PEPSI investigation, retrieval, and atlas of numerous giant atmospheres (PIRANGA) – III. Composition and winds in the atmosphere of TOI-1518 b

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 (Potsdam Echelle Polarimetric and Spectroscopic Instrument) 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$\sigma$ and Fe ii at 8.9$\sigma$, and tentatively detect Cr i at 4.4$\sigma$ and Ni i at 4.0$\sigma$. 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.

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Publication Details

Journal
Monthly Notices of the Royal Astronomical Society
Published
2025-09-27
DOI
https://doi.org/10.1093/mnras/staf1648
Citations
1
Primary Topic
Atmospheric Ozone and Climate
Type
article
Field-Weighted Citation Impact
1.30

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article

PEPSI investigation, retrieval, and atlas of numerous giant atmospheres (PIRANGA) – III. Composition and winds in the atmosphere of TOI-1518 b

Anusha Pai Asnodkar, I. Ilyin, C. Basinger, Marshall C. Johnson et al.
1 citations
Monthly Notices of the Royal Astronomical Society
Atmospheric Ozone and Climate
1.30
article

PEPSI investigation, retrieval, and atlas of numerous giant atmospheres (PIRANGA) – III. Composition and winds in the atmosphere of TOI-1518 b

Anusha Pai Asnodkar, I. Ilyin, C. Basinger, Marshall C. Johnson, K. G. Strassmeier, Alison Duck, Ji Wang, Sydney Petz, Calder Lenhart
article en
1 citations

Abstract

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 (Potsdam Echelle Polarimetric and Spectroscopic Instrument) 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$\sigma$ and Fe ii at 8.9$\sigma$, and tentatively detect Cr i at 4.4$\sigma$ and Ni i at 4.0$\sigma$. 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.

Monthly Notices of the Royal Astronomical SocietyVol. 543(4)
University of Potsdam (DE), Leibniz Institute for Astrophysics Potsdam (DE), The Ohio State University (US)
National Aeronautics and Space Administration, Ohio State University, California Institute of Technology, University of Minnesota, University of Notre Dame, Arizona Board of Regents, Nuclear Safety and Security Commission, Istituto Nazionale di Astrofisica, Leibniz-Institut für Astrophysik Potsdam, Leibniz-Gemeinschaft
Openalex Percentile: Top 18%
Atmospheric Ozone and Climate
1.30
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