29 research outputs found
Larger in the disc of isolated active spiral galaxies than in their non-active twins
We present a comparison of the spin parameter , measured in a
region dominated by the galaxy disc, between 20 pairs of nearby
(0.005z0.03) seemingly isolated twin galaxies differing in nuclear
activity. We find that 80--82% of the active galaxies show higher values of
than their corresponding non-active twin(s), indicating larger
rotational support in the AGN discs. This result is driven by the 11 pairs of
unbarred galaxies, for which 100% of the AGN show larger than their
twins. These results can be explained by a more efficient angular momentum
transfer from the inflowing gas to the disc baryonic matter in the case of the
active galaxies. This gas inflow could have been induced by disc or bar
instabilities, although we cannot rule out minor mergers if these are prevalent
in our active galaxies. This result represents the first evidence of
galaxy-scale differences between the dynamics of active and non-active isolated
spiral galaxies of intermediate stellar masses (10
M) in the Local Universe.Comment: 11 pages, 7 figures. Accepted for publication in A&A Letter
Observational hints of radial migration in disc galaxies from CALIFA
Context. According to numerical simulations, stars are not always kept at their birth galactocentric distances but they have a tendency to migrate. The importance of this radial migration in shaping galactic light distributions is still unclear. However, if radial migration is indeed important, galaxies with different surface brightness (SB) profiles must display differences in their stellar population properties.
Aims: We investigate the role of radial migration in the light distribution and radial stellar content by comparing the inner colour, age, and metallicity gradients for galaxies with different SB profiles. We define these inner parts, avoiding the bulge and bar regions and up to around three disc scale lengths (type I, pure exponential) or the break radius (type II, downbending; type III, upbending).
Methods: We analysed 214 spiral galaxies from the CALIFA survey covering different SB profiles. We made use of GASP2D and SDSS data to characterise the light distribution and obtain colour profiles of these spiral galaxies. The stellar age and metallicity profiles were computed using a methodology based on full-spectrum fitting techniques (pPXF, GANDALF, and STECKMAP) to the Integral Field Spectroscopic CALIFA data.
Results: The distributions of the colour, stellar age, and stellar metallicity gradients in the inner parts for galaxies displaying different SB profiles are unalike as suggested by Kolmogorov-Smirnov and Anderson-Darling tests. We find a trend in which type II galaxies show the steepest profiles of all, type III show the shallowest, and type I display an intermediate behaviour.
Conclusions: These results are consistent with a scenario in which radial migration is more efficient for type III galaxies than for type I systems, where type II galaxies present the lowest radial migration efficiency. In such a scenario, radial migration mixes the stellar content, thereby flattening the radial stellar properties and shaping different SB profiles. However, in light of these results we cannot further quantify the importance of radial migration in shaping spiral galaxies, and other processes, such as recent star formation or satellite accretion, might play a role
The CaT strength in Seyfert nuclei revisited: analyzing young stars and non-stellar light contributions to the spectra
In a former paper (Garcia-Rissmann et al. 2005; hereafter Paper I), we have
presented spectra of 64 active, 9 normal and 5 Starburst galaxies in the region
around the near-IR Calcium triplet absorption lines and the [SIII]9069 line. In
the present paper we analyze the CaT strength (WCaT), and kinematical products
derived in that study, namely stellar and ionized gas velocity dispersions. Our
main results may be summarized as follows: (1) Seyfert 2s show no sign of
dilution in WCaT with respect to the values spanned by normal galaxies, even
when optical absorption lines such as the CaII K band at 3933 A are much weaker
than in old, bulge-like stellar populations. (2) The location of Seyfert 2s in
the WCaT-WCaK plane is consistent with evolutionary synthesis models. The
implication is that the source responsible for the dilution of optical lines in
these AGN is a young stellar population, rather than an AGN featureless
continuum, confirming the conclusion of the pioneer study of Terlevich, Diaz &
Terlevich. (3) In Seyfert 1s, both W[SIII] and WCaT tend to be diluted due to
the presence of a non-stellar component, in agreement with the unification
paradigm. (4) A comparison of stellar and gas velocity dispersions confirms the
existence of a correlation between the typical velocities of stars and clouds
of the Narrow Line Region. The strength and scatter around this correlation are
similar to those previously obtained from the [OIII]5007 line width.Comment: 14 pages, 15 figures. Paper accepted for publication in MNRA
Stellar kinematics across the Hubble sequence in the CALIFA survey: general properties and aperture corrections
We would like to thank the anonymous referee for constructive comments that helped improve some aspects of the original manuscript.
