Most of his career was spent in the spectroscopic study of stars.

Electromagnetic radiation was the first source of energy used for spectroscopic studies.

Moore paid particular attention to the spectroscopic studies of binary stars.

Oxidation state can also have effect on spectroscopic studies of compounds.

Donati was also a pioneer in the spectroscopic study of the stars and the sun.

In 1862 he began making spectroscopic studies using his new diffraction grating.

A further spectroscopic study was reported in 2000 which led to a first decay level scheme for the isotope.

Dad's been making a spectroscopic study of Venus's atmosphere.

The information obtained from spectroscopic studies can then be directly related to unperturbed individual molecules.

The exact composition may be determined by spectroscopic studies.