Galaxy formation and evolution

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VLT-ISAAC near-IR Spectroscopy of ISO selected Hubble Deep Field South Galaxies

(2000)

Authors:

D Rigopoulou, A Franceschini, H Aussel, R Genzel, P van der Werf, CJ Cesarsky, M Dennefeld, S Oliver, M Rowan-Robinson, RG Mann, I Perez-Fournon, B Rocca-Volmerange

Stellar Populations and Galaxy Morphology at High Redshift

(2000)

Authors:

Andrew Bunker, Hyron Spinrad, Daniel Stern, Rodger Thompson, Leonidas Moustakas, Marc Davis, Arjun Dey

Discovery of a color-selected quasar at z=5.50

ASTROPHYSICAL JOURNAL 533:2 (2000) L75-L78

Authors:

D Stern, H Spinrad, P Eisenhardt, AJ Bunker, S Dawson, SA Stanford, R Elston

The Evolution of the Stellar Hosts of Radio Galaxies

(2000)

Authors:

Mark Lacy, Andrew J Bunker, Susan E Ridgway

Ultraviolet imaging of the galaxy cluster CL 0939+4713 (Abell 851) at z = 0.41

Astrophysical Journal 531:2 PART 1 (2000) 684-692

Authors:

LM Buson, F Bertola, M Cappellari, C Chiosi, A Dressler, A Oemler

Abstract:

The first UV F300W and F218W WFPC2 observations of the rich galaxy cluster CL 0939 + 4713 at z = 0.41 are presented and discussed. UV/optical two-color and color-magnitude diagrams of the sources detected in the F300W waveband are constructed. Thanks to preexisting Hubble Space Telescope (HST) optical images of the same field, a morphological classification for the majority of these objects is also provided. Moreover, taking advantage of recent redshift surveys along the CL 0939 + 4713 line of sight, separate diagrams comparing the properties of galaxies belonging to the cluster and to its close projected field are presented. Possible evolutionary effects in the UV from z ∼ 0.4 to the present time are investigated by comparing the rest-frame (mid-UV/optical) colors of galaxies in CL 0939 + 4713 with balloon-borne data of the Coma Cluster, as well as by resorting to suitable galaxy evolution models. Finally, current attempts to constrain the epoch of the UV-upturn onset in evolved populations by means of HST UV observations are discussed.