adventures in high angular resolution astrophysicsadventures in high angular resolution astrophysics...
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![Page 1: Adventures in High Angular Resolution AstrophysicsAdventures in High Angular Resolution Astrophysics Mike Sitko SSI/CEPS - 27/4/2016 How do planetary systems form & evolve? 1. Look](https://reader033.vdocument.in/reader033/viewer/2022060209/5f04627f7e708231d40db5ea/html5/thumbnails/1.jpg)
Adventures in High Angular Resolution Astrophysics
Mike Sitko
SSI/CEPS - 27/4/2016
![Page 2: Adventures in High Angular Resolution AstrophysicsAdventures in High Angular Resolution Astrophysics Mike Sitko SSI/CEPS - 27/4/2016 How do planetary systems form & evolve? 1. Look](https://reader033.vdocument.in/reader033/viewer/2022060209/5f04627f7e708231d40db5ea/html5/thumbnails/2.jpg)
How do planetary systems form &
evolve?
1. Look at “baby” planetary systems "2. look at mature planetary systems "
SSI/CEPS - 27/4/2016
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Beyond the “frost line” ice can condense, allowing more massive planets to form
Refractories (rock, metal)
volatiles (ices & gas) and refractories
Silicates: Pyroxenes, Olivines Volatile Ices
SSI/CEPS - 27/4/2016
(Mg,Fe,Ca)SiO3,(Mg,Fe)2SiO4 H2O,CH 4 ,NH 3
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Jupiter
Earth
Super-Earths
Hot Jupiters
Jupiter
55 Cancri e
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Okay, where did all the “Hot Jupiters” come from?
Cannot form inside the snow/frost line
Formed further out & migrated - planet-disk drag
A nice “little” (8 MB) of one example, by Phil Armitage, U Colorado
start
SSI/CEPS - 27/4/2016
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Also, planetary migration
“Nice Model”""“Grand Tack”"
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“Pre-Transitional Disks”
SSI/CEPS - 27/4/2016
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High Angular Resolution Astrophysics:
• Direct Imaging• Interferometry
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Adaptive Optics
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In actual operation....
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Subaru High Contrast Instrumentation
Subaru – 8.2 m telescope"AO 188"Classical Lyot Coronagraph"HiCIAO – NIR Science camera"Direct Imaging"Simultaneous Differential Imaging"Polarization Differential Imaging"Modes can be combined"
Strategic Exploration of Exoplanets and Disks with Subaru
SSI/CEPS - 27/4/2016
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SAO 206462
from Muto et al.2012, "ApJL, 748, L22"
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SSI/CEPS - 27/4/2016
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Inner Disk Structure from InterferometryVery Large Telescope Interferometer - VLTILargest baseline 130 m.
Spatial resolution - a few milli-arcsec
http://www.youtube.com/watch?v=u5GzsdwdnWMSSI/CEPS - 27/4/2016
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Non-Redundant Sparse Aperture Mask Interferometry
Sallum & Follette 2015
Protoplanets in a disk
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V1247 Ori, a Gapped Pre-Transitional Disk
from Kraus et al. 2013, ApJ, 768, 80
(like HD 142527)
VLTIKeck Interf.
Gemini Speckle
Keck SAM
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The New Reality!
Subaru Telescope SCExAO
Apodized Spot
“Extreme Adaptive Optics”
Also SPHERE (VLT), GPI (Gemini)SSI/CEPS - 27/4/2016
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Atacama Large Millimeter/submillimeter Array (ALMA)
HL Tau"
SSI/CEPS - 27/4/2016
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Large Binocular TelescopeMt. Graham, Arizona
Expected spatial resolution ~0.01 arcsec
SSI/CEPS - 27/4/2016