On the Decline of Star Formation during the Evolution of Galaxies
Cosmological simulations predict that during the evolution of galaxies, the specific star formation rate continuously decreases. In a previous study we showed that generally this is not caused by the galaxies running out of cold gas but rather a decrease in the fraction of gas capable of forming sta...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/ace900 |
| _version_ | 1797691545291325440 |
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| author | Adelheid Teklu Rolf-Peter Kudritzki Klaus Dolag Rhea-Silvia Remus Lucas Kimmig |
| author_facet | Adelheid Teklu Rolf-Peter Kudritzki Klaus Dolag Rhea-Silvia Remus Lucas Kimmig |
| author_sort | Adelheid Teklu |
| collection | DOAJ |
| description | Cosmological simulations predict that during the evolution of galaxies, the specific star formation rate continuously decreases. In a previous study we showed that generally this is not caused by the galaxies running out of cold gas but rather a decrease in the fraction of gas capable of forming stars. To investigate the origin of this behavior, we use disk galaxies selected from the cosmological hydrodynamical simulation Magneticum Pathfinder and follow their evolution in time. We find that the mean density of the cold gas regions decreases with time. This is caused by the fact that during the evolution of the galaxies the star-forming regions move to larger galactic radii, where the gas density is lower. This supports the idea of inside-out growth of disk galaxies. |
| first_indexed | 2024-03-12T02:14:41Z |
| format | Article |
| id | doaj.art-fa7dd063e64046b29c9172a11d2cbbba |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T02:14:41Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-fa7dd063e64046b29c9172a11d2cbbba2023-09-06T09:55:54ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-01954218210.3847/1538-4357/ace900On the Decline of Star Formation during the Evolution of GalaxiesAdelheid Teklu0Rolf-Peter Kudritzki1Klaus Dolag2Rhea-Silvia Remus3Lucas Kimmig4Universitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians-Universität München , Scheinerstr.1, D-81679 München, Germany ; ateklu@usm.lmu.de; Excellence Cluster Origins , Boltzmannstr. 2, D-85748 Garching, GermanyUniversitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians-Universität München , Scheinerstr.1, D-81679 München, Germany ; ateklu@usm.lmu.de; Institute for Astronomy, University of Hawaii at Manoa , 2680 Woodlawn Drive, Honolulu, HI 96822, USAUniversitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians-Universität München , Scheinerstr.1, D-81679 München, Germany ; ateklu@usm.lmu.de; Max-Planck-Institut für Astrophysik , Karl-Schwarzschild-Str. 1, D-85741 Garching, GermanyUniversitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians-Universität München , Scheinerstr.1, D-81679 München, Germany ; ateklu@usm.lmu.deUniversitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians-Universität München , Scheinerstr.1, D-81679 München, Germany ; ateklu@usm.lmu.deCosmological simulations predict that during the evolution of galaxies, the specific star formation rate continuously decreases. In a previous study we showed that generally this is not caused by the galaxies running out of cold gas but rather a decrease in the fraction of gas capable of forming stars. To investigate the origin of this behavior, we use disk galaxies selected from the cosmological hydrodynamical simulation Magneticum Pathfinder and follow their evolution in time. We find that the mean density of the cold gas regions decreases with time. This is caused by the fact that during the evolution of the galaxies the star-forming regions move to larger galactic radii, where the gas density is lower. This supports the idea of inside-out growth of disk galaxies.https://doi.org/10.3847/1538-4357/ace900Disk galaxiesGalaxiesGalaxy evolutionLate-type galaxies |
| spellingShingle | Adelheid Teklu Rolf-Peter Kudritzki Klaus Dolag Rhea-Silvia Remus Lucas Kimmig On the Decline of Star Formation during the Evolution of Galaxies The Astrophysical Journal Disk galaxies Galaxies Galaxy evolution Late-type galaxies |
| title | On the Decline of Star Formation during the Evolution of Galaxies |
| title_full | On the Decline of Star Formation during the Evolution of Galaxies |
| title_fullStr | On the Decline of Star Formation during the Evolution of Galaxies |
| title_full_unstemmed | On the Decline of Star Formation during the Evolution of Galaxies |
| title_short | On the Decline of Star Formation during the Evolution of Galaxies |
| title_sort | on the decline of star formation during the evolution of galaxies |
| topic | Disk galaxies Galaxies Galaxy evolution Late-type galaxies |
| url | https://doi.org/10.3847/1538-4357/ace900 |
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