MAVIS Science & Instrumentation Workshop

MAVIS 2018 Workshop Program

The details of this program are still being worked out. Talks may be reshuffled around. All talks that appear in here have been accepted.

Time Speakers Presentation
08:30 - 10:30Session 1: Registration and Introduction
08:30 - 09:30Registration
09:30 - 09:40Simon Ellis Welcome + LOC things
09:40 - 10:05Francois Rigaut MAVIS Project Status update
10:05 - 10:30Richard McDermidMAVIS Science Case update
10:30 - 11:00Coffee Break
11:00 - 12:30Session 2: AO Simulation and Performance (Chair: Thierry Fusco)
11:00 - 11:30Simone Esposito MAVIS performance simulations
11:30 - 11:40Francois Rigaut Sky coverage
11:40 - 12:00Benoit Neichel Astrometry with MCAO: State of the art
12:00 - 12:20Elisa Portaluri A-ETC and science applications
12:20 - 12:30Contingency / Group discussion
12:30 - 13:30Lunch
13:30 - 15:00Session 3: Milky Way and its neighbours (Chair: Sarah Martell)
13:30 - 13:45Paolo Turri Accurate photometry with MCAO: lessons learned with GeMS
13:45 - 14:00Devika Kamath The nature and evolution of the circumstellar environment around evolved stars: second-generation protoplanetary disks, jets, and more.
14:00 - 14:15Laura Magrini Stellar clusters with MAVIS
14:15 - 14:30Sarah Martell GCs / spectroscopy
14:30 - 14:45Guiseppe Bono MAVIS & Resolved Stellar Populations: Why, Where and When
14:45 - 15:00Dan Zucker Satellites and streams
15:00 - 15:30Afternoon Tea
15:30 - 17:00 Session 4: Parallel group discussions

  • Group 1: Critical instrument requirements on MWG+neighbours
  • Group 2: Simulations - key parameters, uncertainties, plans
  • Group 3: AO Simulations: What to include, what to probe?
17:00 - 17:30Report from group leads
17:30Adjourn
Time Speakers Presentation
09:00 - 10:30 Session 1: Resolving the contents of external galaxies (Chair: Richard McDermid)
09:00 - 09:20 Luca Casagrande Galactic Archaeology in external galaxies
09:20 - 09:40 Luca Cortese The Hubble Sequence and MAVIS
09:40 - 10:10 Stuart Ryder Core-collapse supernovae with MAVIS
10:10 - 10:30 Joss Bland-Hawthorn Resolving star clusters at all redshifts
10:30 - 11:00 Coffee Break
11:00 - 12:30 Session 2: Opto-Mechanical concepts and design (Chair: Jon Lawrence)
11:00 - 11:20 Roberto Ragazzoni AO module optical design
11:20 - 11:40 Simon Ellis Post-focal instrumentation
11:40 - 11:50 Kyler Kuehn Starbugs
11:50 - 12:00 Joss Bland-Hawthorn Tunable filters
12:00 - 12:20 Fernando Pedechini SHARK-VIS the high res visible AO imager for the LBT
12:20 - 12:25 Francois Rigaut An alternative, transmissive optical design
12:25 - 12:30 Contingency / Group discussion
12:30 - 13:30 Lunch
13:30 - 15:00 Session 3: Probing higher redshifts (Chair: Sarah Sweet)
13:30 - 13:50 Filippo Mannucci Imaging and spectroscopy of high-redshift galaxies with MAVIS
13:50 - 14:10 Trevor Mendel Galaxy evolution on sub-galactic scales with MAVIS
14:10 - 14:30 David Fisher Clumpy mode star formation with MAVIS
14:30 - 14:45 Marco Gullieuszik Galaxy evolution & star formation in different environments through cosmic time
14:45 - 15:00 Tayyaba Zafar Hunting absorption galaxies in emission
15:00 - 15:30 Afternoon Tea
15:30 - 17:00 Session 4: Parallel group discussions

  • Group 1: What spectroscopic capabilities do we need?
    • 1/4 MUSE vs fiber MOS + small IFUs, FTS?
    • Tunable filters?
    • Short wavelength cut-off?
  • Group 2: First thoughts about the TLRs: Can it be done?
  • Group 3: Strategic alignment with future facilities
17:00 - 17:30 Report from group leads
19:00 Workshop Dinner: Ripples at Milson’s Point

