Oxford SWIFT integral field spectrograph and multiwavelength observations of the Eagle galaxy at z=0.77

Oxford SWIFT integral field spectrograph and multiwavelength observations of the Eagle galaxy at z=0.77

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The 'Eagle' galaxy at a redshift of 0.77 is studied with the Oxford Short Wavelength Integral Field Spectrograph (SWIFT) and multiwavelength data from the All-wavelength Extended Groth strip International Survey (AEGIS). It was chosen from AEGIS because of the bright and extended emission...

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Bibliographic Details
Main Authors: Kassin, SA, Fogarty, L, Goodsall, T, Clarke, F, Houghton, R, Salter, G, Thatte, N, Tecza, M, Davies, R, Weiner, B, Willmer, C, Salim, S, Cooper, M, Newman, J, Bundy, K, Conselice, C, Koekemoer, A, Lin, L, Moustakas, L, Wang, T
Format: Journal article
Language:English
Published: 2011
Description
Summary:The 'Eagle' galaxy at a redshift of 0.77 is studied with the Oxford Short Wavelength Integral Field Spectrograph (SWIFT) and multiwavelength data from the All-wavelength Extended Groth strip International Survey (AEGIS). It was chosen from AEGIS because of the bright and extended emission in its slit spectrum. 3D kinematic maps of the Eagle reveal a gradient in velocity dispersion which spans 35-75 ± 10kms-1 and a rotation velocity of 25 ± 5kms-1 uncorrected for inclination. Hubble Space Telescope images suggest it is close to face-on. In comparison with galaxies from AEGIS at similar redshifts, the Eagle is extremely bright and blue in the rest-frame optical, highly star forming, dominated by unobscured star formation and has a low metallicity for its size. This is consistent with its selection. The Eagle is likely undergoing a major merger and is caught in the early stage of a starburst when it has not yet experienced metal enrichment or formed the mass of dust typically found in star-forming galaxies. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS.

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