J/MNRAS/492/3073 CALIFA galaxies hosting an AGN (Lacerda+, 2020)
Galaxies hosting an active galactic nucleus: a view from the CALIFA survey.
Lacerda E.A.D., Sanchez S.F., Cid Fernandes R., Lopez-Coba C.,
Espinosa-Ponce C., Galbany L.
<Mon. Not. R. Astron. Soc. 492, 3073 (2020)>
=2020MNRAS.492.3073L 2020MNRAS.492.3073L (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Photometry, SDSS ; Abundances ;
Stars, masses ; Stars, ages
Keywords: galaxies: evolution - galaxies: nuclei - galaxies: star formation
Abstract:
We study the presence of optically-selected Active Galactic Nuclei
(AGNs) within a sample of 867 galaxies extracted from the extended
Calar-Alto Legacy Integral Field spectroscopy Area (eCALIFA) spanning
all morphological classes. We identify 10 Type-I and 24 Type-II AGNs,
amounting to ∼4 per cent of our sample, similar to the fraction
reported by previous explorations in the same redshift range. We
compare the integrated properties of the ionized and molecular gas,
and stellar population of AGN hosts and their non-active counterparts,
combining them with morphological information. The AGN hosts are found
in transitory parts (i.e. green-valley) in almost all analysed
properties which present bimodal distributions (i.e. a region where
reside star-forming galaxies and another with quiescent/retired ones).
Regarding morphology, we find AGN hosts among the most massive
galaxies, with enhanced central stellar-mass surface density in
comparison to the average population at each morphological type.
Moreover, their distribution peaks at the Sab-Sb classes and none are
found among very late-type galaxies (>Scd). Finally, we inspect how
the AGN could act in heir hosts regarding the quenching of
star-formation. The main role of the AGN in the quenching process
appears to be the removal (or heating) of molecular gas, rather than
an additional suppression of the already observed decrease of the
star-formation efficiency from late-to-early type galaxies.
Description:
Observations are made using the V500 setup of the Integral Field Unity
instrument (PMAS/PPAK) at the Calar Alto 3.5m telescope.
This configuration results in a spectral range covering
3745–7500Å with a nominal resolution of
λ/Δλ∼850 at 5000Å (FWHM∼6Å). In order to
characterize which galaxies host an AGN in comparison with the non
active ones, the data were analyzed using the pipelines FITS3D+PIPE3D
to derive the properties of the underlying stellar population and the
ionized gas.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 917 34 CALIFA AGN hosts
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See also:
J/A+A/576/A135 : CALIFA DR2 (Garcia-Benito+, 2015)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- DBName CALIFA database Name (DBName)
15- 27 A13 --- Galaxy Galaxy name (GalaxyName)
29 I1 --- AGNFlag [1/2] AGN type (AGN_FLAG) (1)
31- 49 F19.15 deg RAdeg Right Ascension (J2000) (RA)
51- 70 F20.16 deg DEdeg Declination (J2000) (DEC)
72- 92 F21.19 --- zstars Redshift (z_stars)
94- 96 A3 --- Morph Morphology (Morph)
98-116 F19.16 --- SNbroad Signal-to-Noise of Ha broad
component (SN_broad)
118-136 F19.17 mag gmag g-band magnitude (g_r)
138-155 F18.15 mag e_gmag sigma of the g-band magnitude
(egr)
157-175 F19.17 mag gmagNC g-band magnitude without
considering the central 3x3" of
the galaxy (grNC)
177-194 F18.15 mag e_gmagNC sigma of the g-band magnitude
without considering the central
3x3" of the galaxy (egr_NC)
196-214 F19.15 mag rMAG r-band absolute magnitude
(Mabs_r)
216-233 F18.16 mag e_rMAG sigma of the r-band absolute
magnitude (eMabsr)
235-253 F19.15 mag rMAGNC r-band absolute magnitude without
considering the central 3x3" of
the galaxy (MabsrNC)
255-272 F18.16 mag e_rMAGNC sigma of the r-band absolute
magnitude without considering
