnullablee_RV-NII65? Uncertainty in RV-NII65km/sstat.errorintnullabledV-NII65? [NII]6583 line width (2)km/sspect.line.eqWidthintnullablee_dV-NII65? Uncertainty in dV-NII65km/sstat.errorintnullableSII67/Ha? [SII]6717/H-alpha line ratio (1)spect.line.intensity;arith.ratiofloatnullablee_SII67/Ha? Uncertainty in SII67-Hastat.errorfloatnullableRV-SII67? [SII]6717 heliocentric radial velocity (1)km/sspect.dopplerVeloc;pos.heliocentricintnullableNII65/Ha? [NII]6583/H-alpha line ratio (1)spect.line.intensity;arith.ratiofloatnullablee_RV-SII67? Uncertainty in RV-SII67km/sstat.errorintnullabledV-SII67? [SII]6717 line width (2)km/sspect.line.eqWidthintnullablee_dV-SII67? Uncertainty in dV-SII67km/sstat.errorintnullableJ/ApJ/885/160/table6Best-fit emission-line properties: s3uvrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintzDistance from midplanekpcpos.distancefloatI-OIIOII3727 intensity, SALT ADUctspect.line.intensityinte_I-OIIUncertainty in I-OIIctstat.errorintOIIratOII3729/[OII]3726 line ratiospect.line.intensity;arith.ratiofloatE_OIIratUpper uncertainty in OIIratstat.error;stat.maxfloate_OIIratLower uncertainty in OIIratstat.errorfloatRV-OIIOII3727 heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricintE_RV-OIIUpper uncertainty in RV-OIIkm/sstat.error;stat.maxinte_RV-OIILower uncertainty in RV-OIIkm/sstat.errorintdV-OIIOII3727 line width (1)km/sspect.line.eqWidthintE_dV-OIIUpper uncertainty in dV-OIIkm/sstat.error;stat.maxinte_dV-OIILower uncertainty in dV-OIIkm/sstat.errorintJ/ApJ/885/160/table7Best-fit emission-line properties: s3orecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintzDistance from midplanekpcpos.distancefloatI-HaH-alpha intensity, SALT ADUctspect.line.intensityinte_I-HaUncertainty in I-Hactstat.error;phot.color;em.opt.IintHRV-HaH-alpha heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentric;spect.lineinte_HRV-HaUncertainty in HRV-Hakm/sstat.errorfloatOII37/Ha? [OII]3727/H-alpha line ratiospect.line.intensity;arith.ratiofloatnullablee_OII37/Ha? Uncertainty OII37/Hastat.errorfloatnullableOIII50/Ha? [OIII]5007/H-alpha line ratio (1)spect.line.intensity;arith.ratiofloatnullablee_OIII50/Ha? Uncertainty in OIII50/Hastat.errorfloatnullableOI63/Ha? [OI]6300/H-alpha line ratio (1)spect.line.intensity;arith.ratiofloatnullablee_OI63/Ha? Uncertainty in OI63/Hastat.errorfloatnullableNII65/Ha? [NII]6583/H-alpha line ratio (1)spect.line.intensity;arith.ratiofloatnullablee_NII65/Ha? Uncertainty in NII65/Hastat.errorfloatnullable