DIRECT IMAGING OF FINE STRUCTURES IN GIANT PLANET-FORMING REGIONS OF THE PROTOPLANETARY DISK AROUND AB AURIGAE

By J. Hashimoto, Motohide Tamura, T. Muto, T. Kudo, M. Fukagawa, T. Fukue, M. Goto, C. Grady, T. Henning, K. Hodapp and 42 more. 2011

174 citations recorded by the source corpus.

We report high-resolution 1.6 μm polarized intensity (PI) images of the circumstellar disk around the Herbig Ae star AB Aur at a radial distance of 22 AU (0.″15) up to 554 AU (3.″85), which have been obtained by the high-contrast instrument HiCIAO with the dual-beam polarimetry. We revealed complicated and asymmetrical structures in the inner part (≲140 AU) of the disk while confirming the previously reported outer (r ≳ 200 AU) spiral structure. We have imaged a double ring structure at ∼40 and ∼100 AU and a ring-like gap between the two. We found a significant discrepancy of inclination angles between two rings, which may indicate that the disk of AB Aur is warped. Furthermore, we found seven dips (the typical size is ∼45 AU or less) within two rings, as well as three prominent PI peaks at ∼40 AU. The observed structures, including a bumpy double ring, a ring-like gap, and a warped disk in the innermost regions, provide essential information for understanding the formation mechanism of recently detected wide-orbit (r > 20 AU) planets.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/0f2768b0d5a0a9ea1698e9b35e4204b074414e61

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Citations in the corpus

• Multiple Disk Gaps and Rings Generated by a Single Super-Earth (2017, background): “Density waves (in, e.g., AB Aur; Hashimoto et al. 2011; Tang et al. 2017).”
• STRUCTURES IN THE PROTOPLANETARY DISK OF HD142527 SEEN IN POLARIZED SCATTERED LIGHT (2013, unknown): “…light in scattered-light observations and has recently been successfully applied to several protoplanetary disks (e.g., Quanz et al. 2011, 2012, 2013; Hashimoto et al. 2011, 2012; Muto et al. 2012; Tanii et al. 2012; Kusakabe et al. 2012; Mayama et al. 2012; Grady et al. 2013; Garufi et al. 2013).”
• OBSERVATIONAL SIGNATURES OF PLANETS IN PROTOPLANETARY DISKS: SPIRAL ARMS OBSERVED IN SCATTERED LIGHT IMAGING CAN BE INDUCED BY PLANETS (2015, background): “These observations obtained polarized intensity (PI = +Q U2 2 , the linear polarization component in the scattered light) images as a way to suppress the central starlight (Hinkley et al. 2009; Hashimoto et al. 2011; Quanz et al. 2011).”
• Imaging Extrasolar Giant Planets (2016, background): “′′1 with exceptional clarity (e.g., Thalmann et al. 2010; Hashimoto et al. 2011; Mayama et al. 2012; Muto et al. 2012).”
• THREE-DIMENSIONAL MAGNETOHYDRODYNAMIC SIMULATIONS OF CIRCUMBINARY ACCRETION DISKS: DISK STRUCTURES AND ANGULAR MOMENTUM TRANSPORT (2011, background): “To date, however, only a few possible disk-planet systems have been directly imaged (e.g., Greaves et al. 2008; Kalas et al. 2008; Hashimoto et al. 2011).”
• Shadows and spirals in the protoplanetary disk HD 100453 (2016, background): “Until now, spiral arms have been unambiguously detected in PDI observations of six Herbig Ae disks: HD 100453 (Wagner et al. 2015a, this work); AB Aur (Hashimoto et al. 2011); HD 142527 (Canovas et al. 2013; Avenhaus et al. 2014); SAO 206462 (Muto et al. 2012; Garufi et al. 2013; Stolker et al. 2016”
• Observational Signatures of Planets in Protoplanetary Disks I: Gaps Opened by Single and Multiple Young Planets in Disks (2014, background): “…Avenhaus et al. 2014) and Subaru (the Subaru Strategic Exploration of Exoplanets and Disks Survey, Tamura 2009; Tsukagoshi et al. 2014; Takami et al. 2013; Follette et al. 2013; Grady et al. 2013; Tanii et al. 2012; Mayama et al. 2012; Kusakabe et al. 2012; Muto et al. 2012; Hashimoto et al. 2011).”
• Small vs. large dust grains in transitional disks: do different cavity sizes indicate a planet? - SAO 206462 (HD 135344B) in polarized light with VLT/NACO (2013, background): “On the other hand, some objects (e.g. GM Aur, Gräfe et al. 2011) do not show any dissimilarity in the cavity size for different grain sizes.”
• DISCOVERY OF SMALL-SCALE SPIRAL STRUCTURES IN THE DISK OF SAO 206462 (HD 135344B): IMPLICATIONS FOR THE PHYSICAL STATE OF THE DISK FROM SPIRAL DENSITY WAVE THEORY (2012, background): “Among several possible causes for the spiral structures (see also Hashimoto et al. 2011), one interesting idea is that planets excite them.”
• On the diversity and statistical properties of protostellar discs (2018, background): “Examples of spiral waves in Class II ob- c© 0000 RAS, MNRAS 000, 000–000 10 M. R. Bate Sinks 2, 21 jects and transition discs include: AB Aur (Hashimoto et al. 2011), MWC 758 (Grady et al. 2013; Benisty et al. 2015), SAO 206462 (Muto et al. 2012; Garufi et al. 2013; Stolker et al. 2016), HD 100546…”