We present the discoveries of KELT-25b ( TIC 65412605 , TOI-626.01 ) and KELT-26b ( TIC 160708862 , TOI-1337.01 ) , two transiting companions orbiting relatively bright , early A-stars .
The transit signals were initially detected by the KELT survey , and subsequently confirmed by TESS photometry .
KELT-25b is on a 4.40-day orbit around the V = 9.66 star CD-24 5016 ( T _ { eff } = 8280 ^ { +440 } _ { -180 } K , M _ { \star } = 2.18 ^ { +0.12 } _ { -0.11 } M _ { \odot } ) , while KELT-26b is on a 3.34-day orbit around the V = 9.95 star HD 134004 ( T _ { eff } = 8640 ^ { +500 } _ { -240 } K , M _ { \star } = 1.93 ^ { +0.14 } _ { -0.16 } M _ { \odot } ) , which is likely an Am star .
We have confirmed the sub-stellar nature of both companions through detailed characterization of each system using ground-based and TESS photometry , radial velocity measurements , Doppler Tomography , and high-resolution imaging .
For KELT-25 , we determine a companion radius of R _ { P } = 1.64 ^ { +0.039 } _ { -0.043 } R _ { J } , and a 3-sigma upper limit on the companion ’ s mass of \sim 64 ~ { } M _ { J } .
For KELT-26b , we infer a planetary mass and radius of M _ { P } = 1.41 ^ { +0.43 } _ { -0.51 } M _ { J } and R _ { P } = 1.940 ^ { +0.060 } _ { -0.058 } R _ { J } .
From Doppler Tomographic observations , we find KELT-26b to reside in a highly misaligned orbit .
This conclusion is weakly corroborated by a subtle asymmetry in the transit light curve from the TESS data .
KELT-25b appears to be in a well-aligned , prograde orbit , and the system is likely a member of a cluster or moving group .