Authored by Jes K. Jurgensen, Arnaud Belloche and Robin T. Garrod, this
PDF delves into the role that astrochemistry plays in the process of star
formation. Recent advances and challenges in the field are addressed, with a
focus on chemical inventories in star-forming regions. Chemical differentiation
and the evolution of the protostar under physical conditions are addressed by
the authors, who underscore fractionation as one of the processes. The
communication of physical and chemical aspects of star formation is made by the
document as it exposes the reader to such complicated interactions which finally
end in the emergence of stars and development of chemical complexity in space.
Author(s): Jes K. Jurgensen, Arnaud Belloche, and Robin T.
Garrod
This is a lecture note by Prof. Jesse Kroll, focusing on chemical
transformations in trace species of Earth's atmosphere. The note highlighted how
human activity impacts both air quality and climate-from covering major concepts
such as photochemistry and ozone-depleting compounds to aerosol chemistry. The
note provides a comprehensive summary of what drives atmospheric chemistry, from
sources and sinks of greenhouse gases to names and processes. The paper is
designed for better understanding of the atmospheric processes concerning
anthropogenic influences and their implication in environmental science.
Professor Nigel Mason
discusses in his paper the chemical origins of life, covering the synthesis of
nucleobases and DNA. Included in this also are the historical experiments, such
as Urey-Miller, and examines the chemistry of prebiotic types in conditions
similar to those prevailing on early Earth. This note covers important results
with regard to the question of life on Mars: investigations about meteorites
from Mars and ozone formation and depletion. It is an interesting overview of
astrochemical processes that could well have led to the origin of life on Earth
and elsewhere in the universe, founded on a blend of experimental data and
theoretical insights.