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J/A+A/609/A9        Local Swift-BAT AGN observed with Herschel    (Lutz+, 2018)

Local Swift-BAT active galactic nuclei prefer circumnuclear star formation. Lutz D., Shimizu T., Davies R.I., Herrera Camus R., Sturm E., Tacconi L.J., Veilleux S. <Astron. Astrophys. 609, A9 (2018)> =2018A&A...609A...9L (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Millimetric/submm sources Keywords: galaxies: active - galaxies: structure Abstract: We use Herschel data to analyze the size of the far-infrared 70micrometer emission for z<0.06 local samples of 277 hosts of Swift-BAT selected AGN, and 515 comparison galaxies that are not detected by BAT. For modest far-infrared luminosities 8.5<log(LFIR)<10.5, we find large scatter of half light radii for both populations, but a typical value ∼1kpc for the BAT hosts that is only half that of comparison galaxies of same far-infrared luminosity. The result mostly reflects a more compact distribution of star formation (and hence gas) in the AGN hosts, but compact AGN heated dust may contribute in some extremely AGN-dominated systems. Our findings are in support of an AGN-host coevolution where accretion onto the central black hole and star formation are fed from the same gas reservoir, with more efficient black hole feeding if that reservoir is more concentrated. The significant scatter in the far-infrared sizes emphasizes that we are mostly probing spatial scales much larger than those of actual accretion, and that rapid accretion variations can smear the distinction between the AGN and comparison categories. Large samples are hence needed to detect structural differences that favour feeding of the black hole. No size difference AGN host vs. comparison galaxies is observed at higher far-infrared luminosities log(LFIR)>10.5 possibly because these are typically reached in more compact regions. Description: Table A.1 lists the basic properties of the BAT AGN and reference samples, and the derived far-infrared sizes. For guidance, part of the table and related notes are also included in an appendix to the paper. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablea1.dat 79 792 BAT and reference samples
Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
1- 20 A20 --- Name Source name 22- 29 F8.4 deg RAdeg Right ascension (J2000) 31- 38 F8.4 deg DEdeg Declination (J2000) 40- 42 A3 --- Sample Member of BAT or reference (Ref) sample 44- 48 F5.3 kpc/arcsec Scale Adopted scale in kpc per arcsec 50 A1 --- l_Re70 Limit Flag for Re70 52- 57 F6.3 kpc Re70 Half light radius at 70um 59- 63 F5.3 kpc e_Re70 ? Error of Re70 (only statistical) 65- 67 I3 --- Band [70/100] Band used to derive Re70 (1) 69- 73 F5.2 [Lsun] logLFIR log10 of FIR 40-120micrometer luminosity 75- 79 F5.2 [10-7W] logLBAT ? log10 of BAT 14-195keV luminosity
Note (1): Re70 is derived from Herschel-PACS 70um data, with few exceptions where Re70 was scaled from Re100 (measured at 100um), using Re70=0.85*Re100. These objects are marked 100 in the Band column
Acknowledgements: Dieter Lutz, lutz(at)
(End) Dieter Lutz [MPE], Patricia Vannier [CDS] 13-Sep-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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