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  An image of the dust sublimation region in the nucleus of NGC 1068

Pfuhl, O., Davies, R., Dexter, J., Netzer, H., Hönig, S., Lutz, D., et al. (2020). An image of the dust sublimation region in the nucleus of NGC 1068. Astronomy and Astrophysics, 634: A1. doi:10.1051/0004-6361/201936255.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-4735-F Version Permalink: http://hdl.handle.net/21.11116/0000-0006-4736-E
Genre: Journal Article

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Pfuhl, O.1, Author              
Davies, R.1, Author              
Dexter, J.1, Author              
Netzer, H., Author
Hönig, S., Author
Lutz, D.1, Author              
Schartmann, M.2, Author              
Sturm, E.1, Author              
Amorim, A., Author
Brandner, W., Author
Clénet, Y., Author
Zeeuw, P. T. de1, Author              
Eckart, A.1, Author              
Eisenhauer, F.1, Author              
Förster Schreiber, N. M.1, Author              
Gao, F.1, Author              
Garcia, P. J. V., Author
Genzel, R.1, Author              
Gillessen, S.1, Author              
Gratadour, D., Author
Kishimoto, M., AuthorLacour, S.1, Author              Millour, F., AuthorOtt, T.1, Author              Paumard, T., AuthorPerraut, K., AuthorPerrin, G., AuthorPeterson, B. M., AuthorPetrucci, P. O., AuthorPrieto, M. A., AuthorRouan, D., AuthorShangguan, J.1, Author              Shimizu, T.1, Author              Sternberg, A., AuthorStraub, O.1, Author              Straubmeier, C., AuthorTacconi, L. J.1, Author              Tristram, K. R. W., AuthorVermot, P., AuthorWaisberg, I.1, Author              Widmann, F.1, Author              Woillez, J., Author more..
Affiliations:
1Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159889              
2Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              

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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 Mλ 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°, position angle PA = −50 ± 4°, 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) × 1045 erg s−1, behind a large AK ≈ 5.5 (AV ≈ 90) screen of extinction that also appears to contribute significantly to obscuring the broad line region.

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 Dates: 2020-01-28
 Publication Status: Published online
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 Identifiers: DOI: 10.1051/0004-6361/201936255
Other: LOCALID: 3222093
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Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
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Publ. Info: France : EDP Sciences S A
Pages: - Volume / Issue: 634 Sequence Number: A1 Start / End Page: - Identifier: ISSN: 1432-0746
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1