21 papers
A search for narrowband technosignatures from LTT 3780 with the Allen Telescope Array and the Karl G. Jansky Very Large Array
Chenoa D. Tremblay, Sofia Z. Sheikh, Vishal Gajjar +9
The LTT3780 system hosts two known exoplanets-LTT3780b, a rocky super-Earth, and LTT3780c, a temperate sub-Neptune-orbiting a nearby M dwarf on opposite sides of the radius valley.…
Transmission Spectrum of the Benchmark Temperate Exo-Neptune TOI-1231 b
Subhajit Sarkar, Nikku Madhusudhan, Lorenzo Pica-Ciamarra +4
The JWST is revolutionizing our understanding of the temperate sub-Neptune population through atmospheric spectroscopy. The nature of these planets remains debated, as their bulk p…
The Mid-Infrared Transmission Spectrum of the Temperate Sub-Neptune TOI-270 d
MÃ¥ns Holmberg, Nikku Madhusudhan, Martin Binet +3
Observations of temperate sub-Neptunes with JWST have ushered in a new era for atmospheric characterization of small exoplanets. In particular, the MIRI instrument provides a uniqu…
A Systematic Search for Trace Molecules in the Atmosphere of Exoplanet K2-18 b
Lorenzo Pica-Ciamarra, Nikku Madhusudhan, Gregory J. Cooke +2
The first transmission spectrum of the habitable-zone sub-Neptune K2-18 b with JWST has opened a new avenue for atmospheric characterisation of temperate low-mass exoplanets. The o…
Ecological modelling of hycean worlds
Gregory J. Cooke, Nikku Madhusudhan, Emily G. Mitchell
New observations are opening the possibility of characterising habitable environments in exoplanetary systems, with the recent example of the candidate hycean world K2-18 b. This m…
Ground-based Atmospheric Characterization of Super-Earth L 98-59 d at High Spectral Resolution
Connor J. Cheverall, Nikku Madhusudhan, Savvas Constantinou +1
Atmospheric characterization of exoplanets using ground-based high-resolution transmission spectroscopy has traditionally focussed on large and close-in planets, such as hot Jupite…