Rotation on sub-kpc scales in the strongly lensed z~3 'arc&core' and implications for high-redshift galaxy dynamics

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dc.creatorNesvadba, N. P. H.
dc.creatorLehnert, M. D.
dc.creatorFrye, B. L.
dc.date2008-10-10
dc.date.accessioned2026-07-07T10:09:09Z
dc.date.available2026-07-07T10:09:09Z
dc.descriptionStrongly lensed galaxies at high redshift provide a unique window into the early universe. We compare the internal kinematics of the strongly lensed Lyman-break galaxy (LBG) 'arc&core' at z=3.2 (the first strongly lensed z~3 LBG with the signs of rotation on sub-kiloparsec scales) with an LBG that is not gravitationally lensed, as well as with a larger sample of actively star-forming galaxies at slightly lower redshifts. All galaxies have deep rest-frame optical integral-field spectroscopy obtained with the VLT. The unlensed galaxies appear to have a larger ratio of random to bulk motion. Field galaxies also have broader lines than strongly lensed LBGs with rest-optical spectroscopy, where spectra were extracted from regions with similar physical size. To ensure observational success, studies of high-redshift galaxy kinematics often focus on bright and luminous targets, and our comparison suggests that this may lead to a serious bias.
dc.descriptionTo appear in the proceedings of the annual meeting of the French Society of Astronomy and Astrophysics (SF2A) held in Paris, July 2008
dc.identifierhttps://arxiv.org/abs/0810.1852
dc.identifierhttp://arxiv.org/abs/0810.1852
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/171232
dc.subjectAstrophysics
dc.titleRotation on sub-kpc scales in the strongly lensed z~3 'arc&core' and implications for high-redshift galaxy dynamics
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