We are also grateful to the DiskMass survey team for sharing their data with
us for the spectral resolution tests, and to Marc Verheijen and Kyle Westfall
in particular for in-depth discussions on the topic. This study makes use of
the data provided by the Calar Alto Legacy Integral Field Area (CALIFA) survey (http://califa.caha.es). Based on observations collected at the Centro AstronĂłmico Hispano AlemĂĄn (CAHA) at Calar Alto, operated jointly by
the Max-Planck-Institut fĂŒr Astronomie and the Instituto de AstrofĂsica de AndalucĂa (CSIC). CALIFA is the first legacy survey being performed at Calar Alto.
The CALIFA collaboration would like to thank the IAA-CSIC and MPIA-MPG
as major partners of the observatory, and CAHA itself, for the unique access to
telescope time and support in manpower and infrastructures. The CALIFA collaboration thanks also the CAHA staff for the dedication to this project.We present the stellar kinematic maps of a large sample of galaxies from the integral-field spectroscopic survey CALIFA. The sample
comprises 300 galaxies displaying a wide range of morphologies across the Hubble sequence, from ellipticals to late-type spirals.
This dataset allows us to homogeneously extract stellar kinematics up to several effective radii. In this paper, we describe the level of
completeness of this subset of galaxies with respect to the full CALIFA sample, as well as the virtues and limitations of the kinematic
extraction compared to other well-known integral-field surveys. In addition, we provide averaged integrated velocity dispersion radial
profiles for different galaxy types, which are particularly useful to apply aperture corrections for single aperture measurements or
poorly resolved stellar kinematics of high-redshift sources. The work presented in this paper sets the basis for the study of more
general properties of galaxies that will be explored in subsequent papers of the survey.J. F.-B. from grant AYA2013-
48226-C3-1-P from the Spanish Ministry of Economy and Competitiveness
(MINECO). J.F.-B. and G.v.d.V. from the FP7 Marie Curie Actions of the European Commission, via the Initial Training Network DAGAL under REA grant
agreement number 289313. J.M.-A. and V.W. acknowledge support from the European Research Council Starting Grant (SEDMorph P.I. V. Wild). P.S.-B. acknowledge financial support from the BASAL CATA Center for Astrophysics
and Associated Technologies through grant PFB-06. R.M.G.D. from grant
AYA2014-57490-P. R.G.-B, R.M.G.D. and E.P. acknowledge support from the
project JA-FQM-2828. C.J.W. acknowledges support through the Marie Curie
Career Integration Grant 303912. L.G. from the Ministry of Economy, Development, and Tourismâs Millennium Science Initiative through grant IC120009
awarded to The Millennium Institute of Astrophysics (MAS), and CONICYT
through FONDECYT grant 3140566. I.M. from grant AYA2013-42227-P
The CALIFA survey across the Hubble sequence Spatially resolved stellar population properties in galaxies
Various different physical processes contribute to the star formation and stellar mass assembly histories of galaxies. One important approach to
understanding the significance of these different processes on galaxy evolution is the study of the stellar population content of todayâs galaxies
in a spatially resolved manner. The aim of this paper is to characterize in detail the radial structure of stellar population properties of galaxies
in the nearby universe, based on a uniquely large galaxy sample, considering the quality and coverage of the data. The sample under study was
drawn from the CALIFA survey and contains 300 galaxies observed with integral field spectroscopy. These cover a wide range of Hubble types,
from spheroids to spiral galaxies, while stellar masses range from M? ⌠109
to 7 Ă 1011 M . We apply the fossil record method based on spectral
synthesis techniques to recover the following physical properties for each spatial resolution element in our target galaxies: the stellar mass surface
density (”?), stellar extinction (AV ), light-weighted and mass-weighted ages (hlog ageiL, hlog ageiM), and mass-weighted metallicity (hlog Z?iM).
