PEPSI Investigation, Retrieval, and Atlas of Numerous Giant Atmospheres (PIRANGA). III. Composition and winds in the atmosphere of TOI-1518 b
arXiv:2503.07723 · doi:10.1093/mnras/staf1648
Abstract
Ultra-hot Jupiters (UHJs) orbit close to their host stars and experience extreme conditions, making them important laboratories to explore atmospheric composition and dynamics. Transmission spectroscopy is a useful tool to reveal chemical species and their vertical and longitudinal distribution in the atmosphere. We use transmission spectra from the PEPSI spectrograph on the Large Binocular Telescope to search for species and measure their time-resolved wind velocities in the atmosphere of TOI-1518 b. We detect Fe I at 7.8 and Fe II at 8.9, and tentatively detect Cr I at 4.4 and Ni I at 4.0. The time-resolved wind velocities of Fe I show a velocity pattern that is consistent with the velocity pattern of Fe II. TOI-1518 b joins a small sample of UHJs for which time-resolved wind velocities have been measured.
arXiv comment8 pages, 4 figures
References in corpus (42)
- emcee: The MCMC Hammer
- The orbital motion, absolute mass, and high-altitude winds of exoplanet HD209458b
- A Unified Theory for the Atmospheres of the Hot and Very Hot Jupiters: Two Classes of Irradiated Atmospheres
- Molecfit: A general tool for telluric absorption correction. I. Method and application to ESO instruments
- Atmospheric circulation of hot Jupiters: Coupled radiative-dynamical general circulation model simulations of HD 189733b and HD 209458b
- petitRADTRANS: a Python radiative transfer package for exoplanet characterization and retrieval
- On the radiative equilibrium of irradiated planetary atmospheres
- Correcting systematic effects in a large set of photometric lightcurves
- Molecfit: A general tool for telluric absorption correction II. Quantitative evaluation on ESO-VLT X-Shooter spectra
- A Possible Bifurcation in Atmospheres of Strongly Irradiated Stars and Planets
- The signature of orbital motion from the dayside of the planet tau Bootis b
- Equatorial superrotation on tidally locked exoplanets
- Prospects for the Characterization and Confirmation of Transiting Exoplanets via the Rossiter-McLaughlin Effect
- Nightside condensation of iron in an ultra-hot giant exoplanet
- Line-profile tomography of exoplanet transits -- II. A gas-giant planet transiting a rapidly-rotating A5 star
- An ultrahot gas-giant exoplanet with a stratosphere
- A giant planet undergoing extreme ultraviolet irradiation by its hot massive-star host
- Extremely Irradiated Hot Jupiters: Non-Oxide Inversions, H- Opacity, and Thermal Dissociation of Molecules
- Dynamics and Disequilibrium Carbon Chemistry in Hot Jupiter Atmospheres, With Application to HD 209458b
- Increased Heat Transport in Ultra-Hot Jupiter Atmospheres Through H Dissociation/Recombination
- PEPSI: The high-resolution echelle spectrograph and polarimeter for the Large Binocular Telescope
- FastChem: A computer program for efficient complex chemical equilibrium calculations in the neutral/ionized gas phase with applications to stellar and planetary atmospheres
- Atmospheric Rossiter-McLaughlin effect and transmission spectroscopy of WASP-121b with ESPRESSO
- Three irradiated and bloated hot Jupiters: WASP-76b, WASP-82b & WASP-90b
- Atmospheric Dynamics of Hot Giant Planets and Brown Dwarfs
- Titanium oxide and chemical inhomogeneity in the atmosphere of the exoplanet WASP-189b
- KELT-20b: A giant planet with a period of P~ 3.5 days transiting the V~ 7.6 early A star HD 185603
- Decomposing the Iron Cross-Correlation Signal of the Ultra-Hot Jupiter WASP-76b in Transmission using 3D Monte-Carlo Radiative Transfer
- A Misaligned Prograde Orbit for Kepler-13 Ab via Doppler Tomography
- New Avenues for Thermal Inversions in hot Jupiters
- PEPSI deep spectra. I. The Sun-as-a-star
- Searching for Thermal Inversion Agents in the Transmission Spectrum of MASCARA-2b/KELT-20b: Detection of Neutral Iron and Ionised Calcium HK Lines
- Measurement of the Nodal Precession of WASP-33 b via Doppler Tomography
- Spin-orbit resonance, transit duration variation and possible secular perturbations in KOI-13
- Into the Storm: Diving into the winds of the ultra hot Jupiter WASP-76 b with HARPS and ESPRESSO
- Exoplanet Atmospheres at High Spectral Resolution
- Spin-Orbit Misalignments of Three Jovian Planets via Doppler Tomography
- The PEPSI Exoplanet Transit Survey (PETS). II. A Deep Search for Thermal Inversion Agents in KELT-20 b/MASCARA-2 b with Emission and Transmission Spectroscopy
- Variable and super-sonic winds in the atmosphere of an ultra-hot giant planet
- Transmission spectroscopy of MASCARA-1b with ESPRESSO: Challenges of overlapping orbital and Doppler tracks
- Nodal Precession and Tidal Evolution of Two Hot-Jupiters: WASP-33 b and KELT-9 b
- PEPSI Investigation, Retrieval, and Atlas of Numerous Giant Atmospheres (PIRANGA). I. The Ubiquity of Fe I Emission and Inversions in Ultra Hot Jupiter Atmospheres