J/ApJ/910/104 subarcsec MIR view of local AGN. IV. ISAAC imaging (Isbell+, 2021)
Subarcsecond mid-infrared view of local Active Galactic Nuclei.
IV. The L and M-band imaging atlas.
Isbell J.W., Burtscher L., Asmus D., Pott J.-U., Couzy P., Stalevski M.,
Gamez Rosas V., Meisenheimer K.
<Astrophys. J., 910, 104 (2021)>
=2021ApJ...910..104I 2021ApJ...910..104I
ADC_Keywords: Active gal. nuclei; Galaxies, Seyfert; Photometry, infrared
Keywords: Active galactic nuclei ; AGN host galaxies ;
Infrared photometry ; Infrared galaxies
Abstract:
We present the largest currently existing subarcsecond 3-5µm atlas
of 119 local (z<0.3) active galactic nuclei (AGNs). This atlas
includes AGNs of five subtypes: 22 are Seyfert 1; five are
intermediate Seyferts; 46 are Seyfert 2; 26 are low-ionization nuclear
emission regions; and 20 are composites/starbursts. Each active
galactic nucleus was observed with the Very Large Telescope Infrared
Spectrometer and Array Camera (ISAAC) in the L and/or M bands between
2000 and 2013. We detected at 3σ confidence 92 sources in the L
band and 83 sources in the M band. We separated the flux into
unresolved nuclear flux and resolved the flux through two-Gaussian
fitting. We report the nuclear flux, extended flux, apparent size, and
position angle of each source, giving 3σ upper limits for
sources that are undetected. Using Wide-field Infrared Survey Explorer
(WISE) W1- and W2-band photometry we derived relations predicting the
nuclear L and M fluxes for Sy1 and Sy2 AGNs based on their W1-W2 color
and WISE fluxes. Lastly, we compare the measured mid-infrared colors
to those predicted by dusty torus models SKIRTOR, CLUMPY, CAT3D, and
CAT3D-WIND, finding the best agreement with the latter. We find that
models including polar winds best reproduce the 3-5µm colors,
indicating that it is an important component of dusty torus models. We
found that several AGNs are bluer than models predict. We discuss
several explanations for this and find that it is most plausibly
stellar light contamination within the ISAAC L-band nuclear fluxes.
Description:
The program from which the majority of sources were observed
(ESO ID 290.B-5133(A); PI: Asmus) was a survey of AGNs designed to
complement the subarcsecond N- and Q-band AGN sample of A14
(Asmus+ 2014, J/MNRAS/439/1648) with 3 and 5um images. Out of the
original sample of 253 objects, 59 were observed in 2013 June and July
with the ISAAC (Infrared Spectrometer and Array Camera) instrument on
the Very Large Telescope (VLT).
To supplement this sample, we searched the ESO archive for all L-
and/or M-band ISAAC observations of local (z<0.3) active galaxies
contained in A14. We also include 20 AGNs observed from the archival
programs that were not in the A14 sample. The final sample includes
119 AGNs of four broad classes. See Section 2.
Each AGN was observed with the L' filter (λc=3.78um), with
the narrow Mnb filter (λc=4.66um), or with both between 2000
and 2013.
For a subset of 21 AGNs we can estimate the stellar contamination
using K-band fluxes and AGN fractions derived by
Burtscher+ (2015A&A...578A..47B 2015A&A...578A..47B). Using SINFONI, these fluxes were
measured in the central 1" diameter aperture of each galaxy.
