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High Redshift Galaxies in the Hubble Deep Field. Color Selection and Star Formation History to z=4
Piero Madau, Henry C. Ferguson, Mark E. Dickinson +3
The Lyman decrement associated with the cumulative effect of HI in QSO absorption systems along the line of sight provides a distinctive feature for identifying galaxies at z>2.5.…
Limits on Far-UV Emission from Warm Gas in Clusters of Galaxies with the Hopkins Ultraviolet Telescope
W. Van Dyke Dixon, Mark Hurwitz, Henry C. Ferguson
We have searched the far-UV spectra of five clusters of galaxies observed with the Hopkins Ultraviolet Telescope (HUT) for emission in the resonance lines of O VI (1032,1038 A) and…
Far-UV Line Strengths in Elliptical Galaxies
H. C. Ferguson, T. M. Brown, A. F. Davidsen
Much of the far-UV emission from elliptical galaxies is thought to arise from extreme horizontal branch stars and related objects. Only about 10% of the stellar population needs to…