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UV-optical colors as probes of early-type galaxy evolution
(2007-12-01)
We have studied ∼2100 early-type galaxies in the SDSS DR3 which have been detected by the GALEX Medium Imaging Survey (MIS), in the redshift range O <z <0.1.1. Combining GALEXUV photometry with corollary optical data from ...
The UV properties of E+A galaxies : Constraints on feedback-driven quenching of star formation
(2007-12-01)
We present the first large-scale study of E+A galaxies that incorporates photometry in the ultraviolet (UV) wavelengths. E+A galaxies are 'post-starburst' systems, with strong Balmer absorption lines indicating significant ...
The effect of environment on the ultraviolet color-magnitude relation of early-type galaxies
(2007-12-01)
We use GALEX near-UV (NUV ) photometry of a sample of early-type galaxies selected in the SDSS (Sloan Digital Sky Survey) to study the UV color-magnitude relation (CMR). NUV - r color is an excellent tracer of even small ...
Calculated densities of H3O+(H2O)n,NO2− (H2O)n, CO3− (H2O)n and electron in the nighttime ionosphere of Mars : Impact of solar wind electron and galactic cosmic rays
(2007-12-01)
We have calculated the densities of positive ions and negative ions in the ionosphere of Mars at solar zenith angle 106° between height interval 0 km and 220 km. This model couples ion-neutral, electron neutral, dissociation ...
Magnetic fields in massive star-forming regions
(2007-12-01)
We present the largest sample of high-mass star-forming regions observed using sub- millimetre imaging polarimetry. The data were taken using SCUBA in conjunction with the polarimeter on the JCMT in Hawaii. In total, 16 ...
The look-back time evolution of far-ultraviolet flux from the brightest cluster elliptical galaxies at z <0.2
(2007-12-01)
We present the GALEXUV photometry of the elliptical galaxies in Abell clusters at moderate redshifts (z <0.2) for the study of the look-back time evolution of the UV upturn phenomenon. The brightest elliptical galaxies (M ...
All for one, one for all
(2007-12-01)
Osteoporosis : A teenage perspective
(2007-12)
Objectives: To assess the knowledge and health beliefs, on osteoporosis, of 16-18 year olds in full-time education in the UK. This is believed to be an age where peak bone mass, a significant factor in osteoporosis and ...
Homeostatic role of toll-like receptor 4 in the endothelium and heart
(2007-12)
Toll-like receptor 4 (TLR4) is a pattern recognition receptor for lipopolysaccharide from Gram negative bacteria and thus is integral to the innate immune response in mammals. In addition, TLR4 is associated with atherosclerosis ...