The dark side of galaxy stellar populations II: The dependence of star formation histories on halo mass and on the scatter of the main sequence
arXiv:2211.11779 · doi:10.1093/mnras/stac3422
Abstract
Nearby galaxies are the end result of their cosmological evolution, which is predicted to be influenced by the growth of their host dark matter halos. This co-evolution potentially leaves signatures in present-day observed galaxy properties, which might be essential to further understand how the growth and properties of galaxies are connected to those of their host halos. In this work, we study the evolutionary histories of nearby galaxies both in terms of their host halos and the scatter of the star-forming main sequence by investigating their time-resolved stellar populations using absorption optical spectra drawn from the Sloan Digital Sky Survey. We find that galaxy star formation histories depend on the masses of their host halos, and hence they shape the evolution of the star-forming main sequence over cosmic time. Additionally, we also find that the scatter around the z=0 star-forming main sequence is not (entirely) stochastic, as galaxies with currently different star formation rates have experienced, on average, different star formation histories. Our findings suggest that dark matter halos might play a key role in modulating the evolution of star formation in galaxies, and thus of the main sequence, and further demonstrate that galaxies at different evolutionary stages contribute to the observed scatter of this relation.
Accepted for publication in MNRAS, 13 pages, 9 Figures
References in corpus (30)
- Array Programming with NumPy
- The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
- Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
- Star Formation in AEGIS Field Galaxies since z=1.1 : The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-Forming Galaxies
- UV Star Formation Rates in the Local Universe
- A Highly Consistent Framework for the Evolution of the Star-Forming "Main Sequence" from z~0-6
- Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
- Galaxy Groups in the SDSS DR4: I. The Catalogue and Basic Properties
- Evolutionary Stellar Population Synthesis with MILES. Part I: The Base Models and a New Line Index System
- The Atlas3D Project - XXX. Star formation histories and stellar population scaling relations of early-type galaxies
- An Objective Definition for the Main Sequence of Star-Forming Galaxies
- Ages and metallicities of early-type galaxies in the SDSS: new insight into the physical origin of the colour-magnitude and the Mg2-sigmaV relations
- Evolutionary stellar population synthesis with MILES - II. Scaled-solar and α-enhanced models
- The star formation histories of galaxies in the Sloan Digital Sky Survey
- Recovering galaxy star formation and metallicity histories from spectra using VESPA
- Firefly (Fitting IteRativEly For Likelihood analYsis): a full spectral fitting code
- Fast, Slow, Early, Late: Quenching Massive Galaxies at z~0.8
- The origin of scatter in the stellar mass - halo mass relation of central galaxies in the EAGLE simulation
- SDSS IV MaNGA: The global and local stellar mass assemby histories of galaxies
- Timing the formation and assembly of early-type galaxies via spatially resolved stellar populations analysis
- Recovering the star formation histories of recently-quenched galaxies: the impact of model and prior choices
- Black-hole-regulated star formation in massive galaxies
- The dependence of the galaxy stellar-to-halo mass relation on galaxy morphology
- Matching the Evolution of the Stellar Mass Function Using Log-normal Star Formation Histories
- Quenching and morphological evolution due to circumgalactic gas expulsion in a simulated galaxy with a controlled assembly history
- The dark side of galaxy stellar populations I: The stellar-to-halo mass relation and the velocity dispersion - halo mass relation
- iMaNGA: mock MaNGA galaxies based on IllustrisTNG and MaStar SSPs. I. Construction and analysis of the mock data cubes
- Star formation quenching imprinted on the internal structure of naked red nuggets
- Rejuvenation triggers nuclear activity in nearby galaxies
- Recovering age-metallicity distributions from integrated spectra: validation with MUSE data of a nearby nuclear star cluster
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- Ergodicity of FIRE: star formation variations within and between simulated galaxies
- Spatially resolved stellar-to-total dynamical mass relation: Radial variations, gradients and profiles of galaxy stellar populations
- Evaluating quenching in cosmological simulations of galaxy formation with spectral covariance in the optical window