Infrared polarimetry of Mrk 231: scattering off hot dust grains in the central core

Simple item page
dc.contributor.authorLopez Rodriguez, E.
dc.contributor.authorPackham, C.
dc.contributor.authorJones, T. J.
dc.contributor.authorSiebenmorgen, R.
dc.contributor.authorRoche, P. F.
dc.contributor.authorLevenson, N. A.
dc.contributor.authorAlonso Herrero, A.
dc.contributor.authorPerlman, E.
dc.contributor.authorIchikawa, K.
dc.contributor.authorRamos Almeida, C.
dc.contributor.authorGonzalez Martin, O.
dc.contributor.authorNikutta, R.
dc.contributor.authorMartinez Paredez, M.
dc.contributor.authorShenoy, D.
dc.contributor.authorGordon, M. S.
dc.contributor.authorTelesco, C. M.
dc.date.accessioned2024-01-10T13:13:53Z
dc.date.available2024-01-10T13:13:53Z
dc.date.issued2017
dc.description.abstractWe present high-angular (0.17-0.35 arcsec) resolution imaging polarimetric observations of Mrk 231 in the 3.1 mu m filter using MMT-Pol on the 6.5-m MMT, and in the 8.7, 10.3, and 11.6 mu m filters using CanariCam on the 10.4-m Gran Telescopio CANARIAS. In combination with already published observations, we compile the 1-12 mu m total and polarized nuclear spectral energy distribution (SED). The total flux SED in the central 400 pc is explained as the combination of (1) a hot (731 +/- 4 K) dusty structure, directly irradiated by the central engine, which is at 1.6 +/- 0.1 pc away and attributed to be in the pc-scale polar region, (2) an optically-thick, smooth and disc-like dusty structure ('torus') with an inclination of 48 degrees +/- 23 degrees surrounding the central engine, and (3) an extinguished (A(V) = 36 +/- 5 mag) starburst component. The polarized SED decreases from 0.77 +/- 0.14 per cent at 1.2 mu m to 0.31 +/- 0.15 per cent at 11.6 mu m and follows a power-law function, lambda(similar to 0.57). The polarization angle remains constant (similar to 108 degrees) in the 1-12 mu m wavelength range. The dominant polarization mechanism is explained as scattering-off hot dust grains in the pc-scale polar regions.
dc.description.funderUniversity of Texas at San Antonio
dc.description.funderSpanish Plan Nacional de Astronomia y Astrofisica - FEDER program
dc.description.funderSpanish Ministry of Economy and Competitiveness (MINECO)
dc.description.funderRamn y Cajal Program of the Spanish Ministry of Economy and Competitiveness
dc.description.funderGemini Observatory
dc.description.funderFONDECYT
dc.description.funderGrants-in-Aid for Scientific Research
dc.fechaingreso.objetodigital2024-05-09
dc.format.extent9 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/stw2491
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/stw2491
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78351
dc.identifier.wosidWOS:000393647100038
dc.information.autorucFísica;Nikutta R;S/I;250319
dc.issue.numero2
dc.language.isoen
dc.nota.accesoSin adjunto
dc.pagina.final1770
dc.pagina.inicio1762
dc.publisherOXFORD UNIV PRESS
dc.revistaMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
dc.rightsregistro bibliográfico
dc.subjecttechniques: high angular resolution
dc.subjecttechniques: polarimetric
dc.subjectgalaxies: active
dc.subjectgalaxies: Seyfert
dc.subjectinfrared: galaxies
dc.subjectACTIVE GALACTIC NUCLEI
dc.subjectSPECTRAL ENERGY-DISTRIBUTIONS
dc.subjectSEYFERT-GALAXIES
dc.subjectULTRAVIOLET-SPECTRUM
dc.subjectWAVELENGTH DEPENDENCE
dc.subjectLINEAR-POLARIZATION
dc.subjectEMISSION
dc.subjectMARKARIAN-231
dc.subjectTORUS
dc.subjectSPECTROSCOPY
dc.titleInfrared polarimetry of Mrk 231: scattering off hot dust grains in the central core
dc.typeartículo
dc.volumen464
sipa.codpersvinculados250319
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Infrared polarimetry of Mrk 231 scattering off hot dust grains.pdf
Size:
521.53 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Artículos de revistas