Sean Terry
@seanterry.bsky.social
Assistant Research Scientist working on the Roman Space Telescope at UMD/NASA.
But why not one perfect solution? This is where we come full-circle ⭕- back to the poor sampling of the light curve, but there are also some remaining degeneracies (which plagues microlensing!). High-res imaging is powerful, but it doesn't make life perfect.
March 20, 2024 at 5:50 PM
But why not one perfect solution? This is where we come full-circle ⭕- back to the poor sampling of the light curve, but there are also some remaining degeneracies (which plagues microlensing!). High-res imaging is powerful, but it doesn't make life perfect.
With these direct measurements of the lens object in the Keck and Hubble data, we now have strong confidence that the lens host is a star with ~0.3 times the mass of the Sun. The mass of the planet orbiting this star is in the super-Earth regime. The lens distance is ~2kpc.
March 20, 2024 at 5:49 PM
With these direct measurements of the lens object in the Keck and Hubble data, we now have strong confidence that the lens host is a star with ~0.3 times the mass of the Sun. The mass of the planet orbiting this star is in the super-Earth regime. The lens distance is ~2kpc.
This measurement of the lens object gives a definitive answer for its mass and distance. We used the Keck and Hubble telescopes many years after the microlensing event to get images like the one here showing a classic 'dipole' feature when we subtract one-star from the image.
March 20, 2024 at 5:49 PM
This measurement of the lens object gives a definitive answer for its mass and distance. We used the Keck and Hubble telescopes many years after the microlensing event to get images like the one here showing a classic 'dipole' feature when we subtract one-star from the image.
Because there is only MOA/OGLE data, the light curve is sparse and poorly sampled, which complicates the modeling of this event. The original studies report many possible solutions (models) that explain the data. Some early solutions even gave a planet orbiting a brown dwarf!
March 20, 2024 at 5:48 PM
Because there is only MOA/OGLE data, the light curve is sparse and poorly sampled, which complicates the modeling of this event. The original studies report many possible solutions (models) that explain the data. Some early solutions even gave a planet orbiting a brown dwarf!
Daytime orb is orbing.
October 9, 2023 at 5:30 PM
Daytime orb is orbing.
IRL Tetris in preparation for the big move.
September 30, 2023 at 8:21 AM
IRL Tetris in preparation for the big move.