C-GOALS II. Chandra observations of the lower luminosity sample of nearby luminous infrared galaxies in GOALS

ASTRONOMY & ASTROPHYSICS

dc.creatorTorres-Alba, N
dc.creatorIwasawa, K
dc.creatorDíaz-Santos, Tanio
dc.creatorCharmandaris, V
dc.creatorRicci, C
dc.creatorChu, J K
dc.creatorSanders, D B
dc.creatorArmus, Lee
dc.creatorBarcos-Muñoz, L
dc.creatorEvans, A S
dc.creatorHowell, J H
dc.creatorInami, H
dc.creatorLinden, S T
dc.creatorMedling, A M
dc.creatorPrivon, G C
dc.creatorU, V
dc.creatorYoon, I
dc.date2021-08-23T22:55:47Z
dc.date2022-07-07T02:33:32Z
dc.date2021-08-23T22:55:47Z
dc.date2022-07-07T02:33:32Z
dc.date2018
dc.date.accessioned2023-08-23T00:20:09Z
dc.date.available2023-08-23T00:20:09Z
dc.identifier1151239
dc.identifier1151239
dc.identifierhttps://hdl.handle.net/10533/251687
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8354735
dc.descriptionWe analyze Chandra X-ray observatory data for a sample of 63 luminous infrared galaxies (LIRGs), sampling the lower-infrared luminosity range of the Great Observatories All-Sky LIRG survey (GOALS), which includes the most luminous infrared selected galaxies in the local Universe. X-rays are detected for 84 individual galaxies within the 63 systems, for which arcsecond resolution X-ray images, fluxes, infrared and X-ray luminosities, spectra and radial profiles are presented. Using X-ray and mid-infrared (MIR) selection criteria, we find AGN in (31 +/- 5)% of the galaxy sample, compared to the (38 +/- 6)% previously found for GOALS galaxies with higher infrared luminosities (C-GOALS I). Using MIR data, we find that (59 +/- 9)% of the X-ray selected AGN in the full C-GOALS sample do not contribute significantly to the bolometric luminosity of the host galaxy. Dual AGN are detected in two systems, implying a dual AGN fraction in systems that contain at least one AGN of (29 +/- 14)%, compared to the (11 +/- 10)% found for the C-GOALS I sample. Through analysis of radial profiles, we derive that most sources, and almost all AGN, in the sample are compact, with half of the soft X-ray emission generated within the inner similar to 1 kpc. For most galaxies, the soft X-ray sizes of the sources are comparable to those of the MIR emission. We also find that the hard X-ray faintness previously reported for the bright C-GOALS I sources is also observed in the brightest LIRGs within the sample, with L-FIR > 8 x 10(10) L-circle dot.
dc.descriptionRegular 2015
dc.descriptionFONDECYT
dc.descriptionFONDECYT
dc.languageeng
dc.relationhandle/10533/111557
dc.relationhandle/10533/111541
dc.relationhandle/10533/108045
dc.relationhttps://doi.org/10.1051/0004-6361/201834105
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.rightsinfo:eu-repo/semantics/article
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleC-GOALS II. Chandra observations of the lower luminosity sample of nearby luminous infrared galaxies in GOALS
dc.titleASTRONOMY & ASTROPHYSICS
dc.typeArticulo
dc.typeinfo:eu-repo/semantics/publishedVersion


Este ítem pertenece a la siguiente institución