Recent star formation in high-redshift early-type galaxies : Insights from the rest-frame UV

Kaviraj, S., Khochfar, S., Schawinski, K., Silk, J., Yi, S.K., Gawiser, E. and Van Dokkum, P.G. (2007) Recent star formation in high-redshift early-type galaxies : Insights from the rest-frame UV. Proceedings of the International Astronomical Union, 3 (S245). pp. 195-200. ISSN 1743-9213

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We combine deep UBV RIzJK photometry from the MUSYC survey with redshifts from the COMBO-17 survey to study the rest-frame ultraviolet (UV) properties of 674 high-redshift (0.5 <z <1) early-type galaxies, drawn from the Extended Chandra Deep Field South (E-CDFS). Galaxy morphologies are determined through visual inspection of Hubble Space Telescope (HST) images taken from the GEMS survey. We harness the sensitivity of the UV to young ( 20.5) counterparts form 30-60 percent of their mass in the same redshift range.