2020A&A...635A..92G

Query : 2020A&A...635A..92G

2020A&A...635A..92G - Astronomy and Astrophysics, volume 635A, 92-92 (2020/3-1)

The resolved size and structure of hot dust in the immediate vicinity of AGN.

GRAVITY COLLABORATION, DEXTER J., SHANGGUAN J., HONIG S., KISHIMOTO M., LUTZ D., NETZER H., DAVIES R., STURM E., PFUHL O., AMORIM A., BAUBOCK M., BRANDNER W., CLENET Y., DE ZEEUW P.T., ECKART A., EISENHAUER F., FORSTER SCHREIBER N.M., GAO F., GARCIA P.J.V., GENZEL R., GILLESSEN S., GRATADOUR D., JIMENEZ-ROSALES A., LACOUR S., MILLOUR F., OTT T., PAUMARD T., PERRAUT K., PERRIN G., PETERSON B.M., PETRUCCI P.O., PRIETO M.A., ROUAN D., SCHARTMANN M., SHIMIZU T., STERNBERG A., STRAUB O., STRAUBMEIER C., TACCONI L.J., TRISTRAM K., VERMOT P., WAISBERG I., WIDMANN F. and WOILLEZ J.

Abstract (from CDS):

We use VLTI/GRAVITY near-infrared interferometry measurements of eight bright type 1 AGN to study the size and structure of hot dust that is heated by the central engine. We partially resolve each source, and report Gaussian full width at half-maximum sizes in the range 0.3-0.8mas. In all but one object, we find no evidence for significant elongation or asymmetry (closure phases ≤1°). The narrow range of measured angular sizes is expected given the similar optical flux of our targets, and implies an increasing effective physical radius with bolometric luminosity, as found from previous reverberation and interferometry measurements. The measured sizes for Seyfert galaxies are systematically larger than for the two quasars in our sample when measured relative to the previously reported R∼L1/2 relationship, which is explained by emission at the sublimation radius. This could be evidence of an evolving near-infrared emission region structure as a function of central luminosity.

Abstract Copyright: © GRAVITY Collaboration et al. 2020

Journal keyword(s): galaxies: nuclei - techniques: interferometric - galaxies: active - quasars: general - galaxies: Seyfert

Simbad objects: 30

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Number of rows : 30
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 Mrk 335 Sy1 00 06 19.5372339024 +20 12 10.617404076   14.19 13.85     ~ 1254 0
2 ESO 113-45 Sy1 01 23 45.7631533440 -58 48 20.808928944   14.08 13.83 13.34   ~ 880 0
3 NGC 863 Sy1 02 14 33.5604714720 -00 46 00.181845336   14.48 13.81 17.9   ~ 689 0
4 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4603 2
5 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1803 2
6 IRAS 03450+0055 Sy1 03 47 40.1887730832 +01 05 14.048016576   15.09 14.64     ~ 91 0
7 Mrk 1506 Sy1 04 33 11.0956735296 +05 21 15.619461552   15.72 15.05 10.08   ~ 2000 2
8 Mrk 1095 Sy1 05 16 11.4092471904 -00 08 59.157166920   14.30 13.92     ~ 890 1
9 UGC 3374 Sy1 05 54 53.6080860768 +46 26 21.624853488   15.37 14.62     ~ 523 2
10 IC 450 Sy1 06 52 12.3346265592 +74 25 37.121227716   15.16 14.19     ~ 571 1
11 Mrk 79 Sy1 07 42 32.8210670808 +49 48 34.783809768   14.74 14.27     ~ 714 1
12 [VV96] J091609.5-621929 Sy1 09 16 09.3662148312 -62 19 29.562130128   12.51 12.26 11.5   ~ 142 0
13 Mrk 110 Sy1 09 25 12.8479065576 +52 17 10.386311208   16.82 16.41     ~ 604 0
14 NGC 3227 Sy1 10 23 30.5765149296 +19 51 54.282206700   12.61 11.79     ~ 1703 1
15 NGC 3516 Sy1 11 06 47.4632200800 +72 34 07.298374656   13.12 12.40     ~ 1545 0
16 NGC 3783 Sy1 11 39 01.7096819040 -37 44 19.009642992   12.46 13.43 11.33 12.1 ~ 1648 0
17 NGC 3786 Sy2 11 39 42.5121341928 +31 54 33.971791752   14.62 13.74     ~ 393 1
18 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2166 1
19 LEDA 38224 Sy1 12 04 42.1097215992 +27 54 11.869350264   15.64 15.60     ~ 405 0
20 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3693 2
21 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 5803 1
22 NGC 4593 Sy1 12 39 39.4435107024 -05 20 39.034988448   13.95 13.15     ~ 1090 0
23 Mrk 231 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 1989 3
24 IRAS 13349+2438 Sy1 13 37 18.7199358192 +24 23 03.319883484     15.0     ~ 391 0
25 ESO 445-50 Sy1 13 49 19.2601801224 -30 18 34.213815504   13.81 13.66 12.18 12.35 ~ 804 0
26 NGC 5548 Sy1 14 17 59.5400291832 +25 08 12.603122268   14.35 13.73     ~ 2710 0
27 Mrk 817 Sy1 14 36 22.0820611632 +58 47 39.394934844   14.19 13.79     ~ 523 0
28 QSO B1725-142 QSO 17 28 19.7893499760 -14 15 55.854918288   14.69 14.03 13.7   ~ 309 0
29 Mrk 509 Sy1 20 44 09.7504483224 -10 43 24.727155528   13.35 13.12 10.7   ~ 1276 0
30 NGC 7469 Sy1 23 03 15.6 +08 52 26 12.60 13.00 12.34     ~ 2096 3

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