Stellar populations in KDCs of Sa galaxies
We present integral-field observations of kinematically decoupled components (KDCs) in a sample of 24 Sa galaxies part of the SAURON Survey. We show how the V/ maps can be used to highlight the presence of the KDC and investigate their stellar populations (i.e. age) to understand their origin (i.e....
| Hoofdauteurs: | , , , , , , , , , , , |
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| Formaat: | Journal article |
| Taal: | English |
| Gepubliceerd in: |
2006
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| _version_ | 1826291637105459200 |
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| author | Falcn-Barroso, J Bacon, R Cappellari, M Davies, R De Zeeuw, P Emsellem, E Krajnović, D Kuntschner, H McDermid, R Peletier, R Sarzi, M Van De Ven, G |
| author_facet | Falcn-Barroso, J Bacon, R Cappellari, M Davies, R De Zeeuw, P Emsellem, E Krajnović, D Kuntschner, H McDermid, R Peletier, R Sarzi, M Van De Ven, G |
| author_sort | Falcn-Barroso, J |
| collection | OXFORD |
| description | We present integral-field observations of kinematically decoupled components (KDCs) in a sample of 24 Sa galaxies part of the SAURON Survey. We show how the V/ maps can be used to highlight the presence of the KDC and investigate their stellar populations (i.e. age) to understand their origin (i.e. secular vs hierarchical scenarios). We find that KDCs can be long-lived and are typically well aligned with the galaxies kinematical major axis, supporting mounting evidence that secular evolution becomes important at intermediate redshifts. Dynamically colder ones seem to host younger stellar populations. We also relate these features to the ones found in our sample of 48 elliptical and lenticular galaxies. We find that there is no age vs size relation for these decoupled components in Sa galaxies, suggesting that the dominant factor determining their size is the amount of star formation they have been subject to during their life time. © 2007 International Astronomical Union. |
| first_indexed | 2024-03-07T03:02:23Z |
| format | Journal article |
| id | oxford-uuid:b164466a-3f09-4ef3-a1c3-f5f75e4ae318 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:02:23Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:b164466a-3f09-4ef3-a1c3-f5f75e4ae3182022-03-27T04:03:44ZStellar populations in KDCs of Sa galaxiesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b164466a-3f09-4ef3-a1c3-f5f75e4ae318EnglishSymplectic Elements at Oxford2006Falcn-Barroso, JBacon, RCappellari, MDavies, RDe Zeeuw, PEmsellem, EKrajnović, DKuntschner, HMcDermid, RPeletier, RSarzi, MVan De Ven, GWe present integral-field observations of kinematically decoupled components (KDCs) in a sample of 24 Sa galaxies part of the SAURON Survey. We show how the V/ maps can be used to highlight the presence of the KDC and investigate their stellar populations (i.e. age) to understand their origin (i.e. secular vs hierarchical scenarios). We find that KDCs can be long-lived and are typically well aligned with the galaxies kinematical major axis, supporting mounting evidence that secular evolution becomes important at intermediate redshifts. Dynamically colder ones seem to host younger stellar populations. We also relate these features to the ones found in our sample of 48 elliptical and lenticular galaxies. We find that there is no age vs size relation for these decoupled components in Sa galaxies, suggesting that the dominant factor determining their size is the amount of star formation they have been subject to during their life time. © 2007 International Astronomical Union. |
| spellingShingle | Falcn-Barroso, J Bacon, R Cappellari, M Davies, R De Zeeuw, P Emsellem, E Krajnović, D Kuntschner, H McDermid, R Peletier, R Sarzi, M Van De Ven, G Stellar populations in KDCs of Sa galaxies |
| title | Stellar populations in KDCs of Sa galaxies |
| title_full | Stellar populations in KDCs of Sa galaxies |
| title_fullStr | Stellar populations in KDCs of Sa galaxies |
| title_full_unstemmed | Stellar populations in KDCs of Sa galaxies |
| title_short | Stellar populations in KDCs of Sa galaxies |
| title_sort | stellar populations in kdcs of sa galaxies |
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