The evolution of the content of heavy elements in galaxies, the relative chemical
abundances, their spatial distribution, and how these scale with various galactic properties …

▪ Abstract The Goddard High-Resolution Spectrograph (GHRS) aboard the Hubble Space
Telescope (HST) has yielded precision abundance results for a range of interstellar …

An investigation is made of the merits of various emission-line intensity ratios for classifying
the spectra of extragalactic objects. It is shown empirically that several combinations of …

A revised method of classification of narrow-line active galaxies and H II region-like galaxies
is proposed. It involves the line ratios which take full advantage of the physical distinction …

Molecule formation and infrared emission in fast interstellar shocks. III - Resu ADS Classic is
now deprecated. It will be completely retired in October 2019. This page will automatically …

The paper analyzes the structure of fast shocks incident upon interstellar gas of ambient
density from 10 to the 7th per cu cm, while focusing on the problems of formation and …

ABSTRACT A study of gas-phase element abundances reported in the literature for 17
different elements sampled over 243 sight lines in the local part of our Galaxy reveals that …

We have reviewed the chemistry and cooling behaviour of low-density (n< 10^ 4 cm^-3)
primordial gas and devised a cooling model wich involves 19 collisional and 9 radiative …

Theory of interstellar shocks ADS Classic is now deprecated. It will be completely retired in
October 2019. This page will automatically redirect to the new ADS interface at that point …

The Epoch of Reionization (EoR) represents a milestone in the evolution of our Universe.
Star-forming galaxies that existed during the EoR likely emitted a significant fraction (~ 5 …