To study mean trends with overall galaxy properties, the individual radial profiles are stacked in seven bins of galaxy morphology (E, S0, Sa, Sb,
Sbc, Sc, and Sd). We confirm that more massive galaxies are more compact, older, more metal rich, and less reddened by dust. Additionally, we
find that these trends are preserved spatially with the radial distance to the nucleus. Deviations from these relations appear correlated with Hubble
type: earlier types are more compact, older, and more metal rich for a given M?, which is evidence that quenching is related to morphology, but
not driven by mass. Negative gradients of hlog ageiL are consistent with an inside-out growth of galaxies, with the largest hlog ageiL gradients in
SbâSbc galaxies. Further, the mean stellar ages of disks and bulges are correlated and with disks covering a wider range of ages, and late-type
spirals hosting younger disks. However, age gradients are only mildly negative or flat beyond R ⌠2 HLR (half light radius), indicating that star
formation is more uniformly distributed or that stellar migration is important at these distances. The gradients in stellar mass surface density depend
mostly on stellar mass, in the sense that more massive galaxies are more centrally concentrated. Whatever sets the concentration indices of galaxies
obviously depends less on quenching/morphology than on the depth of the potential well. There is a secondary correlation in the sense that at the
same M? early-type galaxies have steeper gradients. The ”? gradients outside 1 HLR show no dependence on Hubble type. We find mildly negative
hlog Z?iM gradients, which are shallower than predicted from models of galaxy evolution in isolation. In general, metallicity gradients depend on
stellar mass, and less on morphology, hinting that metallicity is affected by both â the depth of the potential well and morphology/quenching.
Thus, the largest hlog Z?iM gradients occur in Milky Way-like SbâSbc galaxies, and are similar to those measured above the Galactic disk. Sc
spirals show flatter hlog Z?iM gradients, possibly indicating a larger contribution from secular evolution in disks. The galaxies from the sample
have decreasing-outward stellar extinction; all spirals show similar radial profiles, independent from the stellar mass, but redder than E and S0.
Overall, we conclude that quenching processes act in manners that are independent of mass, while metallicity and galaxy structure are influenced
by mass-dependent processes.CALIFA is the first legacy survey carried out at Calar Alto.
The CALIFA collaboration would like to thank the IAA-CSIC and MPIA-MPG
as major partners of the observatory, and CAHA itself, for the unique access
to telescope time and support in manpower and infrastructures. We also thank
the CAHA staff for the dedication to this project. Support from the Spanish
Ministerio de EconomĂa y Competitividad, through projects AYA2010-15081 (PI
R.G.D.), and Junta de AndalucĂa FQ1580 (PI R.G.D.), AYA2010-22111-C03-03,
and AYA2010-10904E (S.F.S.). We also thank the Viabilidad, Diseño, Acceso y
Mejora funding program, ICTS-2009-10, for funding the data acquisition of this
project. R.C.F. thanks the hospitality of the IAA and the support of CAPES and
CNPq. R.G.D. acknowledges the support of CNPq (Brazil) through Programa
Ciencia sem Fronteiras (401452/2012-3). A.G. acknowledges support from
EU FP7/2007-2013 under grant agreement n.267251 (AstroFIt) and from the
EU Marie Curie Integration Grant âSteMaGEâ Nr. PCIG12-GA-2012-326466.
