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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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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
 Pages: -
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 Rev. Type: -
 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