We study the influence of environment on the structure of disc galaxies, using imfit to measure the g- and r-band structural parameters of the surface...

Analyses of Type Ia supernovae (SNe Ia) have found puzzling correlations between their standardized luminosities and host galaxy properties: SNe Ia in high-mass...

By cross-correlating templates constructed from the Two Micron All Sky Survey Extended Source Catalog with the first-year data from the Wilkinson Microwave...

Context. In the past few years, new methods that allow measurement of local magnetic fields in photospheres of distant stars have been developed. The first...

The errors associated with a segmented primary mirror limit the image quality obtainable with those astronomical telescopes which employ them. It is necessary...

Time series CCD photometry of the inner coma of active comets has been used over the last twenty years to determine the rotation period of their nucleus...

An analytical model has been developed to empirically study the effects of stellar spots and faculae on the observed equivalent widths of Li i 6708, Na i 5896...

Study Analysis Group 21 (SAG21) of NASA's Exoplanet Exploration Program Analysis Group was organized to study the effect of stellar contamination on space-based...

The numerical solution of the idealized, but self-consistent, LTE atmosphere problem posed by the authors has been used to introduce the effect of multiple...