REVIEW 3 cited by
Confirmation of WASP-107b's extended Helium atmosphere with Keck II/NIRSPEC
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
abstract
We present the detection of helium in the extended atmosphere of the sub-Saturn WASP-107b using high resolution ($R \approx 25000$) near-infrared spectra from Keck II/NIRSPEC. We find peak excess absorption of $7.26 \pm 0.24\%$ (30$\sigma$) centered on the HeI triplet at 10833A. The amplitude and shape of the helium absorption profile is in excellent agreement with previous observations of escaping helium from this planet made by CARMENES and HST. This suggests there is no significant temporal variation in the signature of escaping helium from the planet over a two year baseline. This result demonstrates Keck II/NIRSPEC's ability to detect atmospheric escape in exoplanets, making it a useful instrument to further our understanding of the evaporation of exoplanetary atmospheres via ground-based observations of HeI.
Forward citations
Cited by 3 Pith papers
-
Continuous helium absorption from the leading and trailing tails of WASP-107b
Continuous JWST observations of WASP-107b reveal metastable helium absorption beginning 1.5 hours before ingress, evidence of an extended ellipsoidal thermosphere, with spot-corrected water abundance log10 H2O = -2.5 ± 0.6.
-
A Self-Consistent 3D Hydrodynamic Model for Helium Transit Signatures in Evaporating Hot Jupiters
A 3D hydrodynamic model with self-consistent hydrogen-helium chemistry shows stellar winds compress escaping hot-Jupiter atmospheres and suppress the 1083 nm helium triplet signal, while a young star's strong XUV flux...
-
Escaping Helium and a Highly Muted Spectrum Suggest a Metal-Enriched Atmosphere on Sub-Neptune GJ3090b from JWST Transit Spectroscopy
JWST transit spectroscopy of the sub-Neptune GJ 3090 b detects a weak helium signal and a muted infrared spectrum, indicating a metal-enriched atmosphere with >100x solar metallicity.
Discussion (0). Continue with ORCID to comment.