A Principal Component Analysis-based method to analyse high-resolution spectroscopic data

Abstract

High-Resolution Spectroscopy (HRS) has been used to study the composition and dynamics of exoplanetary atmospheres. In particular, the spectrometer CRIRES installed on the ESO-VLT has been used to record high-resolution spectra in the Near-IR of gaseous exoplanets. Here we present a new automatic pipeline to analyze CRIRES data-sets. Said pipeline is based on a novel use of Principal Component Analysis (PCA) and Cross-Correlation Function (CCF). The exoplanetary atmosphere is modeled with the $\tau$-REx code using opacities at high temperature from the ExoMol project. In this work, we tested our analysis tools on the detection of CO and H${}_2$O in the atmospheres of the hot-Jupiters HD209458b and HD189733b. The results of our pipeline are in agreement with previous results in the literature and other techniques.

14 pages, 12 figures, 2 tables, published in ApJ

References in corpus (36)

• Detection of an Extrasolar Planet Atmosphere
• A continuum from clear to cloudy hot-Jupiter exoplanets without primordial water depletion
• On the Unique Solution of Planet and Star Parameters from an Extrasolar Planet Transit Light Curve
• The orbital motion, absolute mass, and high-altitude winds of exoplanet HD209458b
• The ExoMol database: molecular line lists for exoplanet and other hot atmospheres
• Correcting systematic effects in a large set of photometric lightcurves
• Improved parameters for extrasolar transiting planets
• ELODIE metallicity-biased search for transiting Hot Jupiters II. A very hot Jupiter transiting the bright K star HD189733
• Sodium Absorption From the Exoplanetary Atmosphere of HD189733b Detected in the Optical Transmission Spectrum
• ExoMol: molecular line lists for exoplanet and other atmospheres
• Detection of water absorption in the day side atmosphere of HD 189733 b using ground-based high-resolution spectroscopy at 3.2 microns
• The climate of HD 189733b from fourteen transits and eclipses measured by Spitzer
• A population study of gaseous exoplanets
• Observations of Mass Loss from the Transiting Exoplanet HD 209458b
• The Spectroscopic Orbit of the Planetary Companion Transiting HD209458
• Strong Water Absorption in the Dayside Emission Spectrum of the Planet HD 189733b
• Tau-REx I: A next generation retrieval code for exoplanetary atmospheres
• Water Vapour Absorption in the Clear Atmosphere of an exo-Neptune
• Using Stellar Limb-Darkening to Refine the Properties of HD 209458b
• A chemical model for the atmosphere of hot Jupiters
• Rotation and winds of exoplanet HD 189733 b measured with high-dispersion transmission spectroscopy
• Detection of carbon monoxide in the high-resolution day-side spectrum of the exoplanet HD 189733b
• Detection of an atmosphere around the super-Earth 55 Cancri e
• The Rossiter-McLaughlin effect of CoRoT-3b & HD189733b
• Carbon monoxide and water vapor in the atmosphere of the non-transiting exoplanet HD 179949 b
• Tau-REx II: Retrieval of emission spectra
• High-Resolution Spectroscopic Detection of TiO and Stratosphere in the Day-side of WASP-33b
• Detection of molecular absorption in the dayside of exoplanet 51 Pegasi b?
• Discovery of water at high spectral resolution in the atmosphere of 51 Peg b
• A new approach to analysing HST spatial scans: the transmission spectrum of HD 209458 b
• Investigations of approximate expressions for the transit duration
• Search for an exosphere in sodium and calcium in the transmission spectrum of exoplanet 55 Cancri e
• Evidence for the Direct Detection of the Thermal Spectrum of the Non-Transiting Hot Gas Giant HD 88133 b
• Telluric-line subtraction in high-accuracy velocimetry: a PCA-based approach
• Detection of Water Vapor in the Thermal Spectrum of the Non-Transiting Hot Jupiter upsilon Andromedae b
• Near-IR transmission spectrum of HAT-P-32 b using HST/WFC3

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• Five carbon- and nitrogen-bearing species in a hot giant planet's atmosphere
• Where is the Water? Jupiter-like C/H ratio but strong H${}_2$O depletion found on $\tau$ Boötis b using SPIRou
• Characterizing exoplanetary atmospheres at high resolution with SPIRou: Detection of water on HD 189733 b
• The GAPS Programme at TNG LV. Multiple molecular species in the atmosphere of HAT-P-11 b and review of the HAT-P-11 planetary system
• ExoReL${}^{\Re }$: A Bayesian Inverse Retrieval Framework For Exoplanetary Reflected Light Spectra
• The hot Neptune WASP-166 b with ESPRESSO III: A blue-shifted tentative water signal constrains the presence of clouds
• A formally motivated retrieval framework applied to the high resolution transmission spectrum of HD 189733 b
• On the Effect of Stellar Activity on Low-resolution Transit Spectroscopy and the Use of High Resolution as Mitigation
• SVEEEETIES: Singular vector expansion to estimate Earth-like exoplanet temperatures from infrared emission spectra