See Section 5.1.1.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 101 119 L'-band and Mnb-band AGN nuclear flux catalog
table3.dat 137 119 L'-band and Mnb-band AGN extended flux catalog
table4.dat 42 21 SINFONI-estimated stellar fluxes and AGN fractions
table5.dat 104 315 Observational data for all sources and epochs
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See also:
B/eso : ESO Science Archive Catalog (ESO, 1991-2022)
VII/258 : Quasars and Active Galactic Nuclei (13th Ed.) (Veron+ 2010)
J/A+AS/119/547 : IR photometry of ESO calibration stars (van der Bliek+ 1996)
J/ApJS/112/315 : Spectroscopic parameters of Seyfert nuclei (Ho+ 1997)
J/ApJ/475/469 : Composite HST Spectrum of Quasars (Zheng+ 1997)
J/ApJ/713/970 : Low-resolution SED templates for AGNs & gal. (Assef+, 2010)
J/ApJ/709/884 : Starburst-AGN composites role in LIRG mergers (Yuan+, 2010)
J/MNRAS/414/500 : Spitzer/IRS ATLAS project source (Hernan-Caballero+, 2011)
J/A+A/558/A149 : VLTI/MIDI AGN Large Program observations (Burtscher+, 2013)
J/MNRAS/439/1648 : Subarcsecond mid-infrared atlas of local AGN (Asmus+, 2014)
J/A+A/565/A71 : NGC1068 MIDI/VLTI observations (Lopez-Gonzaga+, 2014)
J/ApJS/221/12 : AGNs in the MIR using AllWISE data (Secrest+, 2015)
J/ApJ/822/109 : MIR view of polar dust emission in local AGNs (Asmus+, 2016)
J/MNRAS/458/4512 : Nearby Seyfert gal. FIR emissions (Garcia-Gonzalez+, 2016)
J/ApJS/234/23 : The WISE AGN candidates catalogs (Assef+, 2018)
J/ApJ/884/11 : 6 AGN dusty torus models. II. (Gonzalez-Martin+, 2019)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Target Name
16 A1 --- m_Name [EW] Component on Name
18- 19 I2 h RAh Hour of Right Ascension (J2000)
21- 22 I2 min RAm Minute of Right Ascension (J2000)
24- 28 F5.2 s RAs Second of Right Ascension (J2000)
30- 30 A1 --- DE- Sign of the Declination (J2000)
31- 32 I2 deg DEd Degree of Declination (J2000)
34- 35 I2 arcmin DEm Arcminute of Declination (J2000)
37- 41 F5.2 arcsec DEs Arcsecond of Declination (J2000)
43- 45 A3 --- AGN AGN Type from Asmus+ (2014, J/MNRAS/439/1648)
47- 47 A1 --- r_AGN Reference for AGN if not from Asmus+ (1)
49- 50 A2 --- l_LFluxNuc [≤ ] Limit flag on LFluxNuc
52- 58 F7.2 mJy LFluxNuc [0.05/1941]? L'-band flux (2)
60- 65 F6.2 mJy e_LFluxNuc [0.04/242]? Uncertainty in LFluxNuc
67- 68 A2 --- l_MFluxNuc [≤ ] Limit flag on MFluxNuc
70- 76 F7.2 mJy MFluxNuc [0.3/2688]? Mnb-band flux (2)
78- 83 F6.2 mJy e_MFluxNuc [0.1/375]? Uncertainty in MFluxNuc
85- 86 A2 --- l_F12um [≤ ] Limit flag on NFlux
88- 94 F7.2 mJy F12um [1.3/8327]? Nuclear 12um flux (N Flux) from
Asmus+ (2014, J/MNRAS/439/1648) unless
"r_AGN" column is filled
96-101 F6.1 mJy e_F12um [0.5/1050]? Uncertainty in F12um
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Note (1): F12um and AGN classifications are from Asmus+ (2014, J/MNRAS/439/1648)
except for the references as follows:
1 = Veron-Cetty & Veron (2010, Cat. VII/258);
2 = Yuan et al. (2010, J/ApJ/709/884);
3 = Ho et al. (1997, J/ApJS/112/315);
4 = Hernan-Caballero & Hatziminaoglou (2011, J/MNRAS/414/500);
5 = Hameed & Devereux (1999AJ....118..730H 1999AJ....118..730H)
Note (2): The flux is from the fitted unresolved component.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- Name Target Name
