1. The discovery of a massive supercluster at.
- Author
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Swinbank, A. M., Edge, A. C., Smail, Ian, Stott, J. P., Bremer, M., Sato, Y., van Breukelen, C., Jarvis, M., Waddington, I., Clewley, L., Bergeron, J., Cotter, G., Dye, S., Geach, J. E., Gonzalez-Solares, E., Hirst, P., Ivison, R. J., Rawlings, S., Simpson, C., and Smith, G. P.
- Subjects
SUPERCLUSTERS ,STAR clusters ,REDSHIFT ,SPECTRUM analysis ,SPECTROGRAPHS ,SURVEYS - Abstract
We analyse the first publicly released deep field of the UK Infrared Deep Sky Survey (UKIDSS) Deep eXtragalactic Survey to identify candidate galaxy overdensities at across ∼1 deg
2 in the ELAIS-N1 field. Using and colours, we identify and spectroscopically follow up five candidate structures with Gemini/Gemini Multi-Object Spectrograph and confirm that they are all true overdensities with between five and 19 members each. Surprisingly, all five structures lie in a narrow redshift range at , although they are spread across 30 Mpc on the sky. We also find a more distant overdensity at in one of the spectroscopic survey regions. These five overdense regions lying in a narrow redshift range indicate the presence of a supercluster in this field and by comparing with mock cluster catalogues from N-body simulations we discuss the likely properties of this structure. Overall, we show that the properties of this supercluster are similar to the well-studied Shapley and Hercules superclusters at lower redshift. [ABSTRACT FROM AUTHOR]- Published
- 2007
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