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http://hdl.handle.net/10261/213862
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dc.contributor.author | Privon, George C. | es_ES |
dc.contributor.author | Ricci, Claudio | es_ES |
dc.contributor.author | Aalto, Susanne | es_ES |
dc.contributor.author | Viti, Serena | es_ES |
dc.contributor.author | Armus, Lee | es_ES |
dc.contributor.author | Díaz-Santos, T. | es_ES |
dc.contributor.author | González-Alfonso, E. | es_ES |
dc.contributor.author | Iwasawa, Kazushi | es_ES |
dc.contributor.author | Jeff, D. L. | es_ES |
dc.contributor.author | Treister, E. | es_ES |
dc.contributor.author | Bauer, Florian Franz | es_ES |
dc.contributor.author | Evans, Aaron S. | es_ES |
dc.contributor.author | Garg, P. | es_ES |
dc.contributor.author | Herrero-Illana, Rubén | es_ES |
dc.contributor.author | Mazzarella, Joseph M. | es_ES |
dc.contributor.author | Larson, Kirsten | es_ES |
dc.contributor.author | Blecha, L. | es_ES |
dc.contributor.author | Barcos-Muñoz, Loreto | es_ES |
dc.contributor.author | Charmandaris, Vassilis | es_ES |
dc.contributor.author | Stierwalt, Sabrina | es_ES |
dc.contributor.author | Pérez-Torres, Miguel A. | es_ES |
dc.date.accessioned | 2020-06-09T09:40:58Z | - |
dc.date.available | 2020-06-09T09:40:58Z | - |
dc.date.issued | 2020-04-24 | - |
dc.identifier.citation | Astrophysical Journal 893(2): 149 (2020) | es_ES |
dc.identifier.issn | 0004-637X | - |
dc.identifier.uri | http://hdl.handle.net/10261/213862 | - |
dc.description.abstract | Enhanced emission from the dense gas tracer HCN (relative to HCO+) has been proposed as a signature of active galactic nuclei (AGN). In a previous single-dish millimeter line survey we identified galaxies with HCN/HCO+ (1-0) intensity ratios consistent with those of many AGN but whose mid-infrared spectral diagnostics are consistent with little to no (≲15%) contribution of an AGN to the bolometric luminosity. To search for putative heavily obscured AGN, we present and analyze NuSTAR hard X-ray (3-79 keV) observations of four such galaxies from the Great Observatories All-sky LIRG Survey. We find no X-ray evidence for AGN in three of the systems and place strong upper limits on the energetic contribution of any heavily obscured (NH > 1024 cm-2) AGN to their bolometric luminosity. The upper limits on the X-ray flux are presently an order of magnitude below what XDR-driven chemistry models predict are necessary to drive HCN enhancements. In a fourth system we find a hard X-ray excess consistent with the presence of an AGN, but contributing only ∼3% of the bolometric luminosity. It is also unclear if the AGN is spatially associated with the HCN enhancement. We further explore the relationship between HCN/HCO+ (for several J upper levels) and LAGN/LIR f for a larger sample of systems in the literature. We find no evidence for correlations between the line ratios and the AGN fraction derived from X-rays, indicating that HCN/HCO+ intensity ratios are not driven by the energetic dominance of AGN, nor are they reliable indicators of ongoing supermassive black hole accretion. © 2020. The American Astronomical Society. All rights reserved | es_ES |
dc.description.sponsorship | G.C.P. and D.L.J. acknowledge support from a NASA NuSTAR award 80NSSC17K0623. G.C.P. also acknowledges support from the University of Florida. C.R. acknowledges support from the CONICYT+PAI Convocatoria Nacional subvencion a instalacion en la academia convocatoria ano 2017 PAI77170080. T.D-S. acknowledges support from the CASSACA and CONICYT fund CAS-CONICYT Call 2018. G.