Direct Exoplanet Detection with Novel Pre-ELT Instruments

Direct detection of light from exoplanets is the only way to characterise atmospheres at typical solar-system separations, or in "habitable" zones for all but the smallest host stars. Detection rates from current adaptive optics instrument have not met expectations, largely because massive Jovian planets are uncommon at the >10AU separations probed by these instruments. Specialist instrumentation for exoplanet detection on extremely large telescopes are not scheduled for first light, with the possible exception of METIS. I will describe with reference to simulations two key instrument concepts for direct exoplanet detection relevant to Australia's new strategic partnership with ESO: the Hi-5 nulling instrument for the VLTI, as a precursor for the planet formation imager, and the possibility for high dispersion coronagraphy for reflected light exoplanet technology on a VLT. These instruments will be able to detect young exoplanets at solar system scales, and directly detect reflected light from habitable-zone planets orbiting low mass stars.

Time Speakers Presentation
09:00 - 10:30 Session 1: Real-Time Computers, Imaging concepts and data reduction issues (Chair: Lorenzo Busoni)
09:00 - 09:15 Jennifer Dunn (remotely from Victoria) The NFIRAOS Real-Time Computer
09:15 - 09:25 Damien Gratadour (remotely from Hong-Kong) A GPU-based RTC for MAVIS
09:25 - 09:40 Paolo Turri MCAO Photometry tools
09:40 - 09:55 Neichel/Fusco PSF model and estimation. First results from SPHERE and MUSE-NFM
09:55 - 10:30 Discussion:

  • Image stacking (correction of distortion)
  • Optimal exposure time with very low noise vis detectors
  • PSF models / reconstruction (ways to account for field variation)
  • Post processing: deconvolution, extension to wide field and variable PSF, post processing of 3D images ...
10:30 - 11:00 Coffee Break
11:00 - 11:45 Session 2: Alternative instrument concepts (Chair: Simon Ellis)
11:00 - 11:20 Frederic Zamkotsian A MOEMS-based spectro-imager for MAVIS: Science cases and instrumental design
11:20 - 11:30 Michael Ireland MAVIS as a platform for laser-assisted ExAO
11:30 - 11:35 Christian Schwab ADCs
11:35 - 11:45 Contingency/Discussion
11:45 - 12:30 Session 3: Synergies with other facilities (Chair: Francois Rigaut)
11:45 - 12:00 Michael Ireland MICADO/JWST/GAIA
12:00 - 12:15 Looking for volunteers NFIRAOS/WFIRST/SHARK-VIS/GeMS/Sphere
12:15 - 12:30 Group discussion
12:30 - 13:30 Lunch, visit of AAO labs
13:30 - 15:00 Session 4: Project next steps - the path to Phase A (Group Discussion)

  • (30 min workshop wrap-up AO/Instrumentation & Science, then split science/instrument discussion groups)
  • Deliverable documentation overview, timeline
  • Science Case structure
  • Science Team and Focus Groups
  • Instrumentation Subsystem Working Groups
  • Post-focal Instrumentation
  • Real Time Control
  • Wave Front Sensing
15:00 - 15:30 Afternoon Tea
15:30 WORKSHOP ENDS

High-pressure Silicate Phases in Exoplanets: Implications for Dynamics and Thermal Evolution

The evolution of silicate-mantle exoplanets is sensitive to the rheology high-pressure silicate phases. For the Earth, these are present as in the lower mantle as the perovksite-structured mineral bridgmanite, and ferripericlase. Ferripericlase is three orders of magnitude weaker than bridgmanite under equivalent conditions, and mixing laws suggest that the small variations in the proportion of these two constituents can have a large effect on mantle viscosity. In addition, bridgmanite can transition into a denser post-perovskite near the core-mantle boundary, for low-temperatures, such as those within subducted slabs. It has been suggested this phase may be orders of magnitude weaker than bridgmanite, and may play an important role in the dynamics of the bottom thermal boundary layer. These silicate phases are expected to be present over a wide-range of conditions for the interiors of superEarths, due to higher internal pressures. Here we explore numerical models to assess the importance of the dynamics of these phases in the thermal evolution of the interior of exoplanets, and the way it in which this interior evolution manifests itself on the surface

Australian Astronomical Observatory

105 Delhi Rd, North Ryde NSW 2113, Australia

MAVIS Science & Instrumentation Workshop

7 - 9 May 2018

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7-9 May 2018

Australian Astronomical Observatory
105 Delhi Rd,
North Ryde NSW 2113, Australia