A HIRES/Keck Spectroscopic Investigation of the Measurement of Sodium in the Atmosphere of HD 209458bDOI: info:10.1088/0004-637X/696/2/1355v. 6961355–1366
Langland-Shula, Laura E., Vogt, Steven S., Charbonneau, David, Butler, Paul, and Marcy, Geoff. 2009. "A HIRES/Keck Spectroscopic Investigation of the Measurement of Sodium in the Atmosphere of HD 209458b." The Astrophysical Journal, 696 1355–1366. https://doi.org/10.1088/0004-637X/696/2/1355.