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.; Schartmann, M.; Sturm, E.; Amorim, A.; Brandner, W.; Clénet, Y.; Zeeuw, P. T. de; Eckart, A.; Eisenhauer, F.; Förster Schreiber, N. M.; 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.; Woillez, J.

doi:10.1051/0004-6361/201936255

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

MPS-Authors

/persons/resource/persons4782

Pfuhl, O.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons208361

Davies, R.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons146381

Dexter, J.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4584

Lutz, D.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4598

Schartmann, M.
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4650

Sturm, E.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons225865

Zeeuw, P. T. de
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons23001

Eckart, A.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4766

Eisenhauer, F.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4923

Förster Schreiber, N. M.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons214427

Gao, F.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4590

Genzel, R.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4768

Gillessen, S.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons231012

Lacour, S.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons16190

Ott, T.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons232571

Shangguan, J.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons206401

Shimizu, T.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons232635

Straub, O.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4582

Tacconi, L. J.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons188252

Waisberg, I.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons214431

Widmann, F.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

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引用

Pfuhl, O., Davies, R., Dexter, J., Netzer, H., Hönig, S., Lutz, D., Schartmann, M., Sturm, E., Amorim, A., Brandner, W., Clénet, Y., Zeeuw, P. T. d., Eckart, A., Eisenhauer, F., Förster Schreiber, N. M., 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., & Woillez, J. (2020). An image of the dust sublimation region in the nucleus of NGC 1068. Astronomy and Astrophysics, 634:. doi:10.1051/0004-6361/201936255.

引用: https://hdl.handle.net/21.11116/0000-0006-4735-F

要旨

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 A_K ≈ 5.5 (A_V ≈ 90) screen of extinction that also appears to contribute significantly to obscuring the broad line region.