TOI-836 Archives

Top, Upper Panels: Individual visit transmission spectra for ExoTiC-JEDI (left, purples) and Eureka! (right, greens). Lower Panel: Difference between individual visit transmission spectra for ExoTiC-JEDI (left) and Eureka! (right). On average, the ExoTiC-JEDI reductions for visit 1 and visit 2 are consistent to within 39 ppm, while the Eureka! reductions agree to within 48 ppm. The ExoTiC-JEDI and Eureka! reductions are consistent with each other to within the median transit depth uncertainty for both visit 1 and visit 2. Bottom, Upper Panel: Weighted average transmission spectrum from the two visits from the ExoTiC-JEDI (purple) and Eureka! (light green) reductions and joint fit transmission spectrum from the Eureka! reduction (dark green). Lower Panel: Difference between each of the combined ExoTiC-JEDI and Eureka! transmission spectra in ppm. As the difference between the two Eureka! methods is less the 5 ppm (black line), the two ExoTiC-JEDI– Eureka! lines are difficult to distinguish (coloured lines). On average, the combined visit Eureka! and ExoTiC-JEDI spectra are consistent to within 10 ppm. -- astro-ph.EP

Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report

JWST COMPASS: NIRSpec/G395H Transmission Observations of the Super-Earth TOI-836b

by Keith CowingApril 2, 2024April 2, 2024

We present two transit observations of the ~870K, 1.7RE super-Earth TOI-836b with JWST NIRSpec/G395H, resulting in a 2.8-5.2μm transmission spectrum. Using two different reduction pipelines, we obtain a median transit […]

We show the transmission spectrum for each reduction in the top panel and the differences between the reductions (in units of sigma) in the bottom panel. All three of our reductions agree per-point, at the ∼2σ level or better, with a median difference of 6ppm. -- astro-ph.EP

Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Status Report

JWST COMPASS: A NIRSpec/G395H Transmission Spectrum Of The Sub-Neptune TOI-836c

by Keith CowingApril 2, 2024

Planets between the sizes of Earth and Neptune are the most common in the Galaxy, bridging the gap between the terrestrial and giant planets in our Solar System.