Effects of Environment on the Size Evolution of Quiescent Galaxies: Comparing Galaxies in Clusters and in the Field at Two Rest-frame Wavelengths
We investigate the impact of environment on quiescent galaxy (QG) size evolution using the CLAUDS+HSC imaging covering 18.6 deg ^2 in five broad filters ( Ugriz ) and the effective radius of a single-Sérsic fit as a proxy for galaxy size. We estimate sizes in two rest-frame wavelengths—3000 Å (UV) a...
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| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/addc6b |
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| author | Angelo George Ivana Damjanov Marcin Sawicki Devin J. Williams Lingjian Chen Guillaume Desprez Marianna Annunziatella Stéphane Arnouts Stephen Gwyn Danilo Marchesini Thibaud Moutard Anna Sajina |
| author_facet | Angelo George Ivana Damjanov Marcin Sawicki Devin J. Williams Lingjian Chen Guillaume Desprez Marianna Annunziatella Stéphane Arnouts Stephen Gwyn Danilo Marchesini Thibaud Moutard Anna Sajina |
| author_sort | Angelo George |
| collection | DOAJ |
| description | We investigate the impact of environment on quiescent galaxy (QG) size evolution using the CLAUDS+HSC imaging covering 18.6 deg ^2 in five broad filters ( Ugriz ) and the effective radius of a single-Sérsic fit as a proxy for galaxy size. We estimate sizes in two rest-frame wavelengths—3000 Å (UV) and 5000 Å (optical)—for ∼86,000 massive ( M _* ≤ 10 ^9.5 M _⊙ ) field QGs and for 1000 of their similarly massive counterparts from 47 clusters at 0.1 < z < 0.85. We fit the size–mass relation (SMR) for field and cluster QGs in five Δ z = 0.15 redshift bins and use the characteristic size of M _* = 5 × 10 ^10 M _⊙ QGs (SMR’s zero-point) to trace the change in galaxy size over cosmic time and in two types of environment. Sizes of QGs are larger in the rest-frame UV than in the rest-frame optical in both clusters and the field, and this difference is more prominent in the field sample. However, QGs in clusters are systematically smaller than the field QGs, and this difference is significantly more pronounced if measured in the rest-frame UV light. Modeling of the redshift evolution in the characteristic QG size as R _e ∝ (1 + z ) ^β shows that the cluster QGs ( β = −1.02 in UV and β = −1.00 in optical) grow in size as fast as the field QGs ( β = −0.95 in UV and −1.22 in optical). This fast growth of cluster QGs is consistent with size increase driven by the accretion of two subpopulations onto clusters: (a) field QGs that are larger than their quiescent counterparts in clusters, and (b) environmentally quenched galaxies (newcomers) that are larger than the rest of the quiescent population. |
| format | Article |
| id | doaj-art-95fc47451f8247cfbb3677e4d5fd868c |
| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj-art-95fc47451f8247cfbb3677e4d5fd868c2025-08-20T03:27:43ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0198714510.3847/1538-4357/addc6bEffects of Environment on the Size Evolution of Quiescent Galaxies: Comparing Galaxies in Clusters and in the Field at Two Rest-frame WavelengthsAngelo George0https://orcid.org/0009-0009-2742-7702Ivana Damjanov1https://orcid.org/0000-0003-4797-5246Marcin Sawicki2https://orcid.org/0000-0002-7712-7857Devin J. Williams3Lingjian Chen4Guillaume Desprez5https://orcid.org/0000-0001-8325-1742Marianna Annunziatella6https://orcid.org/0000-0002-8053-8040Stéphane Arnouts7https://orcid.org/0009-0008-8053-2512Stephen Gwyn8https://orcid.org/0000-0001-8221-8406Danilo Marchesini9https://orcid.org/0000-0001-9002-3502Thibaud Moutard10https://orcid.org/0000-0002-3305-9901Anna Sajina11https://orcid.org/0000-0002-1917-1200Institute for Computational Astrophysics and Department of Astronomy & Physics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, Canada ; angelogeorget@gmail.comInstitute for Computational Astrophysics and Department of Astronomy & Physics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, Canada ; angelogeorget@gmail.comInstitute for Computational Astrophysics and Department of Astronomy & Physics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, Canada ; angelogeorget@gmail.comInstitute for Computational Astrophysics and Department of Astronomy & Physics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, Canada ; angelogeorget@gmail.comInstitute for Computational Astrophysics