Mg II emissions in the IUE spectra of 91 cool stars are analyzed in a systematic search for interstellar components. About 60 percent of the stars show evidence...
Distribution for the Regular Component of the Galactic Magnetic Field Using 5-Year WMAP Data
We have studied the spatial structure of the three dimensional large-scale pattern of the Galactic Magnetic Field using the polarization maps obtained by the...
Distribution of siderophile and other trace elements in melt rock at the Chicxulub impact structure
Recent isotopic and mineralogical studies have demonstrated a temporal and chemical link between the Chicxulub multiring impact basin and ejecta at the...
Distribution of star formation in galactic bars as seen in the S4G survey
The torques exerted by stellar bars are expected to provoke the flow of cold gas within the disk, driving the secular evolution of the inner parts of the galaxy...
Diversity of terrestrial planets: a link to the chemical makeup of their host stars
With the swift advance in exoplanet sciences it is now possible to characterize not only the fundamental parameters (mass and radius) of planets but also their...
This report is on activities of the Division at the General Assembly in Rio de Janeiro. Summaries of scientific activities over the past triennium have been...
Division II provides a forum for astronomers studying a wide range of problems related to the structure, radiation and activity of the Sun, and its interaction...