the central 3x3" of the galaxy
(eMabsr_NC)
274-294 F21.18 [-] log[NII/Ha]c Central 3x3" value of the
[NII]/Ha emission line ratio
in log10 (logNIIHa_cen)
296-315 F20.18 [-] s_log[NII/Ha]c sigma of the central 3x3" value
of the [NII]/Ha emission line
ratio (logNIIHacenstddev)
317-336 F20.17 [-] log[SII/Ha]cmean Central 3x3" value of the
[SII]/Ha emission line ratio
in log10 (logSIIHacenmean)
338-356 F19.16 [-] log[OI/Ha]c Central 3x3" value of the [OI]/Ha
emission line ratio in log10
(logOIHa_cen)
358-376 F19.17 [-] e_log[OI/Ha]c sigma of the central 3x3" value
of the [OI]/Ha emission line
ratio in log10 (elogOIHacen)
378-396 F19.17 [-] log[OIII/Hb]cmean Central 3x3" value of the
[OIII]/Hb emission line ratio
in log10 (logOIIIHbcenmean)
398-417 F20.16 0.1nm EWHacmean Equivalent width of Ha at the
central 3x3" region (Angstroem)
(EWHacen_mean)
419-437 F19.16 0.1nm EWHaRe Equivalent width of Ha at the
effective radius (Angstroem)
(EWHaRe)
439-457 F19.16 0.1nm e_EWHaRe sigma of the equivalent width of
Ha at the effective radius
(Angstroem) (eEWHa_Re)
459-476 F18.15 [Msun] logMcorr Integrated stellar-mass in
log10 (logMasscorr)
478-496 F19.17 [Msun] e_logMcorr sigma of the integrated
stellar-mass in log10
(error_Mass)
498-515 F18.16 --- C Galaxy concentration index
(R90/R50) (C)
517-536 F20.18 --- e_C sigma of the galaxy concentration
index (e_C)
538-555 F18.16 [Msun/pc2] logSigmaMassc Central stellar-mass surface
density in log10
(SigmaMasscen)
557-575 F19.17 [Msun/pc2] e_logSigmaMassc ? sigma of the central
stellar-mass surface density in
log10 (eSigmaMass_cen)
577-595 F19.17 --- rat-vel-sigma Velocity-to-velocity dispersion
ratio integrated up to the
effective radius (ratvelsigma)
597-614 F18.16 --- e_rat-vel-sigma sigma of the velocity-to-velocity
dispersion ratio
(eratvel_sigma)
616-632 F17.15 [yr] logAgeLWRefit Light-weighted stellar mean age
at the effective radius in
log10 (AgeLWRe_fit)
634-653 F20.18 [yr] e_logAgeLWRefit sigma of the light-weighted
stellar mean age at the
effective radius in log10
(eAgeLWRefit)
655-671 F17.15 [yr] logAgeMWRefit Mass-weighted stellar mean age at
the effective radius in log10
(AgeMWRe_fit)
673-691 F19.17 [yr] e_logAgeMWRefit sigma of the mass-weighted
stellar mean age at the
effective radius in log10
(eAgeMWRefit)
693-714 F22.19 [Sun] logZHMWRefit Mass-weighted stellar-metallicity
at the effective radius in log10
(ZHMWRe_fit)
716-736 F21.19 [Sun] e_logZHMWRefit sigma of the mass-weighted
stellar-metallicity at the
effective radius in log10
(eZHMWRefit)
738-754 F17.15 --- OHRefitt2 ? Oxygen abundance from the t2
calibrator at the effective
radius in 12+log10(O/H)
(OHRefit_t2)
756-775 F20.18 --- e_OHRefitt2 ? sigma of the oxygen abundance
from the t2 calibrator at the
effective radius in
12+log10(O/H) (eOHRefitt2)
777-796 F20.17 [Msun/yr] logSFRSF Integrated star-formation rate
for the SF population in log10
(logSFRSF)
798-816 F19.17 [Msun/yr] e_logSFRSF sigma of the integrated
star-formation rate in log10
(e_lSFR)
818-836 F19.15 [1/yr] logsSFRSF Specific star-formation rate for
the SF population in log10
(sSFR_SF)
838-854 F17.15 [Msun] logMgas Integrated mass of the molecular
gas in log10(Msun)
(logMassgas)
856-875 F20.18 [Msun] e_logMgas sigma of the integrated mass of
the molecular gas in log10
(elogMass_gas)
877-897 F21.18 [yr] logtdeplogMgas Depletion time of the molecular
gas in log10
(logtdeplogMassgas)
899-917 F19.15 [1/yr] SFESFlogMgas Star-formation efficiency in
log10 (SFESFlogMassgas)
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Note (1): AGN type as follows:
1 = Type-I AGN
2 = Type-II AGN
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Acknowledgements:
Eduardo Lacerda, lacerda(at)astro.unam.mx
(End) Patricia Vannier [CDS] 22-Dec-2019