Skip to Main content Skip to Navigation
Journal articles

Connecting the shadows: probing inner disk geometries using shadows in transitional disks

Abstract :
Aims: Shadows in transitional disks are generally interpreted as signs of a misaligned inner disk. This disk is usually beyond the reach of current day high contrast imaging facilities. However, the location and morphology of the shadow features allow us to reconstruct the inner disk geometry.
Methods: We derive analytic equations of the locations of the shadow features as a function of the orientation of the inner and outer disk and the height of the outer disk wall. In contrast to previous claims in the literature, we show that the position angle of the line connecting the shadows cannot be directly related to the position angle of the inner disk.
Results: We show how the analytic framework derived here can be applied to transitional disks with shadow features. We use estimates of the outer disk height to put constraints on the inner disk orientation. In contrast with the results from Long et al. (2017, ApJ, 838, 62), we derive that for the disk surrounding HD 100453 the analytic estimates and interferometric observations result in a consistent picture of the orientation of the inner disk.
Conclusions: The elegant consistency in our analytic framework between observation and theory strongly support both the interpretation of the shadow features as coming from a misaligned inner disk as well as the diagnostic value of near infrared interferometry for inner disk geometry.
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03692490
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Friday, June 10, 2022 - 10:56:21 AM
Last modification on : Saturday, June 25, 2022 - 3:06:20 AM

File

aa30949-17.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

M. Min, T. Stolker, C. Dominik, M. Benisty. Connecting the shadows: probing inner disk geometries using shadows in transitional disks. Astronomy & Astrophysics, 2017, 604, ⟨10.1051/0004-6361/201730949⟩. ⟨insu-03692490⟩

Share

Metrics

Record views

11

Files downloads

0