. 6). From their rest-frame UV emission we can estimate individual star formation rates, and study evolution of the star formation rate density with cosmic time. At lower redshifts, near-infrared spectroscopy (including slitless spectroscopy with WFC3 on HST) has enabled us to measure star formation rates at redshifts beyond one through the redshifted rest-frame optical lines. I will review current work on this, and look to future developments (in particular JWST).

... Printed in U.S.A. THE STELLAR DISK THICKNESS OF LOW SURFACE BRIGHTNESS GALAXIES D. Bizyaev 1,2,3 and S. Kajsin 4 Received 2003 October 23; accepted 2004 June 9 ABSTRACT We present surface photometry results for a sample of 11 edge-on galaxies observed with the 6 m telescope at the Special Astrophysical Observatory, Russia. ... We find from a comparison of photometric scales that the stellar disks of LSB galaxies are thinner than those of high surface brightness ( HSB) galaxies. ... UGC 11301 .. ...