J/MNRAS/486/5075 Gas excitation and SFRs of 62 AGNs (do Nascimento+, 2019)
The first 62 AGN observed with SDSS-IV MaNGA.
IV. Gas excitation and star formation rate distributions.
do Nascimento J.C., Storchi-Bergmann T., Mallmann N.D., Riffel R.,
Ilha G.S., Riffel R.A., Rembold S.B., Schimoia J., da Costa L.N.,
Maia M.A.G., Machado A.D.
<Mon. Not. R. Astron. Soc., 486, 5075-5093 (2019)>
=2019MNRAS.486.5075D 2019MNRAS.486.5075D (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Radio lines
Keywords: galaxies: active
Abstract:
We present maps of the ionized gas flux distributions, excitation,
star formation rate (SFR), surface mass density ΣH+, and
obtain total values of SFR and ionized gas masses M for 62 active
galactic nuclei (AGN) observed with SDSS-IV MaNGA and compare them
with those of a control sample of 112 non-active galaxies. The most
luminous AGN - with L([OIII]λ5007)≥3.8x1040erg/s, and those
hosted by earlier type galaxies are dominated by Seyfert excitation
within 0.2 effective radius Re from the nucleus, surrounded by LINER
excitation or transition regions, while the less luminous and hosted
by later-type galaxies show equally frequent LINER and Seyfert
excitation within 0.2Re. The extent R of the region ionized by the
AGN follows the relation R∝L([OIII])0.5 - as in the case of
the broad-line region. The SFR distribution over the region ionized by
hot stars is similar for AGN and controls, while the integrated SFR -
in the range 10-3-10M☉/yr is also similar for the late-type
subsample, but higher in the AGN for 75 per cent of the early-type
subsample. We thus conclude that there is no signature of AGN
quenching star formation in the body of the galaxy in our sample. We
also find that 66 per cent of the AGN have higher ionized gas masses M
than the controls - in the range 105-3x107M☉ - while 75 per
cent of the AGN have higher ΣH+ within 0.2Re than the
control galaxies.
Description:
The sample studied in this paper comprises the first 62 AGN observed
with MaNGA and 112 control galaxies listed in Table 1. In summary, in
order to investigate the relation between the AGN and their host
galaxy properties, we have identified in the fourteenth data release
(DR14; Abolfathi et al. 2018ApJS..235...42A 2018ApJS..235...42A) all galaxies observed by
MaNGA whose emission-line ratios in the SDSS-III (Gunn et al.
2006AJ....131.2332G 2006AJ....131.2332G) single nuclear spectrum were dominated by
ionization by an active nucleus, as indicated in the BPT (Baldwin et
al. 1981PASP...93....5B 1981PASP...93....5B) diagnostic diagram. We have also used the
WHAN (Cid Fernandes et al. 2010MNRAS.403.1036C 2010MNRAS.403.1036C) diagnostic diagram in
the selection of the AGN, in order to avoid 'LIERs'. For each AGN,
Rembold et al. (2017MNRAS.472.4382R 2017MNRAS.472.4382R) (Paper I) have chosen two control
non-active galaxies matching the AGN host stellar mass, morphology,
distance, and inclination.
We have mapped the gas excitation, SFR, and ionized gas mass
distributions of 62 AGN host galaxies as compared with a control
sample of 112 galaxies using MaNGA-SDSS-IV data cubes. The sample
comprises 20 early-type, 38 late-type, and 4 galaxies in interaction
with a companion. In terms of the AGN luminosity, 17 have
L([OIII])λ5007>3.8x1040erg/s, that we have called high
luminosity, and 45 have lower luminosity than this (called
low-luminosity AGN).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 76 124 Parameters of the AGN hosts and control galaxies
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- AGN AGN host identification in the MaNGA
survey (1-NNNNNN)
10- 14 F5.2 [10+33W] logLOIII Logarithm of [OIII] line luminosity of
the AGN host
16- 19 F4.2 [10+33W] e_logLOIII Error on logLOIII
21- 24 F4.2 [kpc] logR ? Logarithm of the extent of AGN
excitation region of the AGN host
26- 29 F4.2 [Msun] logMgas Logarithm of the total ionized gas mass
of the AGN host
31- 34 F4.2 Msun/kpc2 Snuc Mean nuclear (within 0.2Re) ionized gas
surface mass density of the AGN host
36- 40 F5.2 [Msun/yr] SFR ? Logarithm of the total star formation
rate of the AGN host
42- 50 A9 --- CS Control galaxy identification in the
MaNGA survey
52- 55 F4.2 [10+33W] logLOIIICS ? Logarithm of [OIII] line luminosity of
the control galaxy
57- 60 F4.2 [10+33W] e_logLOIIICS ? Error on logLOIII
62- 65 F4.2 [Msun] logMgasCS Logarithm of the total ionized gas mass
of the control galaxy
67- 70 F4.2 Msun/kpc2 SnucCS Mean nuclear (within 0.2Re) ionized gas
surface mass density of the control
galaxy
72- 76 F5.2 [Msun/yr] SFRCS ? Logarithm of the total star formation
rate of the control galaxy
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History:
From electronic version of the journal
References:
Rembold et al., Paper I 2017MNRAS.472.4382R 2017MNRAS.472.4382R
Mallmann et al., Paper II 2018MNRAS.478.5491M 2018MNRAS.478.5491M
Ilha et al., Paper III 2019MNRAS.484..252I 2019MNRAS.484..252I
(End) Ana Fiallos [CDS] 28-Oct-2022