Spatial correlation between submillimetre and Lyman-alpha galaxies in the SSA 22 protocluster

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dc.creatorTamura, Yoichi
dc.creatorKohno, Kotaro
dc.creatorNakanishi, Kouichiro
dc.creatorHatsukade, Bunyo
dc.creatorIono, Daisuke
dc.creatorWilson, Grant W.
dc.creatorYun, Min S.
dc.creatorTakata, Tadafumi
dc.creatorMatsuda, Yuichi
dc.creatorTosaki, Tomoka
dc.creatorEzawa, Hajime
dc.creatorPerera, Thushara A.
dc.creatorScott, Kimberly S.
dc.creatorAustermann, Jason E.
dc.creatorHughes, David H.
dc.creatorAretxaga, Itziar
dc.creatorChung, Aeree
dc.creatorOshima, Tai
dc.creatorYamaguchi, Nobuyuki
dc.creatorTanaka, Kunihiko
dc.creatorKawabe, Ryohei
dc.date2009-05-06
dc.date.accessioned2026-07-07T13:12:20Z
dc.date.available2026-07-07T13:12:20Z
dc.descriptionLyman-alpha emitters are thought to be young, low-mass galaxies with ages of ~10^8 yr. An overdensity of them in one region of the sky (the SSA 22 field) traces out a filamentary structure in the early Universe at a redshift of z = 3.1 (equivalent to 15 per cent of the age of the Universe) and is believed to mark a forming protocluster. Galaxies that are bright at (sub)millimetre wavelengths are undergoing violent episodes of star formation, and there is evidence that they are preferentially associated with high-redshift radio galaxies, so the question of whether they are also associated with the most significant large-scale structure growing at high redshift (as outlined by Lyman-alpha emitters) naturally arises. Here we report an imaging survey of 1,100-um emission in the SSA 22 region. We find an enhancement of submillimetre galaxies near the core of the protocluster, and a large-scale correlation between the submillimetre galaxies and the low-mass Lyman-alpha emitters, suggesting synchronous formation of the two very different types of star-forming galaxy within the same structure at high redshift. These results are in general agreement with our understanding of the formation of cosmic structure.
dc.descriptionPublished in Nature (7th May 2009 issue). The astro-ph paper includes the main text (10 pages, 2 figures, 1 table) and supplementary material (6 pages, 4 figures, 1 table)
dc.identifierhttps://arxiv.org/abs/0905.0890
dc.identifierhttp://arxiv.org/abs/0905.0890
dc.identifierNature 459, 61-63 (2009)
dc.identifierdoi:10.1038/nature07947
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229551
dc.subjectCosmology and Nongalactic Astrophysics
dc.titleSpatial correlation between submillimetre and Lyman-alpha galaxies in the SSA 22 protocluster
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