and Department of Astronomy & Physics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, Canada ; angelogeorget@gmail.comInstitute for Computational Astrophysics and Department of Astronomy & Physics, Saint Mary’s University , 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, Canada ; angelogeorget@gmail.comCentro de Astrobiología (CSIC-INTA) , Ctra de Torrejón a Ajalvir, km 4, E-28850 Torrejón de Ardoz, Madrid, SpainAix-Marseille University , CNRS, CNES, LAM, Marseille, FranceNRC Herzberg Astronomy and Astrophysics , 5071 West Saanich Road, Victoria, British Columbia, V9E 2E7, CanadaDepartment of Physics & Astronomy, Tufts University School of Arts and Sciences , 574 Boston Avenue, Medford, MA 02155, USAEuropean Space Agency (ESA), European Space Astronomy Centre (ESAC) , Camino Bajo del Castillo s/n, 28692 Villanueva de laCañada, Madrid, SpainDepartment of Physics & Astronomy, Tufts University School of Arts and Sciences , 574 Boston Avenue, Medford, MA 02155, USAWe investigate the impact of environment on quiescent galaxy (QG) size evolution using the CLAUDS+HSC imaging covering 18.6 deg ^2 in five broad filters ( Ugriz ) and the effective radius of a single-Sérsic fit as a proxy for galaxy size. We estimate sizes in two rest-frame wavelengths—3000 Å (UV) and 5000 Å (optical)—for ∼86,000 massive ( M _* ≤ 10 ^9.5 M _⊙ ) field QGs and for 1000 of their similarly massive counterparts from 47 clusters at 0.1 < z < 0.85. We fit the size–mass relation (SMR) for field and cluster QGs in five Δ z = 0.15 redshift bins and use the characteristic size of M _* = 5 × 10 ^10 M _⊙ QGs (SMR’s zero-point) to trace the change in galaxy size over cosmic time and in two types of environment. Sizes of QGs are larger in the rest-frame UV than in the rest-frame optical in both clusters and the field, and this difference is more prominent in the field sample. However, QGs in clusters are systematically smaller than the field QGs, and this difference is significantly more pronounced if measured in the rest-frame UV light. Modeling of the redshift evolution in the characteristic QG size as R _e ∝ (1 + z ) ^β shows that the cluster QGs ( β = −1.02 in UV and β = −1.00 in optical) grow in size as fast as the field QGs ( β = −0.95 in UV and −1.22 in optical). This fast growth of cluster QGs is consistent with size increase driven by the accretion of two subpopulations onto clusters: (a) field QGs that are larger than their quiescent counterparts in clusters, and (b) environmentally quenched galaxies (newcomers) that are larger than the rest of the quiescent population.https://doi.org/10.3847/1538-4357/addc6bGalaxy evolutionGalaxy clustersUltraviolet astronomyOptical astronomyGalaxy environments |
| spellingShingle | Angelo George Ivana Damjanov Marcin Sawicki Devin J. Williams Lingjian Chen Guillaume Desprez Marianna Annunziatella Stéphane Arnouts Stephen Gwyn Danilo Marchesini Thibaud Moutard Anna Sajina Effects of Environment on the Size Evolution of Quiescent Galaxies: Comparing Galaxies in Clusters and in the Field at Two Rest-frame Wavelengths The Astrophysical Journal Galaxy evolution Galaxy clusters Ultraviolet astronomy Optical astronomy Galaxy environments |
| title | Effects of Environment on the Size Evolution of Quiescent Galaxies: Comparing Galaxies in Clusters and in the Field at Two Rest-frame Wavelengths |
| title_full | Effects of Environment on the Size Evolution of Quiescent Galaxies: Comparing Galaxies in Clusters and in the Field at Two Rest-frame Wavelengths |
| title_fullStr | Effects of Environment on the Size Evolution of Quiescent Galaxies: Comparing Galaxies in Clusters and in the Field at Two Rest-frame Wavelengths |
| title_full_unstemmed | Effects of Environment on the Size Evolution of Quiescent Galaxies: Comparing Galaxies in Clusters and in the Field at Two Rest-frame Wavelengths |
| title_short | Effects of Environment on the Size Evolution of Quiescent Galaxies: Comparing Galaxies in Clusters and in the Field at Two Rest-frame Wavelengths |
| title_sort | effects of environment on the size evolution of quiescent galaxies comparing galaxies in clusters and in the field at two rest frame wavelengths |
| topic | Galaxy evolution Galaxy clusters Ultraviolet astronomy Optical astronomy Galaxy environments |
| url | https://doi.org/10.3847/1538-4357/addc6b |
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