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Record W2714491955

Near-infrared Characterization of the Atmospheres of Alien Worlds

2011· dissertation· en· W2714491955 on OpenAlex
Bryce Croll

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueTSpace (University of Toronto) · 2011
Typedissertation
Languageen
FieldPhysics and Astronomy
TopicSpace Science and Extraterrestrial Life
Canadian institutionsnot available
Fundersnot available
KeywordsAlienCharacterization (materials science)InfraredMaterials scienceNanotechnologyPhysicsAstronomyPolitical scienceLaw
DOInot available

Abstract

fetched live from OpenAlex

In this thesis I present near-infrared detections of the thermal emission of a number of hot Jupiters and likely
\ntransit depth differences from different wavelength observations of a super-Earth. I have pioneered ``Staring Mode''
\nusing the Wide-field Infrared Camera on the Canada-France-Hawaii Telescope to achieve the most accurate photometry to-date
\nin the near-infrared from the ground. I also discuss avenues that should allow one to achieve even more accurate photometry
\nin the future. Using WIRCam on CFHT my collaborators and I have detected the thermal emission of the following hot Jupiters:
\nTrES-2b and TrES-3b in Ks-band, WASP-12b in the J, H \\& Ks-bands, and WASP-3b in the Ks-band on two occasions.
\nNear-infrared detections of the thermal emission of hot Jupiters are important, because the majority of these
\nplanets' blackbodies peak in this wavelength range; near-infrared detections allow us to obtain the most
\nmodel-independent constraints on these planets' atmospheric characteristics, their temperature-pressure profiles
\nwith depth and an estimate of their bolometric luminosities. With these detections we are able to answer such questions
\nas: how efficiently these planets redistribute heat to their nightsides, if they're being inflated by tidal heating, whether
\nthere's any evidence that one of these planets is precessing, and whether another experiences extreme weather and violent storms? 
\n
\nMy collaborators and I have also observed several transits of the super-Earth GJ 1214b. We find a deeper transit depth in one of our
\nnear-infrared bands than the other. This is likely indicative of a spectral absorption feature. For the differences
\nin the transit depth to be as large as we observed, the atmosphere of GJ 1214b must have a large scale height,
\nlow mean molecular weight and thus have a hydrogen/helium dominated atmosphere. Given that other researchers have not
\nfound similar transit depth differences, we also discuss the most likely atmospheric makeup for this planet that
\nresults from a combination of all the observations to date.
\n
\nLastly, by searching for long-term linear trends in radial velocity data, I constrain the theory that most
\nhot Jupiters migrated to their present positions via the Kozai mechanism with tidal heating.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.768
Threshold uncertainty score0.991

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0100.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.011
GPT teacher head0.224
Teacher spread0.213 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it