Bar rejuvenation in S0 galaxies?
arXiv:2005.07387 · doi:10.1093/mnras/staa1387
Abstract
Based on the colour measurements from a multi-band, multi-component 2D decomposition's of S0 and spiral galaxies using SDSS images, we found that bars are bluer in S0 galaxies compared to the spiral galaxies. Most of the S0s in our sample have stellar masses galaxies. The environment might have played an important role as most of the S0s with bluer bars are in the intermediate-density environment. The possibility of minor mergers and tidal interactions which occurs frequently in the intermediate-density environment might have caused either a bar to form and/or induce star formation in the barred region of S0 galaxies. The underlying discs show the usual behaviour being redder in S0s compared to spiral galaxies while the bulges are red and old for both S0 and spiral galaxies. The finding of bluer bars in S0 galaxies is a puzzling issue and poses an interesting question at numerical and theoretical studies most of which shows that the bars are long-lived structures with old stellar populations.
10 pages, 7 figures, accepted for publication in MNRAS
References in corpus (26)
- A simple model to interpret the ultraviolet, optical and infrared emission from galaxies
- Strangulation as the primary mechanism for shutting down star formation in galaxies
- Structural Properties of Pseudo-Bulges, Classical Bulges and Elliptical Galaxies: an SDSS Perspective
- Dynamics of Barred Galaxies
- The Evolution of Galaxy Structure over Cosmic Time
- A Near-Infrared Study of 2MASS Bars in Local Galaxies: An Anchor for High Redshift Studies
- The Structure of Classical Bulges And Pseudobulges: The Link Between Pseudobulges And Sersic Index
- The population of barred galaxies in the local universe I. Detection and characterisation of bars
- Bars in Disk-Dominated and Bulge-Dominated Galaxies at z~0: New Insights from ~3600 SDSS Galaxies
- The Fundamental Properties of Galaxies and a New Galaxy Classification System
- Color Profiles of Spiral Galaxies: Clues on Outer-Disk Formation Scenarios
- Green Valley Galaxies
- Stellar Population and Kinematic Profiles in Spiral Bulges & Disks: Population Synthesis of Integrated Spectra
- Galaxy Zoo: Secular evolution of barred galaxies from structural decomposition of multi-band images
- Multi-molecule ALMA observations towards the Seyfert 1 galaxy NGC 1097
- On the interdependence of galaxy morphology, star formation, and environment in massive galaxies in the nearby Universe
- A giant bar induced by a merger event at z=0.4?
- The distribution of stellar population age in galactic bars
- SDSS-IV MaNGA: Stellar Population Gradients Within Barred Galaxies
- Are (pseudo)bulges in isolated galaxies actually primordial relics?
- Evolution induced by dry minor mergers onto fast-rotator S0 galaxies
- From kpcs to the central parsec of NGC 1097: feeding star formation and a black hole at the same time
- Long-Lived Spiral Structure for Galaxies with Intermediate Size Bulges
- A Spitzer Study of Pseudobulges in S0 Galaxies : Secular Evolution of Disks
- Which bulges are favoured by barred S0 galaxies?
- Disc heating: possible link between weak bars and superthin galaxies