Hubble Space Telescope Observations of [O III] Emission in Nearby QSO2s: Physical Properties of the Ionised Outflows
| dc.contributor.author | Falcao, Anna Trindade | |
| dc.contributor.author | Kraemer, S. B. | |
| dc.contributor.author | Fischer, T. C. | |
| dc.contributor.author | Crenshaw, D. M. | |
| dc.contributor.author | Revalski, M. | |
| dc.contributor.author | Schmitt, H. R. | |
| dc.contributor.author | Vestergaard, M. | |
| dc.contributor.author | Elvis, M. | |
| dc.contributor.author | Gaskell, C. M. | |
| dc.contributor.author | Hamann, F. | |
| dc.contributor.author | Ho, L. C. | |
| dc.contributor.author | Hutchings, J. | |
| dc.contributor.author | Mushotzky, R. | |
| dc.contributor.author | Netzer, H. | |
| dc.contributor.author | Storchi-Bergmann, T. | |
| dc.contributor.author | Turner, T.J. | |
| dc.contributor.author | Ward, M.J. | |
| dc.date.accessioned | 2020-11-19T19:20:40Z | |
| dc.date.available | 2020-11-19T19:20:40Z | |
| dc.description.abstract | We use Hubble Space Telescope (HST)/ Space Telescope Imaging Spectrograph (STIS) long-slit G430M and G750M spectra to analyse the extended [O~III] 5007A emission in a sample of twelve nearby (z < 0.12) luminous (L_bol > 1.6 x 10^45 erg s^-1) QSO2s. The purpose of the study is to determine the properties of the mass outflows of ionised gas and their role in AGN feedback. We measure fluxes and velocities as functions of radial distances. Using Cloudy models and ionising luminosities derived from [O~III] 5007A, we are able to estimate the densities for the emission-line gas. From these results, we derive masses of [O~III]-emitting gas, mass outflow rates, kinetic energies, kinetic luminosities, momenta and momentum flow rates as a function of radial distance for each of the targets. For the sample, masses are several times 10^3 - 10^7 solar masses and peak outflow rates are 9.3 x 10^-3 Msun/yr to 10.3 Msun/yr. The peak kinetic luminosities are 3.4 x 10^-8 to 4.9 x 10^-4 of the bolometric luminosity, which does not approach the 5.0 x 10^-3 - 5.0 x 10^-2 range required by some models for efficient feedback. For Mrk 34, which has the largest kinetic luminosity of our sample, in order to produce efficient feedback there would have to be 10 times more [O~III]-emitting gas than we detected at its position of maximum kinetic luminosity. Three targets show extended [O~III] emission, but compact outflow regions. This may be due to different mass profiles or different evolutionary histories. | en_US |
| dc.description.sponsorship | The authors thank the anonymous referee for helpful comments that improved the clarity of this paper.Support for this work was provided by NASA through grant number HST-GO-13728.001-A from the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555. Basic research at the Naval Research Laboratory is funded by 6.1 base funding. T.C.F. was supported by an appointment to the NASA Postdoctoral Program at the NASA Goddard Space Flight Center, administered by the Universities Space Research Association under contract with NASA. T.S.-B. acknowledges support from the Brazilian institutions CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) and FAPERGS (Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul). L.C.H. was supported by the National Key R&D Program of China (2016YFA0400702) and the National Science Foundation of China (11473002, 11721303). M.V. gratefully acknowledges financial support from the Danish Council for Independent Research via grant no. DFF 4002-00275 and 8021-00130. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This paper used the photoionization code Cloudy, which can be obtained from http://www.nublado.org. We thank Gary Ferland and associates, for the maintenance and development of Cloudy | en_US |
| dc.description.uri | https://arxiv.org/abs/2010.08050 | en_US |
| dc.format.extent | 14 pages | en_US |
| dc.genre | journal articles preprints | en_US |
| dc.identifier | doi:10.13016/m2qolm-wfck | |
| dc.identifier.citation | Anna Trindade Falcao, S. B. Kraemer, T. C. Fischer, D. M. Crenshaw, M. Revalski, H. R. Schmitt, M. Vestergaard, M. Elvis, C. M. Gaskell, F. Hamann, L. C. Ho, J. Hutchings, R. Mushotzky, H. Netzer, T. Storchi-Bergmann, T.J. Turner and M.J. Ward, Hubble Space Telescope Observations of [O~III] Emission in Nearby QSO2s: Physical Properties of the Ionised Outflows, https://arxiv.org/abs/2010.08050 | en_US |
| dc.identifier.uri | http://hdl.handle.net/11603/20107 | |
| dc.language.iso | en_US | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Physics Department Collection | |
| dc.relation.ispartof | UMBC Faculty Collection | |
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| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | Hubble Space Telescope Observations of [O III] Emission in Nearby QSO2s: Physical Properties of the Ionised Outflows | en_US |
| dc.type | Text | en_US |