Ca. Grady et al., Hubble Space Telescope space telescope imaging spectrograph coronagraphic imaging of the Herbig Ae star Ab Aurigae, ASTROPHYS J, 523(2), 1999, pp. L151-L154
We present the first broadband, coronagraphic Hubble Space Telescope images
of the bright, optically visible, isolated Herbig Ae star AB Aurigae. The
Space Telescope Imaging Spectrograph (STIS) images reveal extended circumst
ellar nebulosity (r approximate to 1300 AU) covering the region of the mill
imeter continuum and CO disk. The structure is observed in the disk on spat
ial scales down to 0." 1 (14 AU) and exhibits a north-south asymmetry. A co
mparison of the STIS data with scattering models for flared disks or disks
+ envelopes suggests that the disk inclination is i less than or equal to 4
5 degrees from the plane of the sky.