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The effects of the environment on the properties of old and young galaxies in the local universe
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Sepideh Eskandarlou   , Saeed Tavasoli |
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Abstract: (685 Views) |
| In this project, we investigate the properties of old and young galaxies in different environments, based on SDSS sample in the local universe. In order to that, we extracted the cluster and void catalog that are brighter than 𝑀𝑟~−17 and located in 𝑧<0.04. We show that massive old galaxies in void and cluster environments have higher velocity dispersion. On the other hand, this trend cannot be seen for young galaxies, especially for lower mass. Also, old galaxies are smaller than young galaxies at the same stellar-mass for void and cluster environments. In both environments, the sersic-index is constant for the low mass regime of young galaxies but increases for massive old galaxies. Although there is tight relation between the color of young galaxies and stellar-mass in both environments, it remains constant for all range mass of old galaxies. This study shows that the properties of old and young galaxies in local universe are independent of environments. |
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| Keywords: old and young Galaxy, environment, Stellar-Mass, Velocity dispersion, size, sersic index |
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Full-Text [PDF 873 kb]
(233 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2020/12/29 | Accepted: 2021/09/13 | Published: 2021/09/14
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