The diverse quenching pathways of post-starburst galaxies in SDSS-IV MaNGA
arXiv:2509.05172 · doi:10.1093/mnras/staf1493
Abstract
The quenching of star formation in galaxies is an important aspect of galaxy evolution, but the physical mechanisms that drive it are still not understood. Measuring the spatial distribution of quenching can help determine these mechanisms. We present the star-formation histories (SFHs) and stellar metallicity evolution of rapidly quenched regions in 86 local post-starburst (PSB) galaxies from the MaNGA integral field survey, obtained through Bayesian full spectral fitting of their rest-frame optical spectra. We found that regardless of spatial location, the PSB regions have similar past SFHs and chemical evolution, once radial metallicity gradients are accounted for. This suggests that all PSB regions are regulated by a common set of local scale processes in the interstellar medium, regardless of the broader triggering mechanism. We show that the centres of galaxies with outer PSB regions are also quenching. The central specific star-formation rate (sSFR) has declined by dex on average during the last 2 Gyr, a significantly steeper decline than main sequence galaxies over the same period (dex). This central quenching can be either synchronous, outside-in or inside-out, and slower or as fast as the outer regions, highlighting the diversity of quenching pathways for local galaxies. Our results imply a primary quenching mechanism that is both catastrophic and global in rapidly halting star formation in local galaxies. We suggest the predominant cause is galaxy mergers or interactions, with large scale feedback from a starburst or a central supermassive black hole playing a lesser role.
Accepted for publication in MNRAS. Main text: 17 pages, 8 figures
References in corpus (47)
- Array Programming with NumPy
- Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
- A simple model to interpret the ultraviolet, optical and infrared emission from galaxies
- Binary Population and Spectral Synthesis Version 2.1: construction, observational verification and new results
- Strangulation as the primary mechanism for shutting down star formation in galaxies
- Star formation efficiency in galaxy interactions and mergers: a statistical study
- The Data Reduction Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey
- The Main Sequence of star-forming galaxies across cosmic times
- A massive quiescent galaxy at redshift 4.658
- Post-starburst galaxies: more than just an interesting curiosity
- The Cosmic Evolution of Metallicity from the SDSS Fossil Record
- A surprising abundance of massive quiescent galaxies at 3 < z < 5 in the first data from JWST CEERS
- The evolution of post-starburst galaxies from z=2 to z= 0.5
- Catalogues of isolated galaxies, isolated pairs, and isolated triplets in the local Universe
- How to quench a galaxy
- The evolution of the cold interstellar medium in galaxies following a starburst
- SDSS-IV MaNGA: Modeling the Spectral Line Spread Function to Sub-Percent Accuracy
- A population of faint, old, and massive quiescent galaxies at 3 < z < 4 revealed by JWST NIRSpec Spectroscopy
- Galaxy And Mass Assembly (GAMA): The mechanisms for quiescent galaxy formation at
- GASP XXIII: A jellyfish galaxy as an astrophysical laboratory of the baryonic cycle
- Dissecting Galaxies: Spatial and Spectral Separation of Emission Excited by Star Formation and AGN Activity
- Separate ways: The Mass-Metallicity Relation does not strongly correlate with Star Formation Rate in SDSS-IV MaNGA galaxies
- Evolution Through the Post-Starburst Phase: Using Post-Starburst Galaxies as Laboratories for Understanding the Processes that Drive Galaxy Evolution
- Galaxy mergers can rapidly shut down star formation
- A Catalog of 406 AGNs in MaNGA: A Connection between Radio-mode AGN and Star Formation Quenching
- SDSS-IV MaNGA: Radial Gradients in Stellar Population Properties of Early-Type and Late-Type Galaxies
- The metallicity's fundamental dependence on both local and global galactic quantities
- GASP XXX. The spatially resolved SFR-Mass relation in stripping galaxies in the local universe
- The merger fraction of post-starburst galaxies in UNIONS
- The diverse evolutionary pathways of post-starburst galaxies
- Rapid Quenching of Galaxies at Cosmic Noon
- LoTSS Jellyfish Galaxies IV: Enhanced Star Formation on the Leading Half of Cluster Galaxies and Gas Compression in IC3949
- The Evolution of the Interstellar Medium in Post-Starburst Galaxies
- How Ram Pressure Drives Radial Gas Motions in the Surviving Disk
- SDSS-IV MaNGA: drivers of stellar metallicity in nearby galaxies
- Revealing impacts of stellar mass and environment on galaxy quenching
- Galaxy evolution in the post-merger regime. II -- Post-merger quenching peaks within 500 Myr of coalescence
- Post-Starburst Properties of Post-Merger Galaxies
- The role of mass and environment in the build up of the quenched galaxy population since cosmic noon
- Starburst and post-starburst high-redshift protogalaxies: The feedback impact of high energy cosmic rays
- Stellar mass as the "glocal" driver of galaxies' stellar population properties
- Classifying the full SDSS-IV MaNGA Survey using optical diagnostic diagrams: presentation of AGN catalogs in flexible apertures
- Chemical evolution of local post-starburst galaxies: Implications for the mass-metallicity relation
- From starburst to quenching: merger-driven evolution of the star formation regimes in a shell galaxy
- Resolved Molecular Gas Observations of MaNGA Post-starbursts Reveal a Tumultuous Past
- Post-starburst galaxies in SDSS-IV MaNGA: Two broad categories of evolutionary pathways
- Introducing a Real-time Interactive GUI Tool for Visualization of Galaxy Spectra