Program: GS-2012A-C-3
Title: | Observations of Water Ice Distribution in the Disk |
PI: | Mitsuhiko Honda |
Co-I(s): | Misato Fukagawa, Akio, K. Inoue, Hiroshi Terada, Naruhisa Takato, Motohide Tamura, Yoshiko, K. Okamoto |
Abstract
Icy grains play an important role on planetesimal/planet formation and related matters. Therefore, to reveal ice dust
distribution within a protoplanetary disk is an important work for understanding planet formation. However, observations
of icy grain IN THE DISK are scarce due to various observational limitations. Here we propose observations to trace the
icy grains by making K, H2O ice, and L? imaging photometric observations of disk scattered light to derive H2O ice dust
distribution in a disk surface via 3.1 ?m absorption. For the moment, only Gemini/NICI is capable of such observations.
We have already demonstrated the effectiveness of such observing method toward Herbig Fe star HD142527. Since some
theoretical studies suggest that there are no ice grains at the surface of the disk around A/B stars due to intense UV
irradiation, we propose to observe disks around Herbig Be star HD100546. When we fail to detect the ice feature, it
supports the theoretical prediction that photodesorption is important. While the ice feature is detected, it requires
reconsideration of the theories and provides an important constraint for the disk chemistry.
Publications using this program's data
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[data]
[ADS] Polarimetric Imaging of Large Cavity Structures in the Pre-transitional Protoplanetary Disk around PDS 70: Observations of the Disk
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[data]
[ADS] Recovery of the Candidate Protoplanet HD 100546 b with Gemini/NICI and Detection of Additional (Planet-induced?) Disk Structure at Small Separations
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[data]
[ADS] Water Ice at the Surface of the HD 100546 Disk
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[data]
[ADS] Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70
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[data]
[ADS] Spiral Arms in Disks: Planets or Gravitational Instability?
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[data]
[ADS] Orbital and atmospheric characterization of the planet within the gap of the PDS 70 transition disk
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[data]
[ADS] Constraining the Nature of the PDS 70 Protoplanets with VLTI/GRAVITY
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[data]
[ADS] ISPY: NACO Imaging Survey for Planets around Young stars. The demographics of forming planets embedded in protoplanetary disks