C.J.W. acknowledges support through the Marie Curie Career Integration Grant
303912. E.P. acknowledges support from the Guillermo Haro program at
INAOE. Support for L.G. is provided by the Ministry of Economy, Development,
and Tourismâs Millennium Science Initiative through grant IC120009, awarded
to The Millennium Institute of Astrophysics, MAS. L.G. acknowledges support by CONICYT through FONDECYT grant 3140566. J.I.P. acknowledges
financial support from the Spanish MINECO under grant AYA2010-21887-
C04-01 and from Junta de AndalucĂa Excellence Project PEX2011-FQM7058.
I.M., J.M. and A.d.O. acknowledge support from the project AYA2013-42227-P.
RAM is funded by the Spanish program of International Campus of Excellence
Moncloa (CEI). J.M.A. acknowledges support from the European Research
Council Starting Grant (SEDmorph; P.I. V. Wild
CALIFA, the Calar Alto Legacy Integral Field Area survey III. Second public data release
CALIFA is the first legacy survey being performed at Calar Alto. The CALIFA collaboration would like to thank the IAA-CSIC and MPIA-MPG as major partners of the observatory, and CAHA itself, for the unique access to telescope time and support in manpower and infrastructures. The CALIFA collaboration thanks also the CAHA staff for the dedication to this project. R.G.B., R.G.D., and E.P. are supported by the Spanish Ministerio de Ciencia e Innovacion under grant AYA2010-15081. S.Z. is supported by the EU Marie Curie Integration Grant "SteMaGE" Nr. PCIG12-GA-2012-326466 (Call Identifier: FP7-PEOPLE-2012 CIG). J.F.B. acknowledges support from grants AYA2010-21322-C03-02 and AIB-2010-DE-00227 from the Spanish Ministry of Economy and Competitiveness (MINECO), as well as from the FP7 Marie Curie Actions of the European Commission, via the Initial Training Network DAGAL under REA grant agreement number 289313. Support for L.G. is provided by the Ministry of Economy, Development, and Tourism's Millennium Science Initiative through grant IC12009, awarded to The Millennium Institute of Astrophysics, M.A.S.L.G. also acknowledges support by CONICYT through FONDECYT grant 3140566. A.G. acknowledges support from the FP7/2007-2013 under grant agreement n. 267251 (AstroFIt). J.M.G. acknowledges support from the Fundacao para a Ciencia e a Tecnologia (FCT) through the Fellowship SFRH/BPD/66958/2009 from FCT (Portugal) and research grant PTDC/FIS-AST/3214/2012. RAM was funded by the Spanish programme of International Campus of Excellence Moncloa (CEI). J.M.A. acknowledges support from the European Research Council Starting Grant (SEDmorph; P.I. V. Wild). I.M., J.M. and A.d.O. acknowledge the support by the projects AYA2010-15196 from the Spanish Ministerio de Ciencia e Innovacion and TIC 114 and PO08-TIC-3531 from Junta de Andalucia. AMI acknowledges support from Agence Nationale de la Recherche through the STILISM project (ANR-12-BS05-0016-02). M.M. acknowledges financial support from AYA2010-21887-C04-02 from the Ministerio de Economia y Competitividad. P.P. is supported by an FCT Investigador 2013 Contract, funded by FCT/MCTES (Portugal) and POPH/FSE (EC). P.P. acknowledges support by FCT under project FCOMP-01-0124-FEDER-029170 (Reference FCT PTDC/FIS-AST/3214/2012), funded by FCT-MEC (PIDDAC) and FEDER (COMPETE). T.R.L. thanks the support of the Spanish Ministerio de Educacion, Cultura y Deporte by means of the FPU fellowship. PSB acknowledges support from the Ramon y Cajal program, grant ATA2010-21322-C03-02 from the Spanish Ministry of Economy and Competitiveness (MINECO). C.J.W. acknowledges support through the Marie Curie Career Integration Grant 303912. V.W. acknowledges support from the European Research Council Starting Grant (SEDMorph P.I. V. Wild) and European Career Re-integration Grant (Phiz-Ev P.I.V. Wild). Y.A. acknowledges financial support from the Ramon y Cajal programme (RyC-2011-09461) and project AYA2013-47742-C4-3-P, both managed by the Ministerio de Economia y Competitividad, as well as the "Study of Emission-Line Galaxies with Integral-Field Spectroscopy" (SELGIFS) programme, funded by the EU (FP7-PEOPLE-2013-IRSES-612701) within the Marie-Sklodowska-Curie Actions scheme. We thank the referee David Wilman for very useful comments that improved the presentation of the paper.This paper describes the Second Public Data Release (DR2) of the Calar Alto Legacy Integral Field Area (CALIFA) survey. The data for 200 objects
