A Comparison of Star-Formation Histories Derived from UniverseMachine and LEGA-C at $0.6 < z < 1$
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866911754100932608 |
|---|---|
| author | Steel, Cecilia Pearl, Alan Kaushal, Yasha Bezanson, Rachel |
| author_facet | Steel, Cecilia Pearl, Alan Kaushal, Yasha Bezanson, Rachel |
| contents | In this work, we compare star formation histories of massive (10.5 $< \log(\mathrm{M_*/M_{\odot}}) <$ 12) galaxies in the UniverseMachine model to those measured from the Large Early Galaxy Astrophysics Census (LEGA-C) at $0.6<z<1$. Following the LEGA-C study, we investigate how 50% ($t_{50}$) and 90% ($t_{90}$) formation timescales depend on total stellar mass. We find good agreement between the observed and model timescales for the star-forming population $Δ\,t_{SF}\lesssim1\,\mathrm{Gyr}$ across the full mass range. In contrast, the observed age-mass correlation is weaker for the quiescent population compared to UniverseMachine models ($Δt_{Q}\lesssim2\,\mathrm{Gyr}$), especially at the high-mass end. This indicates continued star formation or additional processes in the most massive quiescent galaxies, a behavior not accounted for in the UniverseMachine model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_05313 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Comparison of Star-Formation Histories Derived from UniverseMachine and LEGA-C at $0.6 < z < 1$ Steel, Cecilia Pearl, Alan Kaushal, Yasha Bezanson, Rachel Astrophysics of Galaxies In this work, we compare star formation histories of massive (10.5 $< \log(\mathrm{M_*/M_{\odot}}) <$ 12) galaxies in the UniverseMachine model to those measured from the Large Early Galaxy Astrophysics Census (LEGA-C) at $0.6<z<1$. Following the LEGA-C study, we investigate how 50% ($t_{50}$) and 90% ($t_{90}$) formation timescales depend on total stellar mass. We find good agreement between the observed and model timescales for the star-forming population $Δ\,t_{SF}\lesssim1\,\mathrm{Gyr}$ across the full mass range. In contrast, the observed age-mass correlation is weaker for the quiescent population compared to UniverseMachine models ($Δt_{Q}\lesssim2\,\mathrm{Gyr}$), especially at the high-mass end. This indicates continued star formation or additional processes in the most massive quiescent galaxies, a behavior not accounted for in the UniverseMachine model. |
| title | A Comparison of Star-Formation Histories Derived from UniverseMachine and LEGA-C at $0.6 < z < 1$ |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2401.05313 |