The first tutorial workshop dedicated to the application of spectral retrieval techniques to exoplanet data sets obtained with the future Habitable Worlds Observatory will be held in November 2024. This workshop will be designed (1) to familiarize community members with the use of HWO spectral data, and (2) to prepare community members for the HWO Spectral Retrieval Community Data Challenge.
This first workshop will be held on November 18-19, 2024 at the Space Telescope Science Institute in Baltimore, Maryland. We anticipate hosting up to 30 participants in person. There is no registration fee. Partial travel support may be available for U.S.-based participants on a needs basis. Virtual participants can listen and watch the tutorial sessions and discussions, but support for remote interaction will be limited. We anticipate holding a second workshop in early 2025 at second location (TBD) in the US.
Registration Instructions
Registration for in-person participation has closed. You can still attend the meeting remotely via WebEx: https://stsci.webex.com/stsci/j.php?MTID=mef2f2610cc119af72babb5deb65d7e16
Outline for 2-day tutorial workshop on spectral retrieval
November 18th and 19th 2024, at the Space Telescope Science Institute, Baltimore, MD, USA
| Day 1: Introduction and Fundamental Concepts | Sub-topic | Presenter | Begin | End | Duration |
| Introduction to the HWO project & coronagraph instrument technologies | The Habitable Worlds Biosignature Data Challenge | Maggie Turnbull | 9:00 | 9:15 | 0:15 |
| The Habitable Worlds Observatory concept | Giada Arney | 9:15 | 9:45 | 0:30 | |
| Spectroscopy technologies | Neil Zimmerman | 9:45 | 9:55 | 0:10 | |
| Modeling noise and exposure times for directly imaged exoplanets (EXOSIMS) | Sarah Steiger | 9:55 | 10:40 | 0:45 | |
| Mid-morning break | 10:40 | 11:00 | 0:20 | ||
| Planet modeling, radiative transfer, and spectroscopy | Atmosphere modeling and radiative transfer | Geronimo Villanueva | 11:00 | 12:00 | 1:00 |
| Tutorial: Computing blackbody reflected and emission fluxes in a HWO scene with python | |||||
| Lunch break | Lunch and Helpdesk booth to support installation of software for Day 2 | 12:00 | 2:00 | 2:00 | |
| Tools for planet atmosphere modeling and analysis | Tutorial: Earth-like planet as observed with HWO (PSG) | Vincent Kofman | 2:00 | 2:30 | 0:30 |
| Tutorial: Earth-like planet with varied H2O composition (petit RADTRANS / pRT) | Eleonora Alei | 2:30 | 3:00 | 0:30 | |
| Afternoon break | 3:00 | 3:15 | 0:15 | ||
| Tools for planet atmosphere modeling and analysis | Tutorial: Earth-like planet with varied clouds (rfast) | Amber Young | 3:15 | 3:45 | 0:30 |
| Day 2: Retrieval and advanced tools | Sub-topic | Presenter | Begin | End | Duration |
| Atmosphere retrieval | Introduction to retrieval methods | Ryan MacDonald | 9:00 | 10:00 | 1:00 |
| Mid-morning break | 10:00 | 10:15 | 0:15 | ||
| Atmosphere retrieval cont’d | Optimal estimation with synthetic PSG/HWO spectra | Sara Faggi | 10:15 | 11:00 | 0:45 |
| MCMC retrieval with ExoREL | Armen Tokadjian | 11:00 | 11:45 | 0:45 | |
| Lunch break | Lunch and Helpdesk booth to support installation of software for Day 2 | 11:45 | 1:30 | 1:45 | |
| Atmosphere retrieval cont’d | Grid-based retrievals (PSGnest, BARBIE) | Natasha Latouf | 1:30 | 2:30 | 1:00 |
| Afternoon break | 2:30 | 3:00 | 0:30 | ||
| Advanced topics | Stellar activity (fleck) | Brett Morris | 3:00 | 3:30 | 0:30 |
| Machine learning assisted retrievals | Michael Himes | 3:30 | 4:00 | 0:30 |
Lead organizers:
Margaret Turnbull, SETI Institute
Neil Zimmerman, NASA Goddard Space Flight Center
Geronimo Villanueva, NASA Goddard Space Flight Center
Julien Girard, Space Telescope Science Institute
Laurent Pueyo, Space Telescope Science Institute
Thomas Fauchez, NASA Goddard Space Flight Center
Vincent Kofman, NASA Goddard Space Flight Center