Matches in SemOpenAlex for { <https://semopenalex.org/work/W4306246991> ?p ?o ?g. }
- W4306246991 endingPage "3777" @default.
- W4306246991 startingPage "3763" @default.
- W4306246991 abstract "ABSTRACT Star formation histories (SFHs) are integral to our understanding of galaxy evolution. We can study recent SFHs by comparing the star formation rate (SFR) calculated using different tracers, as each probes a different time-scale. We aim to calibrate a proxy for the present-day rate of change in SFR, dSFR/dt, which does not require full spectral energy distribution (SED) modelling and depends on as few observables as possible, to guarantee its broad applicability. To achieve this, we create a set of models in cigale and define an SFR change diagnostic as the ratio of the SFR averaged over the past 5 and 200 Myr, $langle SFR_{rm {5}} rangle big / langle SFR_{rm {200}} rangle$, probed by the H α–FUV colour. We apply $langle SFR_{rm {5}} rangle big / langle SFR_{rm {200}} rangle$ to the nearby spiral NGC 628 and find that its star formation activity has overall been declining in the recent past, with the spiral arms, however, maintaining a higher level of activity. The impact of the spiral arm structure is observed to be stronger on $langle SFR_{rm {5}} rangle big / langle SFR_{rm {200}} rangle$ than on the star formation efficiency. In addition, increasing disc pressure tends to increase recent star formation, and consequently $langle SFR_{rm {5}} rangle big / langle SFR_{rm {200}} rangle$. We conclude that $langle SFR_{rm {5}} rangle big / langle SFR_{rm {200}} rangle$ is sensitive to the molecular gas content, spiral arm structure, and disc pressure. The $langle SFR_{rm {5}} rangle big / langle SFR_{rm {200}} rangle$ indicator is general and can be used to reconstruct the recent SFH of any star-forming galaxy for which H α, FUV, and either mid- or far-IR photometry is available, without the need of detailed modelling." @default.
- W4306246991 created "2022-10-15" @default.
- W4306246991 creator A5011335986 @default.
- W4306246991 creator A5036990352 @default.
- W4306246991 creator A5042056560 @default.
- W4306246991 creator A5089082741 @default.
- W4306246991 date "2022-10-14" @default.
- W4306246991 modified "2023-10-15" @default.
- W4306246991 title "The recent star formation history of NGC 628 on resolved scales" @default.
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