We present measurements of the spin-orbit misalignments of the hot Jupiters HAT-P-41 b and WASP-79 b , and the aligned warm Jupiter Kepler-448 b .
We obtained these measurements with Doppler tomography , where we spectroscopically resolve the line profile perturbation during the transit due to the Rossiter-McLaughlin effect .
We analyze time series spectra obtained during portions of five transits of HAT-P-41 b , and find a value of the spin-orbit misalignment of \lambda = -22.1 _ { -6.0 } ^ { +0.8 \circ } .
We reanalyze the radial velocity Rossiter-McLaughlin data on WASP-79 b obtained by [ Addison et al .
( 2013 ) ] using Doppler tomographic methodology .
We measure \lambda = -99.1 _ { -3.9 } ^ { +4.1 \circ } , consistent with but more precise than the value found by [ Addison et al .
( 2013 ) ] .
For Kepler-448 b we perform a joint fit to the Kepler light curve , Doppler tomographic data , and a radial velocity dataset from [ Lillo-Box et al .
( 2015 ) ] .
We find an approximately aligned orbit ( \lambda = -7.1 ^ { +4.2 \circ } _ { -2.8 } ) , in modest disagreement with the value found by [ Bourrier et al .
( 2015 ) ] .
Through analysis of the Kepler light curve we measure a stellar rotation period of P _ { \mathrm { rot } } = 1.27 \pm 0.11 days , and use this to argue that the full three-dimensional spin-orbit misalignment is small , \psi \sim 0 ^ { \circ } .