Mass outflow of the X-ray emission line gas in NGC 4151

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dc.contributor.authorKraemer, S. B.
dc.contributor.authorTurner, T. J.
dc.contributor.authorCouto, J. D.
dc.contributor.authorCrenshaw, D. M.
dc.contributor.authorSchmitt, H. R.
dc.contributor.authorRevalski, M.
dc.contributor.authorFischer, T. C.
dc.date.accessioned2020-03-25T16:13:36Z
dc.date.available2020-03-25T16:13:36Z
dc.date.issued2020-02-14
dc.description.abstractWe have analysed Chandra/High Energy Transmission Gratings spectra of the X-ray emission line gas in the Seyfert galaxy NGC 4151. The zeroth-order spectral images show extended H- and He-like O and Ne, up to a distance r ∼ 200 pc from the nucleus. Using the first-order spectra, we measure an average line velocity ∼−230 km s⁻¹, suggesting significant outflow of X-ray gas. We generated CLOUDY photoionization models to fit the first-order spectra; the fit required three distinct emission line components. To estimate the total mass of ionized gas and the mass outflow rates, we applied the model parameters to fit the zeroth-order emission line profiles of Ne IX and Ne X. We determined the total mass of ≈5.4 × 10⁵ M⊙. Assuming the same kinematic profile as that for the [O III] gas, derived from our analysis of Hubble Space Telescope/Space Telescope Imaging Spectrograph spectra, the peak X-ray mass outflow rate was ≈1.8 M⊙ yr⁻¹, at r ∼ 150 pc. The total mass and mass outflow rates are similar to those determined using [O III], implying that the X-ray gas is a major outflow component. However, unlike the optical outflows, the X-ray outflow rate does not drop off at r > 100 pc, which suggests that it may have a greater impact on the host galaxy.en_US
dc.description.sponsorshipSupport for this work was provided by the National Aeronautics and Space Administration (NASA) through Chandra Award Number G04-15106X issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060, and from program GO-13508, support for which was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. This research has made use of data and/or software provided by the High Energy Astrophysics Science Archive Research Center (HEASARC), which is a service of the Astrophysics Science Division at NASA/Goddard Space Flight Center (GSFC) and the High Energy Astrophysics Division of the Smithsonian Astrophysical Observatory. We are grateful to the Chandra operations teams for performing the observations and providing software and calibration for the data analysis. We thank Keith Arnaud, for his continuing maintenance and development of XSPEC, and Gary Ferland and associates, for the maintenance and development of CLOUDY.en_US
dc.description.urihttps://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staa428/5736047en_US
dc.format.extent18 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2cmrj-rfet
dc.identifier.citationKraemer, S. B.; Turner, T. J.; Couto, J. D.; Crenshaw, D. M.; Schmitt, H. R.; Revalski, M.; Fischer, T. C.; Mass outflow of the X-ray emission line gas in NGC 4151; Monthly Notices of the Royal Astronomical Society 493(3), pages 3893-3910 (2020); https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staa428/5736047en_US
dc.identifier.urihttps://doi.org/10.1093/mnras/staa428
dc.identifier.urihttp://hdl.handle.net/11603/17639
dc.language.isoen_USen_US
dc.publisherOxford University Pressen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Physics Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rights© 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society
dc.titleMass outflow of the X-ray emission line gas in NGC 4151en_US
dc.typeTexten_US

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