A resonant sextuplet of sub-Neptunes transiting the bright star HD 110067
Planets with radii between that of the Earth and Neptune (hereafter referred to as 'sub-
Neptunes') are found in close-in orbits around more than half of all Sun-like stars,. However …
Neptunes') are found in close-in orbits around more than half of all Sun-like stars,. However …
Detection of atmospheric escape from four young mini-Neptunes
We use Keck/NIRSPEC to survey a sample of of young (< 1 Gyr), short-period mini-
Neptunes orbiting nearby K dwarfs to measure their mass loss via the metastable helium …
Neptunes orbiting nearby K dwarfs to measure their mass loss via the metastable helium …
The MOPYS project: A survey of 70 planets in search of extended He I and H atmospheres-No evidence of enhanced evaporation in young planets
J Orell-Miquel, F Murgas, E Pallé, M Mallorquín… - Astronomy & …, 2024 - aanda.org
During the first billion years of their life, exoplanet atmospheres are modified by different
atmospheric escape phenomena that can strongly affect the shape and morphology of the …
atmospheric escape phenomena that can strongly affect the shape and morphology of the …
TESS and CHEOPS discover two warm sub-Neptunes transiting the bright K-dwarf HD 15906
We report the discovery of two warm sub-Neptunes transiting the bright (G= 9.5 mag) K-
dwarf HD 15906 (TOI 461, TIC 4646810). This star was observed by the Transiting …
dwarf HD 15906 (TOI 461, TIC 4646810). This star was observed by the Transiting …
Revisiting K2-233 spectroscopic time-series with multidimensional Gaussian processes
Detecting planetary signatures in radial velocity time-series of young stars is challenging
due to their inherently strong stellar activity. However, it is possible to learn information …
due to their inherently strong stellar activity. However, it is possible to learn information …
Non-detection of He I in the Atmosphere of GJ 1214b with Keck/NIRSPEC, at a Time of Minimal Telluric Contamination
JJ Spake, A Oklopčić, LA Hillenbrand… - The Astrophysical …, 2022 - iopscience.iop.org
Observations of helium in exoplanet atmospheres may reveal the presence of large gaseous
envelopes and indicate ongoing atmospheric escape. Orell-Miquel et al.(2022) used …
envelopes and indicate ongoing atmospheric escape. Orell-Miquel et al.(2022) used …
TOI-1801 b: A temperate mini-Neptune around a young M0. 5 dwarf
M Mallorquín, E Goffo, E Pallé, N Lodieu… - Astronomy & …, 2023 - aanda.org
We report the discovery, mass, and radius determination of TOI-1801 b, a temperate mini-
Neptune around a young M dwarf. TOI-1801 b was observed in TESS sectors 22 and 49 …
Neptune around a young M dwarf. TOI-1801 b was observed in TESS sectors 22 and 49 …
Possible origin of the non-detection of metastable He I in the upper atmosphere of the hot Jupiter WASP-80b
Aims. We aim to constrain the origin of the non-detection of the metastable He I triplet at≈
10 830 Å obtained for the hot Jupiter WASP-80b. Methods. We measure the X-ray flux of …
10 830 Å obtained for the hot Jupiter WASP-80b. Methods. We measure the X-ray flux of …
The GAPS Programme at TNG-XLII. A characterisation study of the multi-planet system around the 400 Myr-old star HD 63433 (TOI-1726)
Context. The GAPS collaboration is carrying out a spectroscopic and photometric follow-up
of a sample of young stars with planets (age≲ 600 Myr) to characterise planetary systems at …
of a sample of young stars with planets (age≲ 600 Myr) to characterise planetary systems at …
Nondetection of Helium in the Hot Jupiter WASP-48b
KA Bennett, S Redfield, A Oklopčić… - The Astronomical …, 2023 - iopscience.iop.org
Hot Jupiters orbiting extremely close to their host star may experience atmospheric escape
due to the large amounts of high-energy radiation they receive. Understanding the …
due to the large amounts of high-energy radiation they receive. Understanding the …