. . "E_{\\mathit{B-V}}" . "E_B-V" . "wavelength-selective extinction (B-V)"@en . "colour excess (B-V)"@en . "reddening (B-V)"@en . . "Reddening causes the star to appear redder if more dust or gas is between the star and the observer. The standard reddening is measured using the B and V passbands."@en .