are made public, including the 100 galaxies of the First Public Data Release (DR1). Data were obtained with the integral-field spectrograph
PMAS/PPak mounted on the 3.5 m telescope at the Calar Alto observatory. Two different spectral setups are available for each galaxy, (i) a lowresolution V500 setup covering the wavelength range 3745â7500 Ă
with a spectral resolution of 6.0 Ă
(FWHM); and (ii) a medium-resolution
V1200 setup covering the wavelength range 3650â4840 Ă
with a spectral resolution of 2.3 Ă
(FWHM). The sample covers a redshift range between
0.005 and 0.03, with a wide range of properties in the colorâmagnitude diagram, stellar mass, ionization conditions, and morphological types. All
the cubes in the data release were reduced with the latest pipeline, which includes improved spectrophotometric calibration, spatial registration,
and spatial resolution. The spectrophotometric calibration is better than 6% and the median spatial resolution is 200 : 4. In total, the second data
release contains over 1.5 million spectra.Instituto de Salud Carlos III
Spanish Government
AYA2010-15081
AYA2010-15196European Union (EU)
PCIG12-GA-2012-326466Spanish Ministry of Economy and Competitiveness (MINECO)
AYA2010-21322-C03-02
AIB-2010-DE-00227FP7 Marie Curie Actions of the European Commission, via the Initial Training Network DAGAL under REA
289313Ministry of Economy, Development, and Tourism's Millennium Science Initiative
IC12009Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
CONICYT FONDECYT
3140566Fundacao para a Ciencia e a Tecnologia (FCT) from FCT (Portugal)
SFRH/BPD/66958/2009Spanish programme of International Campus of Excellence Moncloa (CEI)European Research Council (ERC)Junta de Andalucia
TIC 114
PO08-TIC-3531French National Research Agency (ANR)
ANR-12-BS05-0016-02Spanish Government
AYA2010-21887-C04-02FCT Investigador Contract - FCT/MCTES (Portugal)European Commission Joint Research Centre
European Social Fund (ESF)FCT - FCT-MEC (PIDDAC)
FCOMP-01-0124-FEDER-029170
FCT PTDC/FIS-AST/3214/2012European Union (EU)Spanish Ministerio de Educacion, Cultura y Deporte by FPURamon y Cajal program from the Spanish Ministry of Economy and Competitiveness (MINECO)
ATA2010-21322-C03-02European Union (EU)
303912European Career Re-integration GrantSpanish Government
RyC-2011-09461
AYA2013-47742-C4-3-PEuropean Union (EU)
FP7-PEOPLE-2013-IRSES-612701PTDC/FIS-AST/3214/2012Science & Technology Facilities Council (STFC)
ST/K000985/
The CALIFA view on stellar angular momentum across the Hubble sequence
We present the apparent stellar angular momentum over the optical extent of 300 galaxies across the Hubble sequence, using integral-field spectroscopic (IFS) data from the CALIFA survey. Adopting the same λR parameter previously used to distinguish between slow and fast rotating early-type (elliptical and lenticular) galaxies, we show that spiral galaxies are almost all fast rotators, as expected. Given the extent of our data, we provide relations for λR measured in different apertures (e.g. fractions of the effective radius: 0.5 Re, Re, 2 Re), including conversions to long-slit 1D apertures. Our sample displays a wide range of λRe values, consistent with previous IFS studies. The fastest rotators are dominated by relatively massive and highly star-forming Sb galaxies, which preferentially reside in the main star-forming sequence. These galaxies reach λRe values ofâŒ0.85, are the largest galaxies at a given mass, while also displaying some of the strongest stellar population gradients. Compared to the population of S0 galaxies, our findings suggest that fading may not be the dominant mechanism transforming spirals into