V409 Tau As Another AA Tau: Photometric Observations of Stellar Occultations by the Circumstellar Disk
Joseph E. Rodriguez, Joshua Pepper, Keivan G. Stassun, Robert J., Siverd, Phillip Cargile, David A. Weintraub, Thomas G. Beatty, B. Scott, Gaudi, Eric E. Mamajek, Nicole Sanchez

TL;DR
This paper reports photometric observations of AA Tau and V409 Tau, revealing long-duration dimming events caused by occultations in their circumstellar disks, providing insights into disk structures and planet formation regions at large distances from the stars.
Contribution
It presents new long-term photometric data of V409 Tau and AA Tau, supporting the interpretation of occultations by disk features at >8 AU and >10 AU, respectively, as evidence of disk structures related to planet formation.
Findings
Deep dimming events lasted over 600 days.
Dimming depths of approximately 1.4 magnitudes.
Dimming caused by occultations in circumstellar disks.
Abstract
AA Tau is a well studied young stellar object that presents many of the photometric characteristics of a Classical T Tauri star (CTTS), including short-timescale stochastic variability attributed to spots and/or accretion as well as long duration dimming events attributed to occultations by vertical features (e.g., warps) in its circumstellar disk. We present new photometric observations of AA Tau from the Kilodegree Extremely Little Telescope North (KELT-North) which reveal a deep, extended dimming event in 2011, which we show supports the interpretation by Bouvier et al. (2013) of an occultation by a high-density feature in the circumstellar disk located >8 AU from the star. We also present KELT-North observations of V409 Tau, a relatively unstudied young stellar object also in Taurus-Auriga, showing short timescale erratic variability, along with two separate long and deep dimming…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
