Galaxies under the cosmic microscope: A gemini multiobject spectrograph study of lensed disk galaxy 289 in A2218
In this paper, we exploit the gravitational potential of the rich cluster A2218 as a magnifying glass. We demonstrate that the magnification due to the cluster allows us to observe distant background galaxies at a comparable level of detail to galaxies at z ∼ 0.1. Using the Gemini Multiobject Spectr...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
Institute of Physics Publishing
2003
|
| _version_ | 1797077740324651008 |
|---|---|
| author | Swinbank, A Smith, J Bower, R Bunker, A Smail, I Ellis, R Smith, G Kneib, J Sullivan, M Allington-, J |
| author_facet | Swinbank, A Smith, J Bower, R Bunker, A Smail, I Ellis, R Smith, G Kneib, J Sullivan, M Allington-, J |
| author_sort | Swinbank, A |
| collection | OXFORD |
| description | In this paper, we exploit the gravitational potential of the rich cluster A2218 as a magnifying glass. We demonstrate that the magnification due to the cluster allows us to observe distant background galaxies at a comparable level of detail to galaxies at z ∼ 0.1. Using the Gemini Multiobject Spectrograph (GMOS) integral field unit (IFU) on Gemini North, we observed the spatially resolved [O II] λ3727 emission line spectrum for a lensed disk galaxy at z = 1.034. Using a detailed model for the cluster mass distribution, we are able to correct for the lensing by the cluster and reconstruct the source morphology. We find that the overall magnification is a factor of 4.92 ± 0.15, and the rest-frame absolute I-band magnitude is MIrest = -22.4 ± 0.2, where the error bars include conservative estimates of the uncertainty in the source-plane reconstruction. The inclination-corrected circular velocity is 206 ± 18 km s-1. The galaxy lies very close to the mean Tully-Fisher relation of present-day spirals. Although our results are based on a single object, they demonstrate that gravitational lensing can be viably used to make detailed studies of the evolution of the structure of distant field galaxies. |
| first_indexed | 2024-03-07T00:22:19Z |
| format | Journal article |
| id | oxford-uuid:7cfa9dca-c075-423a-8f24-2406d0b9151f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:22:19Z |
| publishDate | 2003 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | oxford-uuid:7cfa9dca-c075-423a-8f24-2406d0b9151f2022-03-26T21:00:29ZGalaxies under the cosmic microscope: A gemini multiobject spectrograph study of lensed disk galaxy 289 in A2218Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7cfa9dca-c075-423a-8f24-2406d0b9151fEnglishSymplectic Elements at OxfordInstitute of Physics Publishing2003Swinbank, ASmith, JBower, RBunker, ASmail, IEllis, RSmith, GKneib, JSullivan, MAllington-, JIn this paper, we exploit the gravitational potential of the rich cluster A2218 as a magnifying glass. We demonstrate that the magnification due to the cluster allows us to observe distant background galaxies at a comparable level of detail to galaxies at z ∼ 0.1. Using the Gemini Multiobject Spectrograph (GMOS) integral field unit (IFU) on Gemini North, we observed the spatially resolved [O II] λ3727 emission line spectrum for a lensed disk galaxy at z = 1.034. Using a detailed model for the cluster mass distribution, we are able to correct for the lensing by the cluster and reconstruct the source morphology. We find that the overall magnification is a factor of 4.92 ± 0.15, and the rest-frame absolute I-band magnitude is MIrest = -22.4 ± 0.2, where the error bars include conservative estimates of the uncertainty in the source-plane reconstruction. The inclination-corrected circular velocity is 206 ± 18 km s-1. The galaxy lies very close to the mean Tully-Fisher relation of present-day spirals. Although our results are based on a single object, they demonstrate that gravitational lensing can be viably used to make detailed studies of the evolution of the structure of distant field galaxies. |
| spellingShingle | Swinbank, A Smith, J Bower, R Bunker, A Smail, I Ellis, R Smith, G Kneib, J Sullivan, M Allington-, J Galaxies under the cosmic microscope: A gemini multiobject spectrograph study of lensed disk galaxy 289 in A2218 |
| title | Galaxies under the cosmic microscope: A gemini multiobject spectrograph study of lensed disk galaxy 289 in A2218 |
| title_full | Galaxies under the cosmic microscope: A gemini multiobject spectrograph study of lensed disk galaxy 289 in A2218 |
| title_fullStr | Galaxies under the cosmic microscope: A gemini multiobject spectrograph study of lensed disk galaxy 289 in A2218 |
| title_full_unstemmed | Galaxies under the cosmic microscope: A gemini multiobject spectrograph study of lensed disk galaxy 289 in A2218 |
| title_short | Galaxies under the cosmic microscope: A gemini multiobject spectrograph study of lensed disk galaxy 289 in A2218 |
| title_sort | galaxies under the cosmic microscope a gemini multiobject spectrograph study of lensed disk galaxy 289 in a2218 |
| work_keys_str_mv | AT swinbanka galaxiesunderthecosmicmicroscopeageminimultiobjectspectrographstudyoflenseddiskgalaxy289ina2218 AT smithj galaxiesunderthecosmicmicroscopeageminimultiobjectspectrographstudyoflenseddiskgalaxy289ina2218 AT bowerr galaxiesunderthecosmicmicroscopeageminimultiobjectspectrographstudyoflenseddiskgalaxy289ina2218 AT bunkera galaxiesunderthecosmicmicroscopeageminimultiobjectspectrographstudyoflenseddiskgalaxy289ina2218 AT smaili galaxiesunderthecosmicmicroscopeageminimultiobjectspectrographstudyoflenseddiskgalaxy289ina2218 AT ellisr galaxiesunderthecosmicmicroscopeageminimultiobjectspectrographstudyoflenseddiskgalaxy289ina2218 AT smithg galaxiesunderthecosmicmicroscopeageminimultiobjectspectrographstudyoflenseddiskgalaxy289ina2218 AT kneibj galaxiesunderthecosmicmicroscopeageminimultiobjectspectrographstudyoflenseddiskgalaxy289ina2218 AT sullivanm galaxiesunderthecosmicmicroscopeageminimultiobjectspectrographstudyoflenseddiskgalaxy289ina2218 AT allingtonj galaxiesunderthecosmicmicroscopeageminimultiobjectspectrographstudyoflenseddiskgalaxy289ina2218 |