lenticulars. Interestingly, we find that λRe decreases for late-type Sc and Sd spiral galaxies, with values than occasionally set them in the slow-rotator regime. While for some of them this can be explained by their irregular morphologies and/or face-on configurations, others are edge-on systems with no signs of significant dust obscuration. The latter are typically at the low-mass end, but this does not explain their location in the classical (V/Ï,Δ) and (λRe, Δ) diagrams. Our initial investigations, based on dynamical models, suggest that these are dynamically hot disks, probably influenced by the observed important fraction of dark matter within Re.PostprintPeer reviewe
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Dietary αâLinolenic Acid, Marine Ïâ3 Fatty Acids, and Mortality in a Population With High Fish Consumption: Findings From the PREvenciĂłn con DIeta MEDiterrĂĄnea (PREDIMED) Study
Background: Epidemiological evidence suggests a cardioprotective role of αâlinolenic acid (ALA), a plantâderived Ïâ3 fatty acid. It is unclear whether ALA is beneficial in a background of high marine Ïâ3 fatty acids (longâchain nâ3 polyunsaturated fatty acids) intake. In persons at high cardiovascular risk from Spain, a country in which fish consumption is customarily high, we investigated whether meeting the International Society for the Study of Fatty Acids and Lipids recommendation for dietary ALA (0.7% of total energy) at baseline was related to allâcause and cardiovascular disease mortality. We also examined the effect of meeting the society's recommendation for longâchain nâ3 polyunsaturated fatty acids (â„500 mg/day). Methods and Results: We longitudinally evaluated 7202 participants in the PREvenciĂłn con DIeta MEDiterrĂĄnea (PREDIMED) trial. Multivariableâadjusted Cox regression models were fitted to estimate hazard ratios. ALA intake correlated to walnut consumption (r=0.94). During a 5.9ây followâup, 431 deaths occurred (104 cardiovascular disease, 55 coronary heart disease, 32 sudden cardiac death, 25 stroke). The hazard ratios for meeting ALA recommendation (n=1615, 22.4%) were 0.72 (95% CI 0.56â0.92) for allâcause mortality and 0.95 (95% CI 0.58â1.57) for fatal cardiovascular disease. The hazard ratios for meeting the recommendation for longâchain nâ3 polyunsaturated fatty acids (n=5452, 75.7%) were 0.84 (95% CI 0.67â1.05) for allâcause mortality, 0.61 (95% CI 0.39â0.96) for fatal cardiovascular disease, 0.54 (95% CI 0.29â0.99) for fatal coronary heart disease, and 0.49 (95% CI 0.22â1.01) for sudden cardiac death. The highest reduction in allâcause mortality occurred in participants meeting both recommendations (hazard ratio 0.63 [95% CI 0.45â0.87]). Conclusions: In participants without prior cardiovascular disease and high fish consumption, dietary ALA, supplied mainly by walnuts and olive oil, relates inversely to allâcause mortality, whereas protection from cardiac mortality is limited to fishâderived longâchain nâ3 polyunsaturated fatty acids. Clinical Trial Registration URL: http://www.Controlled-trials.com/. Unique identifier: ISRCTN35739639
Chitosans as bioactive macromolecules to protect economically relevant crops from their main pathogens
ABSTRACT Studies were carried out as part of the Agriculture Biotechnology program, to prepare and characterize chemically and biologically different chitosans obtained from Cuban lobster chitin. Chitosan polymers were subjected to acid and enzymatic hydrolysis by using low-cost commercial enzymatic preparations, and the resulting oligosaccharide mixtures were further characterized. Their potential antimicrobial activities were also evaluated versus fungi and oomycetes, also testing their ability to induce defensive and protective responses in tobacco and rice plants against two economically relevant pests, Phytophthora nicotianae and Pyricularia grisea, respectively. With the aid of international collaboration, different oligochitosans mixtures were compared for activating defensive responses in suspension cultures of Arabidopsis