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We report the detection of a companion candidate to the Herbig Ae star HD 100453, using the NACO instrument at the VLT UT4. The separation between the companion candidate and HD 100453 is 1$\farcs$06, and their brightness contrast is 5.1 mag at  K s and 4.2 mag at Br γ . We discuss the possible nature of the newly detected star based on near-infrared photometry. The photometric data are consistent with a 0.3 $M_\odot$ companion to HD 100453, corresponding to a spectral type of M3-M5. This detection could have important implications for the structure of the disk around HD 100453.

VLT/NACO adaptive optics imaging of the Herbig Ae star HD 100453