Amorim, A., Bauboeck, M., Brandner, W., Clenet, Y., Davies, R., de Zeeuw, P. T., Dexter, J., Eckart, A., Eisenhauer, F., Schreiber, N. M. Foerster, Gao, F., Garcia, P. J. V., Genzel, R., Gillessen, S., Gratadour, D., Hoenig, S., Kishimoto, M., Lacour, S., Lutz, D., Millour, F., Netzer, H., Ott, T., Paumard, T., Perraut, K., Perrin, G., Peterson, B. M., Petrucci, P. O., Pfuhl, O., Prieto, M. A., Rouan, D., Shangguan, J., Shimizu, T., Schartmann, M., Stadler, J., Sternberg, A., Straub, O., Straubmeier, C., Sturm, E., Tacconi, L. J., Tristram, K. R. W., Vermot, P., von Fellenberg, S., Waisberg, I., Widmann, F. and Woillez, J. (2020). The spatially resolved broad line region of IRAS 09149-6206. Astron. Astrophys., 643. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

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Abstract

We present new near-infrared VLTI/GRAVITY interferometric spectra that spatially resolve the broad Br gamma emission line in the nucleus of the active galaxy IRAS 09149-6206. We use these data to measure the size of the broad line region (BLR) and estimate the mass of the central black hole. Using an improved phase calibration method that reduces the differential phase uncertainty to 0.05 degrees per baseline across the spectrum, we detect a differential phase signal that reaches a maximum of similar to 0.5 degrees between the line and continuum. This represents an offset of similar to 120 mu as (0.14 pc) between the BLR and the centroid of the hot dust distribution traced by the 2.3 mu m continuum. The offset is well within the dust sublimation region, which matches the measured similar to 0.6 mas (0.7 pc) diameter of the continuum. A clear velocity gradient, almost perpendicular to the offset, is traced by the reconstructed photocentres of the spectral channels of the Br gamma line. We infer the radius of the BLR to be similar to 65 mu as (0.075 pc), which is consistent with the radius-luminosity relation of nearby active galactic nuclei derived based on the time lag of the H beta line from reverberation mapping campaigns. Our dynamical modelling indicates the black hole mass is similar to 1x10(8) M-circle dot, which is a little below, but consistent with, the standard M-BH-sigma (*) relation.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Amorim, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bauboeck, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Brandner, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Clenet, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Davies, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Zeeuw, P. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dexter, J.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
Hoenig, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kishimoto, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lacour, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lutz, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Millour, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Netzer, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ott, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paumard, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Perraut, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Perrin, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Peterson, B. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Petrucci, P. O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pfuhl, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Prieto, M. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rouan, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shangguan, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shimizu, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schartmann, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stadler, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sternberg, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Straub, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Straubmeier, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sturm, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tacconi, L. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tristram, K. R. W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vermot, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
von Fellenberg, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Waisberg, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Widmann, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Woillez, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-311070
DOI: 10.1051/0004-6361/202039067
Journal or Publication Title: Astron. Astrophys.
Volume: 643
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; SUPERMASSIVE BLACK-HOLES; AGN MONITORING PROJECT; REVERBERATION MAPPING DATA; PEAKED EMISSION-LINES; SINGLE-EPOCH SPECTRA; GALAXIES; COEVOLUTION; QUASARS; MASSESMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/31107

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