J/A+A/622/A146 MAGNUM survey galaxies images (Mingozzi+, 2019)
The MAGNUM survey: different gas properties in the outflowing and disk
components in nearby active galaxies with MUSE,
Mingozzi ., Cresci G., Venturi G., Marconi A., Mannucci F., Perna M.,
Belfiore F., Carniani S., Balmaverde B., Brusa M., Cicone C., Feruglio C.,
Gallazzi A., Mainieri V., Maiolino R., Nagao T., Nardini E., Sani E.,
Tozzi P., Zibetti S.
<Astron. Astrophys. 622, A146 (2019)>
=2019A&A...622A.146M 2019A&A...622A.146M (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, Seyfert
Keywords: galaxies: ISM - galaxies: Seyfert - galaxies: jets
Abstract:
We investigate the interstellar medium (ISM) properties of the disk
and outflowing gas in the central regions of nine nearby Seyfert
galaxies, all characterised by prominent single- or bi-conical
outflows. These objects are part of the MAGNUM (Measuring Active
Galactic Nuclei Under MUSE Microscope) survey, that aims at probing
their physical conditions and ionisation mechanism, by exploiting the
unprecedented sensitivity of the Multi Unit Spectroscopic Explorer
(MUSE), combined with its spatial and spectral coverage. Specifically,
we study the different properties of the gas in the disk and in the
outflow with spatially and kinematically resolved maps, by dividing
the strongest emission lines in velocity bins. We associate the core
of the lines to the disk, consistent with the stellar velocity, and
the redshifted and the blueshifted wings to the outflow. We measure
the reddening, density, ionisation parameter and dominant ionisation
source of the emitting gas for both components in each galaxy. We find
that the outflowing gas is characterised by higher values of density
and ionisation parameter than the disk, which presents a higher dust
extinction. Moreover, we distinguish high- and low-ionisation regions
across the portion of spatially resolved narrow line region (NLR)
traced by the outflowing gas. The high ionisation regions
characterised by the lowest [NII]/Hα and [SII]/Hα line
ratios, generally trace the innermost parts along the axis of the
emitting cones, where the [SIII]/[SII] line ratio is enhanced, while
the low ionisation ones follow the cone edges and/or the regions
perpendicular to the axis of the outflows, characterised also by a
higher [OIII] velocity dispersion. A possible scenario to explain
these features relies on the presence of two distinct population of
line emitting clouds: one is optically thin to the radiation and
characterised by the highest excitation, while the other, optically
thick, is impinged by a filtered - and thus harder - radiation field,
which generates strong low-excitation lines. The highest values of
[NII]/Hα and [SII]/Hα line ratios may be due to shocks
and/or a hard filtered radiation field from the AGN.
Description:
Extinction, density and ionisation derived for the MAGNUM galaxies
('gal') Centaurus A, Circinus, IC5063, NGC1068, NGC1365, NGC1386,
NGC2992, NGC4945 and NGC5643. The extinction Av is derived from the
Balmer decrement Hα/Hβ, assuming a Calzetti et al.
(2000ApJ...533..682C 2000ApJ...533..682C) attenuation law and a fixed temperature of
104K. The density is estimated through the [SII] λ6717,31
line ratio, using the Osterbrock & Ferland (2006) model, sensible to
the density variations in the range 50cm-3<ne<5000cm-3,
assuming a temperature of 104K. The ionisation is given by the
[SIII]9069,9532/[SII]6717,31 ratio, since it is a proxy for the
ionisation parameter (e.g., Diaz et al., 2000MNRAS.318..462D 2000MNRAS.318..462D).
Objects:
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RA (ICRS) DE Designation(s)
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13 25 27.62 -43 01 08.8 CEN A = NAME Centaurus A
14 13 09.91 -65 20 20.5 Cir = NAME Circinus Galaxy
20 52 02.33 -57 04 07.6 IC5063 = IC 5063
02 42 40.77 -00 00 47.8 NGC1068 = M 77
03 33 36.46 -36 08 26.4 NGC1365 = NGC 1365
03 36 46.24 -35 59 57.4 NGC1386 = NGC 1386
09 45 42.04 -14 19 34.9 NGC2992 = NGC 2992
13 05 27.28 -49 28 04.4 NGC4945 = NGC 4945
14 32 40.78 -44 10 28.6 NGC5643 = NGC 5643
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 84 27 List of fits images
fits/* . 27 Individual fits images
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 22 F3.1 arcsec/pix scale Scale of the image
24- 26 I3 --- Nx Number of pixels along X-axis
28- 30 I3 --- Ny Number of pixels along Y-axis
32- 34 I3 Kibyte size Size of FITS file
36- 61 A26 --- FileName Name of FITS file, in subdirectory fits
63- 84 A22 --- Title Title of the FITS file
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Acknowledgements:
Matilde Mingozzi, matilde.mingozzi2(at)unibo.it
(End) M. Mingozzi [Bologna Univ, Arcetri Obs.], P. Vannier [CDS] 28-Nov-2018