thaliana cells. These results bring knowledge on the physical-chemical properties of the chitosans obtained, such as molar mass and acetylation grade, and their influence on activating defensive responses, the inhibition of growth in pathogens and the induction of resistance in tobacco and rice plants. Some of these chitosan derivatives were selected as possible active components to protect both type of cultivars, being applied at field-scale to evaluate their effects for the main natural pathogens and bringing very promising results. This research allowed us to establish a methodology for preparing oligochitosans, and results shown inhere were part of BSc, MSc and PhD theses, and were also published in more than 20 scientific papers and presented in more than 40 scientific conferences
Observational hints of radial migration in disc galaxies from CALIFA
Context. According to numerical simulations, stars are not always kept at their birth galactocentric distances but they have a tendency to migrate. The importance of this radial migration in shaping galactic light distributions is still unclear. However, if radial migration is indeed important, galaxies with different surface brightness (SB) profiles must display differences in their stellar population properties. Aims. We investigate the role of radial migration in the light distribution and radial stellar content by comparing the inner colour, age, and metallicity gradients for galaxies with different SB profiles. We define these inner parts, avoiding the bulge and bar regions and up to around three disc scale lengths (type I, pure exponential) or the break radius (type II, downbending; type III, upbending). Methods. We analysed 214 spiral galaxies from the CALIFA survey covering different SB profiles. We made use of GASP2D and SDSS data to characterise the light distribution and obtain colour profiles of these spiral galaxies. The stellar age and metallicity profiles were computed using a methodology based on full-spectrum fitting techniques (pPXF, GANDALF, and STECKMAP) to the Integral Field Spectroscopic CALIFA data. Results. The distributions of the colour, stellar age, and stellar metallicity gradients in the inner parts for galaxies displaying different SB profiles are unalike as suggested by Kolmogorov-Smirnov and Anderson-Darling tests. We find a trend in which type II galaxies show the steepest profiles of all, type III show the shallowest, and type I display an intermediate behaviour. Conclusions. These results are consistent with a scenario in which radial migration is more efficient for type III galaxies than for type I systems, where type II galaxies present the lowest radial migration efficiency. In such a scenario, radial migration mixes the stellar content, thereby flattening the radial stellar properties and shaping different SB profiles. However, in light of these results we cannot further quantify the importance of radial migration in shaping spiral galaxies, and other processes, such as recent star formation or satellite accretion, might play a role.© 2017 ESO.This research has been supported by the Spanish Ministry of Science and Innovation (MICINN) under grants AYA2014-53506-P, AYA2007-67625-C02-02, AYA2014-56795-P and Consolider-Ingenio CSD2010-00064; and by the Junta de Andalucia (FQM-108). L.G. was supported in part by the US National Science Foundation under Grant AST-1311862. I.M. would like to thank support under grants AYA2013-42227-P and AYA2016-76682-C3-1-P. S.Z. has been supported by the EU Marie Curie Career Integration Grant SteMaGE No. PCIG12-GA-2012-326466 (Call Identifier: FP7-PEOPLE-2012 CIG). J.F.B. thanks the support received under grant AYA2016-77237-C3-1-P. A.d.L.C. acknowledges support from the CONACyT-125180, DGAPA-IA100815 and DGAPA-IA101217 projects. R.A.M. acknowledges support by the Swiss National Science Foundation. J.M.A. thanks support from the support from the European Research Council Starting Grant (SEDmorph; P.I. V. Wild) and MINECO through the grant AYA2013-43188-P.Peer Reviewe