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Fig. 8

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Observed and modeled profiles of the surface brightness of comet C/2014 B1 (Schwartz) in the g-sdss and r-sdss filters along the jets and perpendicular to them for images derived on 2017 January 23. The observed profiles were measured through the central pixel with maximum intensity and the coma perpendicular to the J1-J2 direction (panels a): PA = 89° for the solar direction and PA = 269° for the anti-solar direction and along both jets (panels b) in the directions PA(J1) = 179° and PA(J2) = 350°. The observed and modeled profiles are designated by the black line and colored lines, respectively. The calculated total coma + nucleus profile is shown by a red line; a dashed blue line is the coma profile without the nucleus; and a solid gray line is the nucleus profile. The negative distance is in the solar direction, and the positive distance is in the anti-solar direction.

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