WFILAS: Wide Field Imager Lyman Alpha Search
The Wide Field Imager Lyman-Alpha Search (WFILAS) is a search for Lya emitting galaxies at z~5.7. Deep images from the Wide Field Imager (WFI) on the ESO/MPI 2.2m telescope have been used to detect 7 bright Lya emitting candidates in three fields covering 0.74 sq. degree on the sky. For this we used...
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Zusammenfassung: | The Wide Field Imager Lyman-Alpha Search (WFILAS) is a search for Lya
emitting galaxies at z~5.7. Deep images from the Wide Field Imager (WFI) on the
ESO/MPI 2.2m telescope have been used to detect 7 bright Lya emitting
candidates in three fields covering 0.74 sq. degree on the sky. For this we
used three narrowband (FWHM ~70A), one encompassing intermediate band (FWHM
\~220A) and broadband B and R filters. One has thus far been spectroscopically
confirmed as a Lya emitting galaxy at z=5.721 using FORS2 at the VLT. This
galaxy shows a bright, well resolved asymmetric line profile, which is
characteristic of Lya emitting galaxies.
In one of our three fields, the Chandra Deep Field South (CDFS), we find an
overdensity of Lya emitters in agreement with other surveys that have targeted
this region. A statistically complete sample of our candidates probes the
bright-end of the luminosity function, confirming earlier results from other
smaller, deeper surveys. |
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DOI: | 10.48550/arxiv.astro-ph/0509368 |