Pfuhl, O., Davies, R., Dexter, J., Netzer, H., Honig, S., Lutz, D., Schartmann, M., Sturm, E., Amorim, A., Brandner, W., Clenet, Y., de Zeeuw, P. T., Eckart, A., Eisenhauer, F., Schreiber, N. M. Foerster, Gao, F., Garcia, P. J. V., Genzel, R., Gillessen, S., Gratadour, D., Kishimoto, M., Lacour, S., Millour, F., Ott, T., Paumard, T., Perraut, K., Perrin, G., Peterson, B. M., Petrucci, P. O., Prieto, M. A., Rouan, D., Shangguan, J., Shimizu, T., Sternberg, A., Straub, O., Straubmeier, C., Tacconi, L. J., Tristram, K. R. W., Vermot, P., Waisberg, I., Widmann, F. and Woillez, J. (2020). An image of the dust sublimation region in the nucleus of NGC 1068. Astron. Astrophys., 634. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

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Abstract

We present near-infrared interferometric data on the Seyfert 2 galaxy NGC 1068, obtained with the GRAVITY instrument on the European Southern Observatory Very Large Telescope Interferometer. The extensive baseline coverage from 5 to 60 M lambda allowed us to reconstruct a continuum image of the nucleus with an unrivaled 0.2 pc resolution in the K-band. We find a thin ring-like structure of emission with a radius r=0.24 +/- 0.03 pc, inclination i=70 +/- 5 degrees, position angle PA=-50 +/- 4 degrees, and h/r< 0.14, which we associate with the dust sublimation region. The observed morphology is inconsistent with the expected signatures of a geometrically and optically thick torus. Instead, the infrared emission shows a striking resemblance to the 22 GHz maser disc, which suggests they share a common region of origin. The near-infrared spectral energy distribution indicates a bolometric luminosity of (0.4-4.7) x 10(45) erg s(-1), behind a large A(K)approximate to 5.5 (A(V)approximate to 90) screen of extinction that also appears to contribute significantly to obscuring the broad line region.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Pfuhl, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Davies, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dexter, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Netzer, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Honig, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lutz, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schartmann, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sturm, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Amorim, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Brandner, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Clenet, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Zeeuw, P. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Eckart, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Eisenhauer, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schreiber, N. M. FoersterUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gao, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Garcia, P. J. V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Genzel, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gillessen, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gratadour, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kishimoto, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lacour, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Millour, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ott, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paumard, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Perraut, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Perrin, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Peterson, B. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Petrucci, P. O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Prieto, M. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rouan, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shangguan, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shimizu, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sternberg, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Straub, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Straubmeier, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tacconi, L. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tristram, K. R. W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vermot, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Waisberg, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Widmann, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Woillez, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-348146
DOI: 10.1051/0004-6361/201936255
Journal or Publication Title: Astron. Astrophys.
Volume: 634
Date: 2020
Publisher: EDP SCIENCES S A
Place of Publication: LES ULIS CEDEX A
ISSN: 1432-0746
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
ACTIVE GALACTIC NUCLEI; WATER MASER EMISSION; SPECTRAL ENERGY-DISTRIBUTION; NARROW-LINE REGION; RADIATIVE-TRANSFER; OBSCURING TORUS; GALAXY NGC-1068; RADIO STRUCTURE; MOLECULAR GAS; BLACK-HOLESMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/34814

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