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http://hdl.handle.net/2445/127742
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DC Field | Value | Language |
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dc.contributor.author | Hlavacek-Larrondo, J. | - |
dc.contributor.author | Gandhi, P. | - |
dc.contributor.author | Hogan, M. T. | - |
dc.contributor.author | Gendron-Marsolais, M.-L. | - |
dc.contributor.author | Edge, A. C. | - |
dc.contributor.author | Fabian, A. C. | - |
dc.contributor.author | Russell, H. R. | - |
dc.contributor.author | Iwasawa, Kazushi | - |
dc.contributor.author | Mezcua, M. | - |
dc.date.accessioned | 2019-01-30T16:17:32Z | - |
dc.date.available | 2019-01-30T16:17:32Z | - |
dc.date.issued | 2016-09-28 | - |
dc.identifier.issn | 0035-8711 | - |
dc.identifier.uri | http://hdl.handle.net/2445/127742 | - |
dc.description.abstract | Hyper-luminous infrared galaxies (HyLIRGs) lie at the extreme luminosity end of the IR galaxy population with LIR > 1013 L.. They are thought to be closer counterparts of the more distant sub-millimeter galaxies, and should therefore be optimal targets to study the most massive systems in formation.We present deep Chandra observations of IRAS F15307+3252 (100 ks), a classical HyLIRG located at z=0.93 and hosting a radio-loudAGN(L1.4 GHz ∼3.5×1025WHz−1). The Chandra images reveal the presence of extended (r=160 kpc), asymmetric X-ray emission in the soft 0.3-2.0 keV band that has no radio counterpart.We therefore argue that the emission is of thermal origin originating from a hot intragroup or intracluster medium virializing in the potential. We find that the temperature (∼2 keV) and bolometric X-ray luminosity (∼3 × 1043 erg s−1) of the gas follow the expected LX-ray-T correlation for groups and clusters, and that the gas has a remarkably short cooling time of 1.2 Gyr. In addition, VLA radio observations reveal that the galaxy hosts an unresolved compact steep-spectrum (CSS)source, most likely indicating the presence of a young radio source similar to 3C186. We also confirm that the nucleus is dominated by a redshifted 6.4 keV Fe Kα line, strongly suggesting that the AGN is Compton-thick. Finally, Hubble images reveal an overdensity of galaxies and sub-structure in the galaxy that correlates with soft X-ray emission. This could be a snapshot view of on-going groupings expected in a growing cluster environment. IRAS F15307+3252 might therefore be a rare example of a group in the process of transforming into a cluster. | - |
dc.format.extent | 11 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Royal Astronomical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1093/mnras/stw2468 | - |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society, 2016, vol. 464, p. 2223-2233 | - |
dc.relation.uri | https://doi.org/10.1093/mnras/stw2468 | - |
dc.rights | (c) Hlavacek-Larrondo, J. et al., 2016 | - |
dc.source | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) | - |
dc.subject.classification | Galàxies | - |
dc.subject.classification | Observacions astronòmiques | - |
dc.subject.classification | Astronomia de raigs X | - |
dc.subject.other | Galaxies | - |
dc.subject.other | Astronomical observations | - |
dc.subject.other | X-ray astronomy | - |
dc.title | Chandra X-ray observations of the hyper-luminous infrared galaxy IRAS F15307+3252 | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 680654 | - |
dc.date.updated | 2019-01-30T16:17:33Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
Files in This Item:
File | Description | Size | Format | |
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680654.pdf | 1.29 MB | Adobe PDF | View/Open |
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