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We aim to investigate the origin of the HI Br$\gamma$ emission in young starsby using GRAVITY to image the innermost region of circumstellar disks, whereimportant physical processes such as accretion and winds occur. With highspectral and angular resolution, we focus on studying the continuum and the HIBr$\gamma$-emitting area of the Herbig star HD58647. Using VLTI-GRAVITY, weconducted observations of HD58647 with both high spectral and high angularresolution. Thanks to the extensive $uv$ coverage, we were able to obtaindetailed images of the circumstellar environment at a sub-au scale,specifically capturing the continuum and the Br$\gamma$-emitting region.Through the analysis of velocity-dispersed images and photocentre shifts, wewere able to investigate the kinematics of the HI Br$\gamma$-emitting region.The recovered continuum images show extended emission where the disk major axisis oriented along a position angle of 14\degr. The size of the continuumemission at 5-sigma levels is $\sim$ 1.5 times more extended than the sizesreported from geometrical fitting (3.69 mas $\pm$ 0.02 mas). This resultsupports the existence of dust particles close to the stellar surface, screenedfrom the stellar radiation by an optically thick gaseous disk. Moreover, forthe first time with GRAVITY, the hot gas component of HD58647 traced by theBr$\gamma$ ,has been imaged. This allowed us to constrain the size of theBr$\gamma$-emitting region and study the kinematics of the hot gas; we find itsvelocity field to be roughly consistent with gas that obeys Keplerian motion.The velocity-dispersed images show that the size of the hot gas emission isfrom a more compact region than the continuum (2.3 mas $\pm$ 0.2 mas). Finally,the line phases show that the emission is not entirely consistent withKeplerian rotation, hinting at a more complex structure in the hot gaseousdisk.

The GRAVITY young stellar object survey: XI. Imaging the hot gas emission around the Herbig Ae star HD 58647