output
19922026
Showing 2024 · astro-ph.EPShow all

8 papers · 2 filters

astro-ph.EP2024★ 3 cited

A joint effort to discover and characterize two resonant mini Neptunes around TOI-1803 with TESS, HARPS-N and CHEOPS

T. Zingales, L. Malavolta, L. Borsato +130

We present the discovery of two mini Neptunes near a 2:1 orbital resonance configuration orbiting the K0 star TOI-1803. We describe their orbital architecture in detail and suggest…

astro-ph.EP2024★ 2 cited

The Wanderer: Charting WASP-77A b's Formation and Migration Using a System-Wide Inventory of Carbon and Oxygen Abundances

David R. Coria, Neda Hejazi, Ian J. M. Crossfield +1

The elemental and isotopic abundances of volatiles like carbon, oxygen, and nitrogen may trace a planet's formation location relative to HO, CO, CO, NH, and N "snow…

astro-ph.EP2024★ 14 cited

Global weather map reveals persistent top-of-atmosphere features on the nearest brown dwarfs

Xueqing Chen, Beth A. Biller, Johanna M. Vos +10

Brown dwarfs and planetary-mass companions display rotationally modulated photometric variability, especially those near the L/T transition. This variability is commonly attributed…

astro-ph.EP2024★ 62 cited

A Benchmark JWST Near-Infrared Spectrum for the Exoplanet WASP-39b

A. L. Carter, E. M. May, N. Espinoza +77

Observing exoplanets through transmission spectroscopy supplies detailed information on their atmospheric composition, physics, and chemistry. Prior to JWST, these observations wer…

astro-ph.EP2024★ 96 cited

Sulphur dioxide in the mid-infrared transmission spectrum of WASP-39b

Diana Powell, Adina D. Feinstein, Elspeth K. H. Lee +70

The recent inference of sulphur dioxide (SO) in the atmosphere of the hot (1100 K), Saturn-mass exoplanet WASP-39b from near-infrared JWST observations suggests that phot…

astro-ph.EP2024★ 4 cited

A low-mass sub-Neptune planet transiting the bright active star HD 73344

S. Sulis, I. J. M. Crossfield, A. Santerne +33

Context. Planets with radii of between 2-4 RE closely orbiting solar-type stars are of significant importance for studying the transition from rocky to giant planets. Aims. Our goa…