SHADOWS CAST BY A WARP IN THE HD 142527 PROTOPLANETARY DISK

By Sebastián Marino, S. Pérez, S. Casassus. 2014

151 citations recorded by the source corpus.

Detailed observations of gaps in protoplanetary disks have revealed structures that drive current research on circumstellar disks. One such feature is the two intensity nulls seen along the outer disk of the HD 142527 system, which are particularly well traced in polarized differential imaging. Here we propose that these are shadows cast by the inner disk. The inner and outer disk are thick, in terms of the unit-opacity surface in the H band, so that the shape and orientation of the shadows inform on the three-dimensional structure of the system. Radiative transfer predictions on a parametric disk model allow us to conclude that the relative inclination between the inner and outer disks is 70° ± 5°. This finding taps the potential of high-contrast imaging of circumstellar disks, and bears consequences on the gas dynamics of gapped disks, as well as on the physical conditions in the shadowed regions.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/234d3126df6ee10fc66206c8fb815726d0c4b66d

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In Astronomy and Astrophysics

1. T. Birnstiel
2. Xue-Ning Bai
3. D. Wilner
4. S. Andrews
5. C. Dullemond
6. Zhaohuan Zhu
7. A. Hughes
8. Anders Johansen

In Instrumentation

1. S. Andrews
2. Xue-Ning Bai
3. T. Birnstiel
4. D. Wilner
5. Zhaohuan Zhu
6. A. Hughes
7. J. Carpenter
8. C. Dullemond

Citations in the corpus

• The Disk Substructures at High Angular Resolution Project (DSHARP). VI. Dust Trapping in Thin-ringed Protoplanetary Disks (2018, background): “But these transitional disks seem to be rather violent environments, possibly with strong warps (Marino et al. 2015; Benisty et al. 2017) and companion-induced spirals (Dong et al. 2016).”
• Shadows and spirals in the protoplanetary disk HD 100453 (2016, background): “As the inner and outer disks must be significantly misaligned to create deep shadows (Marino et al. 2015), we assume that the near side of the outer disk is in the SW, while the near side of the inner disk is in the NE.”
• OBSERVATIONAL SIGNATURES OF PLANETS IN PROTOPLANETARY DISKS: SPIRAL ARMS OBSERVED IN SCATTERED LIGHT IMAGING CAN BE INDUCED BY PLANETS (2015, background): “At this moment resolved mm observations of these objects suffer from insufficient spatial resolution, and could not pinpoint the mm counterparts of these arms (Chapillon et al. 2008; Isella et al. 2010, 2013; Andrews et al. 2011; Pérez et al. 2014; Marino et al. 2015).”
• The Disk Substructures at High Angular Resolution Project (DSHARP). I. Motivation, Sample, Calibration, and Overview (2018, background): “…et al. 2013; Pérez et al. 2014), additional rings (Fedele et al. 2017; van der Plas et al. 2017), warped geometries (and/or radial inflows; Rosenfeld et al. 2012, 2014; Marino et al. 2015; Casassus et al. 2018), and spiral arms (Christiaens et al. 2014; Boehler et al. 2018; Dong et al. 2018).”