16 A1 --- m_Name [EW] Component on Name
18- 19 A2 --- l_LFluxExt [≤ ] Limit flag on LFluxExt
20- 25 F6.1 mJy LFluxExt [0.2/1819]? L'-band flux
27- 31 F5.1 mJy e_LFluxExt [0.3/875]? Uncertainty in LFluxExt
33- 38 F6.1 pc ThetaLExt [4.8/3161]? Major axis, L'-band
40- 44 F5.1 pc e_ThetaLExt [0.2/420]? Uncertainty in ThetaLExt
46- 50 F5.1 deg PALExt [-37.1/134]? Source position angle, L'-band
52- 56 F5.1 deg e_PALExt [0.9/72]? Uncertainty in PALExt
58- 62 F5.1 --- rL [0.4/0.9]? minor/major axis ratio, L'-band
64- 65 A2 --- l_MFluxExt [≤ ] Limit flag on MFluxExt
66- 71 F6.1 mJy MFluxExt [1.2/4205]? M-band flux
73- 78 F6.1 mJy e_MFluxExt [0.5/1489]? Uncertainty in MFluxExt
80- 85 F6.1 pc ThetaMExt [4.8/3161]? Major axis, Mnb-band
87- 91 F5.1 pc e_ThetaMExt [0.4/293]? Uncertainty in ThetaMExt
93- 97 F5.1 deg PAMExt [-17.4/134]? Source position angle, Mnb-band
99-103 F5.1 deg e_PAMExt [3/66.2]? Uncertainty in PAMExt
105-109 F5.1 --- rM [0.4/0.9]? minor/major axis ratio, Mnb-band
111-115 F5.1 deg PANExt [16/200]? Mean nuclear MIR position angle,
PAN (3)
117-121 F5.1 deg e_PANExt [0/61]? Uncertainty in PANExt (3)
123-129 F7.2 --- fnuc-L [0.04/1]? Nuclear flux fraction, L'-band
131-137 F7.2 --- fnuc-M [0.2/0.99]? Nuclear flux fraction, Mnb-band
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Note (3): Position angles from Asmus+ (2016, J/ApJ/822/109) for reference.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Target Name
10- 15 F6.1 mJy LFluxap [1.9/3112]? 1" aperture L'-band flux
17- 19 F3.1 mJy e_LFluxap [0.1/6.5]? Uncertainty in LFlux-1as
21- 26 F6.1 mJy LFluxNuc [0.6/2013]? Measured nuclear Gaussian
L'-band flux
28- 32 F5.1 mJy e_LFluxNuc [0.1/239]? Uncertainty in LFlux-nuc
34- 37 F4.1 mJy Fst [1.2/71] Estimated stellar flux
39- 42 F4.2 mJy fAGN [0.16/1] Measured AGN Fraction
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 1 I1 --- Sel [0/1] Epochs selected for analysis
3- 17 A15 --- Name Target Name
19- 37 A19 "datime" ObsDate Observation date, ISO 8601
39- 51 A13 --- ObsID Observation identifier
53- 55 A3 --- Filt Filter ("Mnb" or "L'")
57- 60 I4 s Exp [60/2880] Exposure time
62- 65 F4.2 arcsec PSF [0.3/1.6] PSF FWHM
67- 68 A2 --- l_NucFlux [≤ ] Limit flag for NucFlux
69- 75 F7.2 mJy NucFlux [0.06/2688] Nuclear Flux
77- 82 F6.2 mJy e_NucFlux [0.01/375]? Uncertainty in NucFlux
84- 85 A2 --- l_ExtFlux [≤ ] Limit flag for ExtFlux
86- 94 F9.2 mJy ExtFlux [0.2/4268]? Extended Flux
96-102 F7.2 mJy e_ExtFlux [0.19/1472]? Uncertainty in ExtFlux
104-104 I1 --- Flag [0/3]? Flag (1)
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Note (1): Flags as follows:
0 = no issue;
1 = possible error in the reduction;
2 = likely error in reduction (chopping/nodding);
3 = failure in full chop/nod reduction.
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History:
From electronic version of the journal
References:
Asmus et al. Paper I. 2014MNRAS.439.1648A 2014MNRAS.439.1648A Cat. J/MNRAS/439/1648
Asmus et al. Paper II. 2015MNRAS.454..766A 2015MNRAS.454..766A Cat. J/MNRAS/454/766
Asmus et al. Paper III. 2016ApJ...822..109A 2016ApJ...822..109A Cat. J/ApJ/822/109
Isbell et al. Paper IV. 2021ApJ...910..104I 2021ApJ...910..104I This catalog
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 17-Aug-2022