Stellar age gradients and inside-out star formation quenching in galaxy bulges

We thank the anonymous referee for valuable comments and suggestions. Additionally, we thank the EU for providing to Portugal a substantial fraction of the financial resources that allowed it to sustain a research infrastructure in astrophysics. Specifically, this work was carried out at an institute whose funding is provided to 85% by th e EU via the FCT (Fundacao para a Ciencia e a Tecnologia) apparatus, through European and national funding via FEDER through COMPETE by the grants UID/FIS/04434/2013 & POCI-01-0145-FEDER-007672 and PTDC/FIS-AST/3214/2012 & FCOMP01-0124-FEDER-029170. Additionally, this work was supported through FCT grants UID/FIS/04434/2019, UIDB/04434/2020 and UIDP/04434/2020. We further acknowledge support by European Community Programme (FP7/20072013) under grant agreement No. PIRSES-GA-2013-612701 (SELGIFS). We are grateful to Dr. Dimitri Gadotti, Prof. Daniel Schaerer and Dr. Andrew Humphrey for valuable comments. I. B. was supported by the FCT PhD::SPACE Doctoral Network (PD/00040/2012) through the fellowship PD/BD/52707/2014 funded by FCT (Portugal) and POPH/FSE (EC) and by the fellowship CAUP07/2014-BI in the context of the FCT project PTDC/FIS-AST/3214/2012 & FCOMP-01-0124-FEDER-029170. P. P. was supported through Investigador FCT contract IF/01220/2013/CP1191/CT0002 and by a contract that is supported by FCT/MCTES through national funds (PIDDAC) and by grant PTDC/FIS-AST/29245/2017. J. M. G. is supported by the fellowship CIAAUP-04/2016-BPD in the context of the FCT project UID/FIS/04434/2013 & POCI01-0145-FEDER-007672 and acknowledges the previous support by the fellowships SFRH/BPD/66958/2009 funded by FCT and POPH/FSE (EC) and DL 57/2016/CP1364/CT0003. L. S. M. C. acknowledges support by the project "Enabling Green E-science for the SKA Research Infrastructure (ENGAGE SKA)" (reference POCI-01-0145-FEDER-022217), funded by COMPETE 2020 and FCT. P.L. acknowledges support by DL57/2016/CP1364/CT0010. F. B. acknowledges the support by FCT via the postdoctoral fellowship SFRH/BPD/103958/2014. This study uses data provided by the Calar Alto Legacy Integral Field Area (CALIFA) survey (califa.caha.es), funded by the Spanish Ministry of Science under grant ICTS-2009-10, and the Centro Astronomico Hispano-Aleman. It is based on observations collected at the Centro Astronomico Hispano Aleman (CAHA) at Calar Alto, operated jointly by the Max-Planck-Institut fur Astronomie and the Instituto de Astrofisica de Andalucia (CSIC). This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.