Spectroscopic observations refer to the process of studying or examining the properties of an object or substance by analyzing its light. Full definition
The appearance of the plumes in this graphic is based on spectroscopic observations of oxygen and hydrogen in the auroral emissions. (sciencedaily.com)
«Astronomers find evidence of water clouds in first spectrum of coldest brown dwarf: Difficult spectroscopic observations reveal properties of the coldest known object outside of our solar system.» (sciencedaily.com)
The core of the team consisted of Bradac, Huang, Brian Lemaux, and Austin Hoag of UC Davis who are most directly involved with spectroscopic observation and data reduction of galaxies at redshift above seven. (keckobservatory.org)