-A. is a Research Associate at the Harvard-Smithsonian Center for Astrophysics, and thanks the Spanish Ministerio de Economia y Competitividad for support under project ESP2017-86582-C4-1-R. K.I. acknowledges support by the Spanish MINECO under grant AYA2016-76012-C3-1-P and MDM-2014-0369 of ICCUB (Unidad de Excelencia "Maria de Maeztu"). L.B. acknowledges support from National Science Foundation grant AST-1715413. F.E.B. acknowledges support from CONICYT-Chile (Basal AFB-170002) and the Ministry of Economy, Development, and Tourism's Millennium Science Initiative through grant IC120009, awarded to The Millennium Institute of Astrophysics, MAS. E.T. acknowledges support from CONICYT-Chile grants Basal-CATA AFB-170002, FONDECYT Regular 1160999 and 1190818, and Anillo de ciencia y tecnologia ACT1720033. K.L.L. was supported by NASA through grants HST-GO-13690.002-A and HST-GO-15241.002-A from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. M.P.T. acknowledges financial support from the State Agency for Research of the Spanish MCIU through the "Center of Excellence Severo Ochoa" award to the Instituto de Astrofisica de Andalucia (SEV-2017-0709) and through grant PGC2018-098915-B-C21. A portion of this work was performed at the Aspen Center for Physics, which is supported by National Science Foundation grant PHY-1607611. The authors thank the Sexten Center for Astrophysics (http://www.sexten-cfa.eu) where part of this work was performed. This research has made use of the NASA/IPAC Extragalactic Database (NED) and NASA's Astrophysics Data System. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | IOP Publishing | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/ESP2017-86582-C4-1-R | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2016-76012-C3-1-P | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MDM-2014-0369 | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/SEV-2017-0709 | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-098915-B-C21 | es_ES |
dc.relation | PGC2018-098915-B-C21/AEI/10.13039/501100011033 | - |
dc.relation | ESP2017-86582-C4-1-R/AEI/10.13039/501100011033 | - |
dc.relation | SEV-2017-0709/AEI/10.13039/501100011033 | - |
dc.relation.isversionof | Postprint | es_ES |
dc.rights | openAccess | en_EN |
dc.subject | Molecular gas | es_ES |
dc.subject | Active galactic nuclei | es_ES |
dc.subject | X-ray active galactic nuclei | es_ES |
dc.subject | Luminous infrared galaxies | es_ES |
dc.subject | Starburst galaxies | es_ES |
dc.title | A hard x-ray test of HCN enhancements as a tracer of embedded black hole growth | es_ES |
dc.type | artículo | es_ES |
dc.identifier.doi | 10.3847/1538-4357/ab8015 | - |
dc.description.peerreviewed | Peer reviewed | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.3847/1538-4357/ab8015 | es_ES |
dc.embargo.terms | 2021-04-21 | es_ES |
dc.contributor.funder | National Aeronautics and Space Administration (US) | es_ES |
dc.contributor.funder | University of Florida | es_ES |
dc.contributor.funder | Comisión Nacional de Investigación Científica y Tecnológica (Chile) | es_ES |
dc.contributor.funder | Ministerio de Economía y Competitividad (España) | es_ES |
dc.contributor.funder | European Commission | es_ES |
dc.contributor.funder | National Science Foundation (US) | es_ES |
dc.contributor.funder | Ministerio de Economía, Fomento y Turismo (Chile) | es_ES |
dc.contributor.funder | Ministerio de Ciencia, Innovación y Universidades (España) | es_ES |
dc.relation.csic | Sí | es_ES |
oprm.item.hasRevision | no ko 0 false | * |
dc.identifier.funder | http://dx.doi.org/10.13039/501100002848 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100003329 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000780 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/100000001 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100005886 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/100000104 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/100007698 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
Aparece en las colecciones: | (IAA) Artículos (ICE) Artículos |
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IAA_2020_ApJ_Hard_X_ray_Test.pdf | 547,03 kB | Adobe PDF | Visualizar/Abrir |
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