The spatially resolved star formation history of CALIFA galaxies: Cosmic time scales
R. Garc\'ia-Benito, R. M. Gonz\'alez Delgado, E. P\'erez, R. Cid, Fernandes, C. Cortijo-Ferrero, R. L\'opez Fern\'andez, A. L. de Amorim, E. A., D. Lacerda, N. Vale Asari, S. F. S\'anchez

TL;DR
This study uses CALIFA data to analyze the spatially resolved star formation histories of nearby galaxies, revealing inside-out mass assembly and dependencies on galaxy mass, surface density, and morphology.
Contribution
It provides the first detailed spatially resolved star formation histories across a large galaxy sample, highlighting inside-out growth and the influence of galaxy properties.
Findings
Inner regions assemble earlier than outer regions.
Diversity in formation epochs is higher in lower-mass galaxies.
Negative age gradients are common, flattening with higher surface density.
Abstract
This paper presents the mass assembly time scales of nearby galaxies observed by CALIFA at the 3.5m telescope in Calar Alto. We apply the fossil record method of the stellar populations to the complete sample of the 3rd CALIFA data release, with a total of 661 galaxies, covering stellar masses from 10 to 10 M and a wide range of Hubble types. We apply spectral synthesis techniques to the datacubes and process the results to produce the mass growth time scales and mass weighted ages, from which we obtain temporal and spatially resolved information in seven bins of galaxy morphology and six bins of stellar mass (M) and stellar mass surface density (). We use three different tracers of the spatially resolved star formation history (mass assembly curves, ratio of half mass to half light radii, and mass-weighted age gradients) to test if…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
