ESPRESSO high resolution transmission spectroscopy of WASP-76b

Abstract

Aims. We report on ESPRESSO high-resolution transmission spectroscopic observations of two primary transits of the highly-irradiated, ultra-hot Jupiter-size planet WASP-76b. We investigate the presence of several key atomic and molecular features of interest that may reveal the atmospheric properties of the planet. Methods. We extracted two transmission spectra of WASP-76b with R approx 140,000 using a procedure that allowed us to process the full ESPRESSO wavelength range (3800-7880 A) simultaneously. We observed that at a high signal-to-noise ratio, the continuum of ESPRESSO spectra shows wiggles that are likely caused by an interference pattern outside the spectrograph. To search for the planetary features, we visually analysed the extracted transmission spectra and cross-correlated the observations against theoretical spectra of different atomic and molecular species. Results. The following atomic features are detected: Li I, Na I, Mg I, Ca II, Mn I, K I, and Fe I. All are detected with a confidence level between 9.2 sigma (Na I) and 2.8 sigma (Mg I). We did not detect the following species: Ti I, Cr I, Ni I, TiO, VO, and ZrO. We impose the following 1 sigma upper limits on their detectability: 60, 77, 122, 6, 8, and 8 ppm, respectively. Conclusions. We report the detection of Li I on WASP-76b for the first time. In addition, we found the presence of Na I and Fe I as previously reported in the literature. We show that the procedure employed in this work can detect features down to the level of ~ 0.1 % in the transmission spectrum and ~ 10 ppm by means of a cross-correlation method. We discuss the presence of neutral and singly ionised features in the atmosphere of WASP-76b.

arXiv comment20 pages, 19 figures, accepted for publication in Astronomy and Astrophysics

References in corpus (55)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Gaia Data Release 2. Summary of the contents and survey properties
• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III
• The James Webb Space Telescope
• New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit
• Detection of an Extrasolar Planet Atmosphere
• Evolutionary models for very-low-mass stars and brown dwarfs with dusty atmospheres
• The PLATO 2.0 Mission
• Molecfit: A general tool for telluric absorption correction. I. Method and application to ESO instruments
• Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes
• The CORALIE survey for southern extra-solar planets VII. Two short-period Saturnian companions to HD108147 and HD168746
• ESPRESSO@VLT -- On-sky performance and first results
• Determining stellar atmospheric parameters and chemical abundances of FGK stars with iSpec
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• Molecfit: A general tool for telluric absorption correction II. Quantitative evaluation on ESO-VLT X-Shooter spectra
• Sodium Absorption From the Exoplanetary Atmosphere of HD189733b Detected in the Optical Transmission Spectrum
• From thermal dissociation to condensation in the atmospheres of ultra hot Jupiters: WASP-121b in context
• Spectrally resolved detection of sodium in the atmosphere of HD189733b with the HARPS spectrograph
• Nightside condensation of iron in an ultra-hot giant exoplanet
• SWEET-Cat: A catalogue of parameters for Stars With ExoplanETs I. New atmospheric parameters and masses for 48 stars with planets
• ExoMol Molecular linelists -- XXXIII. The spectrum of Titanium Oxide
• Ground-based detection of an extended helium atmosphere in the Saturn-mass exoplanet WASP-69b
• Ground-based detection of sodium in the transmission spectrum of exoplanet HD209458b
• Atomic iron and titanium in the atmosphere of the exoplanet KELT-9b
• Spectrally resolved helium absorption from the extended atmosphere of a warm Neptune-mass exoplanet
• A spectral survey of an ultra-hot Jupiter: Detection of metals in the transmission spectrum of KELT-9 b
• ExoMol line lists XVIII. The high temperature spectrum of VO
• ARES v2 - new features and improved performance
• Detection of Fe I in the atmosphere of the ultra-hot Jupiter WASP-121b, and a new likelihood-based approach for Doppler-resolved spectroscopy
• Simultaneous Detection of Water, Methane and Carbon Monoxide in the Atmosphere of Exoplanet HR8799b
• HELIOS: An Open-source, GPU-accelerated Radiative Transfer Code For Self-consistent Exoplanetary Atmospheres
• Atmospheric characterization of the ultra-hot Jupiter MASCARA-2b/KELT-20b
• Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) IV. A spectral inventory of atoms and molecules in the high-resolution transmission spectrum of WASP-121 b
• High-Resolution Spectroscopic Detection of TiO and Stratosphere in the Day-side of WASP-33b
• Self-luminous and irradiated exoplanetary atmospheres explored with HELIOS
• Atmospheric Rossiter-McLaughlin effect and transmission spectroscopy of WASP-121b with ESPRESSO
• High-resolution confirmation of an extended helium atmosphere around WASP-107b
• Atomic and Molecular Data for Optical Stellar Spectroscopy
• Three irradiated and bloated hot Jupiters: WASP-76b, WASP-82b & WASP-90b
• Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) - II. A broadened sodium feature on the ultra-hot giant WASP-76b
• 3D modeling of GJ1214b's atmosphere: vertical mixing driven by an anti-Hadley circulation
• Ionized calcium in the atmospheres of two ultra-hot exoplanets WASP-33b and KELT-9b
• He I $\lambda$ 10830 Å in the transmission spectrum of HD 209458 b
• The GTC exoplanet transit spectroscopy survey IX. Detection of Haze, Na, K, and Li in the super-Neptune WASP-127b
• Evidence for a Dayside Thermal Inversion and High Metallicity for the Hot Jupiter WASP-18b
• SWEET-Cat updated. New homogenous spectroscopic parameters
• Search for water vapor in the high-resolution transmission spectrum of HD189733b in the visible
• The atmosphere of HD 209458b seen with ESPRESSO. No detectable planetary absorptions at high resolution
• ARES I: WASP-76 b, A Tale of Two HST Spectra
• Is there NaI in the atmosphere of HD 209458b? Effect of the centre-to-limb variation and Rossiter-McLaughlin effect in transmission spectroscopy studies
• StePar: an automatic code to infer stellar atmospheric parameters
• HST/STIS transmission spectrum of the ultra-hot Jupiter WASP-76 b confirms the presence of sodium in its atmosphere
• HORuS transmission spectroscopy of 55 Cnc e

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• An ESPRESSO view of HD 189733 system. Broadband transmission spectrum, differential rotation, and system architecture
• Probing Na in giant exoplanets with ESPRESSO and 3D NLTE stellar spectra
• HORuS transmission spectroscopy and revised planetary parameters of KELT-7b
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• Characterization of exoplanetary atmospheres through a model-unbiased spectral survey methodology
• Resilience and implications of adiabatic CMB cooling
• A Time-Resolved High-Resolution Spectroscopic Analysis of Ionized Calcium and Dynamical Processes in the Ultra-Hot Jupiter HAT-P-70 b
• The GAPS programme at TNG LXVI. A homogeneous search for Na i and its possible variability in ten gas giant exoplanets
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• Atmospheric composition of WASP-85Ab with ESPRESSO/VLT observations
• The GAPS Programme at TNG. LXIX.The Dayside of WASP-76b revealed by GIANO-B, HARPS-N and ESPRESSO: Evidence for Three-Dimensional Atmospheric Effects
• Spitzer phase curve observations and circulation models of the inflated ultra-hot Jupiter WASP-76b
• Magnetic Drag and 3-D Effects in Theoretical High-Resolution Emission Spectra of Ultrahot Jupiters: the Case of WASP-76b
• First Results from WINERED: Detection of Emission Lines from Neutral Iron and a Combined Set of Trace Species on the Dayside of WASP-189 b
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