Výsledky vyhledávání - "Exoplanet surface composition"

Akademický článek

Lava Worlds Surface Measurements at High Temperatures

Autor: Marc-Antoine Fortin, Esteban Gazel, Daniel B. Williams, James O. Thompson, Lisa Kaltenegger, Michael S. Ramsey

Publikováno v: The Astrophysical Journal Letters, Vol 974, Iss 1, p L7 (2024)

First measurements of the emission of lava worlds with the James Webb Space Telescope (JWST) probe the conditions on worlds so hot that their surfaces are likely molten or partially molten. These observations provide a unique opportunity to explore r

Externí odkaz: https://doaj.org/article/1a27f8149f314ce78dc640b7fd448bbf

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Akademický článek

JWST Thermal Emission of the Terrestrial Exoplanet GJ 1132b

Autor: Qiao Xue, Jacob L. Bean, Michael Zhang, Alexandra Mahajan, Jegug Ih, Jason D. Eastman, Jonathan Lunine, Megan Weiner Mansfield, Brandon Park Coy, Eliza M.-R. Kempton, Daniel Koll, Edwin Kite

Publikováno v: The Astrophysical Journal Letters, Vol 973, Iss 1, p L8 (2024)

We present thermal emission measurements of GJ 1132b spanning 5–12 μ m obtained with the Mid-Infrared Instrument Low-Resolution Spectrometer on the James Webb Space Telescope. GJ 1132b is an M dwarf rocky planet with T _eq = 584 K and an orbital p

Externí odkaz: https://doaj.org/article/2540d1f40b9f4a4f84119e0c1eaaa58c

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Akademický článek

GJ 367b Is a Dark, Hot, Airless Sub-Earth

Autor: Michael Zhang, Renyu Hu, Julie Inglis, Fei Dai, Jacob L. Bean, Heather A. Knutson, Kristine Lam, Elisa Goffo, Davide Gandolfi

Publikováno v: The Astrophysical Journal Letters, Vol 961, Iss 2, p L44 (2024)

We present the mid-infrared (5–12 μ m) phase curve of GJ 367b observed by the Mid-Infrared Instrument on the James Webb Space Telescope (JWST). GJ 367b is a hot ( T _eq = 1370 K), extremely dense (10.2 ± 1.3 g cm ^−3 ) sub-Earth orbiting an M d

Externí odkaz: https://doaj.org/article/11664dd2d56d488cbdedfe5fc670d58c

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Akademický článek

TOI-561 b: A Low-density Ultra-short-period 'Rocky' Planet around a Metal-poor Star

Publikováno v: The Astronomical Journal, Vol 165, Iss 3, p 88 (2023)

TOI-561 is a galactic thick-disk star hosting an ultra-short-period (0.45-day-orbit) planet with a radius of 1.37 R _⊕ , making it one of the most metal-poor ([Fe/H] = −0.41) and oldest (≈10 Gyr) sites where an Earth-sized planet has been found

Externí odkaz: https://doaj.org/article/ca2fbfcab8ba4294a70d87f9959b2c79

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Akademický článek

In Search of the Edge: A Bayesian Exploration of the Detectability of Red Edges in Exoplanet Reflection Spectra

Autor: Jonathan Gomez Barrientos, Ryan J. MacDonald, Nikole K. Lewis, Lisa Kaltenegger

Publikováno v: The Astrophysical Journal, Vol 946, Iss 2, p 96 (2023)

Reflection spectroscopy holds great promise for characterizing the atmospheres and surfaces of potentially habitable terrestrial exoplanets. The surface of the modern Earth exhibits a sharp albedo change near 750 nm caused by vegetation—the red edg

Externí odkaz: https://doaj.org/article/7d2696258fb440368747818f2a333615

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Lithologic Controls on Silicate Weathering Regimes of Temperate Planets

Autor: Pierre Auclair-Desrotour, Daniel Kitzmann, Caroline Dorn, Dan J. Bower, Kevin Heng, Russell Deitrick, Meng Tian, Klaus Mezger, Kaustubh Hakim

Publikováno v: The Planetary Science Journal
The Planetary Science Journal, IOP Science, 2021, 2 (2), pp.49. ⟨10.3847/PSJ/abe1b8⟩
The Planetary Science Journal, 2021, 2 (2), pp.49. ⟨10.3847/PSJ/abe1b8⟩
Hakim, Kaustubh; Bower, Daniel J.; Tian, Meng; Deitrick, Russell; Auclair-Desrotour, Pierre; Kitzmann, Daniel; Dorn, Caroline; Mezger, Klaus; Heng, Kevin (2021). Lithologic Controls on Silicate Weathering Regimes of Temperate Planets. The planetary science journal, 2(2), p. 49. IOP Publishing 10.3847/PSJ/abe1b8

Weathering of silicate rocks at a planetary surface can draw down CO$_2$ from the atmosphere for eventual burial and long-term storage in the planetary interior. This process is thought to provide an essential negative feedback to the carbonate-silic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::165aaf4506af14ece3fe7a630941bb1c
https://hal.archives-ouvertes.fr/hal-03470369

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