The Central Region of M83
We combine VLT/ISAAC NIR spectroscopy with archival HST/WFPC2 and HST/NICMOS imaging to study the central 20"x20" of M83. Our NIR indices for clusters in the circumnuclear star-burst region are inconsistent with simple instantaneous burst models. However, models of a single burst dispersed...
| Main Authors: | , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
2008
|
| _version_ | 1797092699999830016 |
|---|---|
| author | Houghton, R Thatte, N |
| author_facet | Houghton, R Thatte, N |
| author_sort | Houghton, R |
| collection | OXFORD |
| description | We combine VLT/ISAAC NIR spectroscopy with archival HST/WFPC2 and HST/NICMOS imaging to study the central 20"x20" of M83. Our NIR indices for clusters in the circumnuclear star-burst region are inconsistent with simple instantaneous burst models. However, models of a single burst dispersed over a duration of 6 Myrs fit the data well and provide the clearest evidence yet of an age gradient along the star forming arc, with the youngest clusters nearest the north-east dust lane. The long slit kinematics show no evidence to support previous claims of a second hidden mass concentration, although we do observe changes in molecular gas velocity consistent with the presence of a shock at the edge of the dust lane. |
| first_indexed | 2024-03-07T03:49:44Z |
| format | Journal article |
| id | oxford-uuid:c0ce63bc-d4c4-4a76-be61-ee2fc60b52fc |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:49:44Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:c0ce63bc-d4c4-4a76-be61-ee2fc60b52fc2022-03-27T05:57:03ZThe Central Region of M83Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c0ce63bc-d4c4-4a76-be61-ee2fc60b52fcEnglishSymplectic Elements at Oxford2008Houghton, RThatte, NWe combine VLT/ISAAC NIR spectroscopy with archival HST/WFPC2 and HST/NICMOS imaging to study the central 20"x20" of M83. Our NIR indices for clusters in the circumnuclear star-burst region are inconsistent with simple instantaneous burst models. However, models of a single burst dispersed over a duration of 6 Myrs fit the data well and provide the clearest evidence yet of an age gradient along the star forming arc, with the youngest clusters nearest the north-east dust lane. The long slit kinematics show no evidence to support previous claims of a second hidden mass concentration, although we do observe changes in molecular gas velocity consistent with the presence of a shock at the edge of the dust lane. |
| spellingShingle | Houghton, R Thatte, N The Central Region of M83 |
| title | The Central Region of M83 |
| title_full | The Central Region of M83 |
| title_fullStr | The Central Region of M83 |
| title_full_unstemmed | The Central Region of M83 |
| title_short | The Central Region of M83 |
| title_sort | central region of m83 |
| work_keys_str_mv | AT houghtonr thecentralregionofm83 AT thatten thecentralregionofm83 AT houghtonr centralregionofm83 AT thatten centralregionofm83 |