Zaragoza-Cardiel, Javier; Fritz, Jacopo; Aretxaga, Itziar; Mayya, Divakara; Rosa-González, Daniel; Beckman, John E.; Bruzual, Gustavo; Charlot, Stephane; Lomelí-Núñez, Luis
Bibliographical reference
Monthly Notices of the Royal Astronomical Society: Letters, Volume 487, Issue 1, p.L61-L66
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6
2019
Citations
10
Refereed citations
9
Description
Stellar feedback has a notable influence on the formation and evolution
of galaxies. However, direct observational evidence is scarce. We have
performed stellar population analysis using MUSE optical spectra of the
spiral galaxy NGC 628 and find that current maximum star formation in
spatially resolved regions is regulated according to the level of star
formation in the recent past. We propose a model based on the
self-regulator or `bathtub' models, but for spatially resolved regions
of the galaxy. We name it the `resolved self-regulator model' and show
that the predictions of this model are in agreement with the presented
observations. We observe star formation self-regulation and estimate the
mass-loading factor, η = 2.5 ± 0.5, consistent with values
predicted by galaxy formation models. The method described here will
help provide better constraints on those models.
Related projects
Kinematic, Structural and Composition Studies of the Interstellar and Intergalactic Media
The basic objective of the broject is to investigate the evolution of galaxies by deepening our understanding of the interaction between the insterstellar medium and the stars.The main technique which we use is the two-dimensional kinematic study of whole galaxies observed using our instrument:GHaFaS, a Fabry-Perot interferometer on the William
Prof.
John E. Beckman