A VLT colour image of the optical Einstein ring 0047-2808

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dc.creatorWarren, S. J.
dc.creatorLewis, G. F.
dc.creatorHewett, P. C.
dc.creatorMoller, P.
dc.creatorShaver, P.
dc.creatorIovino, A.
dc.date1999-01-20
dc.date.accessioned2026-07-25T13:28:14Z
dc.descriptionThe optical Einstein ring 0047-2808 was imaged by the VLT UT1 during the science verification programme. The ring is the image of a high-redshift z=3.595 star-forming galaxy, with strong Ly-alpha emission at 5589A, gravitationally lensed by a massive early-type galaxy at z=0.485. Relative to earlier NTT data the high signal-to-noise ratio of the VLT Ly-alpha narrow-band image allows much improved constraints to be placed on the surface-brightness profile of the source and on the mass, leading to a measured mass-to-light ratio of M/L(B)~13h for the deflector galaxy. We have combined the VLT B-band and Ly-alpha narrow-band images with a K-band image obtained at UKIRT to produce a deep colour image of the system.
dc.description5 pages, 2 figures, accepted for publication in A&A Letters, VLT special edition
dc.identifierhttps://arxiv.org/abs/astro-ph/9901271
dc.identifierhttp://arxiv.org/abs/astro-ph/9901271
dc.identifier.urihttps://dspace.dare.co.zw/handle/123456789/17552
dc.subjectAstrophysics
dc.titleA VLT colour image of the optical Einstein ring 0047-2808
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