The bimodality in the mass-metallicity relation in SDSS-MaNGA galaxy pairs
arXiv:2112.04113 · doi:10.1051/0004-6361/202142858
Abstract
Aims: Interacting galaxies show a metallicity dilution compared to isolated galaxies of similar masses in the mass-metallicity space at the global scale. We investigate the spatially resolved mass-metallicity relation (MZR) of galaxy pairs in the SDSS-MaNGA survey to confirm that the local relation between the stellar mass surface density and the metallicity is consistent with the MZR at the global scale. Methods: We investigate the relationship between the stellar mass surface density and the metallicity abundance, 12+log (O/H), for star-forming spaxels belonging to 298 galaxy pairs identified using visual and kinematic indicators in the SDSS-MaNGA survey. We also investigate if a)the location of a spaxel relative to the galaxy centre and b)the galaxy pair separation have any effect on the local MZR. Results: We find that the correlation between mass and metallicity holds for interacting galaxies at the local level. However, we find two peaks in spaxel distribution, one peak with enriched metallicity and the other with diluted metallicity. We find that the spaxels belonging to the galaxy central regions (i.e. at lower R/Reff) are concentrated close to the two peaks. We also find that the metallicity-diluted spaxels belong to galaxy pairs with closer projected separations and that spaxels with enriched metallicity belong to galaxy pairs with greater projected separations. Conclusions: We find two discrete peaks in the spatially resolved MZR for star-forming spaxels that belong to galaxy pairs. The peaks are likely related to the galaxy projected separation or the stage of the interaction process of a galaxy pair.
arXiv comment9 pages, 6 figures, accepted by A&A Feb. 17, 2022
References in corpus (47)
- The Origin of the Mass--Metallicity Relation: Insights from 53,000 Star-Forming Galaxies in the SDSS
- The 2.5 m Telescope of the Sloan Digital Sky Survey
- The Host Galaxies and Classification of Active Galactic Nuclei
- Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
- Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
- MILES: A Medium resolution INT Library of Empirical Spectra
- Physical Models of Galaxy Formation in a Cosmological Framework
- Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
- Adaptive spatial binning of integral-field spectroscopic data using Voronoi tessellations
- A fundamental relation between mass, SFR and metallicity in local and high redshift galaxies
- The O3N2 and N2 abundance indicators revisited: improved calibrations based on CALIFA and Te-based literature data
- Galaxy Pairs in the Sloan Digital Sky Survey I: Star Formation, AGN Fraction, and the Luminosity/Mass-Metallicity Relation
- Alternative diagnostic diagrams and the "forgotten" population of weak line galaxies in the SDSS
- The Data Reduction Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey
- The SDSS-IV MaNGA Sample: Design, Optimization, and Usage Considerations
- GASS: The Parkes Galactic All-Sky Survey. I. Survey Description, Goals, and Initial Data Release
- The Data Analysis Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey: Overview
- A catalog of visual-like morphologies in the 5 CANDELS fields using deep-learning
- The Mass-Metallicity relation explored with CALIFA: I. Is there a dependence on the star formation rate?
- Galaxy Pairs in the Sloan Digital Sky Survey - V. Tracing changes in star formation rate and metallicity out to separations of 80 kpc
- New Techniques for Relating Dynamically Close Galaxy Pairs to Merger and Accretion Rates : Application to the SSRS2 Redshift Survey
- CALIFA, the Calar Alto Legacy Integral Field Area survey. III. Second public data release
- SDSS-IV MaNGA: The Impact of Diffuse Ionized Gas on Emission-line Ratios, Interpretation of Diagnostic Diagrams, and Gas Metallicity Measurements
- Galaxy Mergers and the Mass-Metallicity Relation: Evidence for Nuclear Metal Dilution and Flattened Gradients from Numerical Simulations
- The Metallicity Evolution of Interacting Galaxies
- Firefly (Fitting IteRativEly For Likelihood analYsis): a full spectral fitting code
- A Multiwavelength Optical Emission Line Survey of Warm Ionized Gas in the Galaxy
- Galaxy And Mass Assembly (GAMA): Galaxy close-pairs, mergers, and the future fate of stellar mass
- The GALEX Arecibo SDSS Survey V: The Relation between the HI Content of Galaxies and Metal Enrichment at their Outskirts
- A new scaling relation for HII regions in spiral galaxies: unveiling the true nature of the mass-metallicity relation
- Diffuse Ionized Gas in Three Sculptor Group Galaxies
- Do galaxy global relationships emerge from local ones? The SDSS IV MaNGA surface mass density-metallicity relation
- Oxygen abundances in dwarf irregular galaxies and the metallicity - luminosity relationship
- Chemical evolution during gas-rich galaxy interactions
- The mass-metallicity relation of interacting galaxies
- The dilution peak, metallicity evolution, and dating of galaxy interactions and mergers
- An investigation of the luminosity-metallicity relation for a large sample of low-metallicity emission-line galaxies
- Radial Gas Flows in Colliding Galaxies: Connecting Simulations and Observations
- Galaxy And Mass Assembly (GAMA): The mass-metallicity relationship
- SDSS-IV MaNGA: Spatially resolved star-formation histories and the connection to galaxy physical properties
- Galaxy pairs in the Sloan Digital Sky Survey -- XIV. Galaxy mergers do not lie on the Fundamental Metallicity Relation
- Star formation histories in mergers: The spatially resolved properties of the early-stage merger LIRGs IC 1623 and NGC 6090
- Detection of [OI] 6300 and Other Diagnostic Emission Lines in the Diffuse Ionized Gas of M33 with Gemini-North
- Inside-out Galaxy Formation
- Merging galaxies produce outliers from the Fundamental Metallicity Relation
- Galaxy And Mass Assembly (GAMA): the interplay between galaxy mass, SFR and heavy element abundance in paired galaxy sets
- Star Formation in CALIFA survey perturbed galaxies. I. Effects of Tidal Interactions