The origin of the nuclear star-forming ring in NGC 3182
arXiv:2206.12263 · doi:10.3847/1538-3881/ac7b83
Abstract
We investigate the stellar and ionized gas kinematics, and stellar populations of NGC3182 galaxy using integral field spectrograph data from the Calar Alto Legacy Integral Field Area survey. We try to clarify the nature of the ring structure in NGC 3182. We find a negative stellar age gradient out to the ring, while [α/Fe] considerably enhanced in the ring. The stellar metallicity shows a smooth negative gradient. From the line ratio diagnostic diagrams, we confirm that NGC 3182 is a Seyfert galaxy from emission line flux ratio, while the gas in the inner ring is ionized mostly by young stars. However, any obvious feature of outflows is not found in its gas kinematics. In the ring, star formation seems to have recently occurred and the gas metallicity is slightly enhanced compared to the center. From our results, we conclude that star formation has occurred in the circumnuclear region within a short period and this may result from a positive feedback by AGN radiation pressure.
10 pages, 6 figures, Accepted for publication in AJ
References in corpus (10)
- Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
- Evolutionary Stellar Population Synthesis with MILES. Part I: The Base Models and a New Line Index System
- Population Synthesis in the Blue IV: Accurate Model Predictions for Lick Indices and UBV Colors in Single Stellar Populations
- A Classical Morphological Analysis of Galaxies in the Spitzer Survey of Stellar Structure in Galaxies (S4G)
- CALIFA: a diameter-selected sample for an integral field spectroscopy galaxy survey
- CALIFA, the Calar Alto Legacy Integral Field Area survey. II. First public data release
- CALIFA, the Calar Alto Legacy Integral Field Area survey. III. Second public data release
- The SAMI Galaxy Survey: Revisiting Galaxy Classification Through High-Order Stellar Kinematics
- Measuring Ages and Elemental Abundances from Unresolved Stellar Populations: Fe, Mg, C, N, and Ca
- The Effect of the AGN Feedback on the Interstellar Medium of Early-Type Galaxies: 2D Hydrodynamical Simulations of the Low-Rotation Case