Sentences with phrase «weak absorption lines»
«When we looked at the new data, much to our surprise, we found weak absorption lines that could not come from the hot star,» Kupfer said.
http://www.keckobservatory.org/ Not exact matches
Those most similar to class M stars have strong ZrO absorption bands analogous to the TiO bands of class M stars, whereas those most similar to carbon stars have strong sodium D lines and weak C2 bands.
O2 and N2 do have very weak absorption / emission lines in the LWIR range.
CO2 has a main absorption band near 15 um (about wavenumber 667) that includes a strong absorption line at that wavelength with correspondingly weaker lines as one moves into the «wings» toward either 13 or 17 um.