Sentences with phrase «weak spectral line»
Not exact matches
Near - IR spectroscopy shows a spectral type of L7 and reveals a triangular H - band continuum and weak alkali (K I and Na I) lines, hallmarks of low surface gravity.
https://arxiv.org/
The primary shows weaker alkali lines than field dwarfs of similar spectral type, but still consistent with either a high - gravity dwarf or a younger object of hundreds of millions of years.