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Maximilian Häberle, Nadine Neumayer, Anil Seth, Andrea Bellini, Mattia Libralato, Holger Baumgardt, Matthew Whitaker, Antoine Dumont et al.
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Charles L. Steinhardt
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1
(created 2024-05-17T17:01:23Z)
Detection of an Earth-sized exoplanet orbiting the nearby ultracool dwarf star SPECULOOS-3
https://www.nature.com/articles/s41550-024-02271-2
Located at the bottom of the main sequence, ultracool dwarf stars are widespread in the solar neighbourhood. Nevertheless, their extremely low luminosity has left their planetary population largely unexplored, and only one of them, TRAPPIST-1, has so far been found to host a transiting planetary system. In this context, we present the SPECULOOS project’s detection of an Earth-sized planet in a 17 h orbit around an ultracool dwarf of M6.5 spectral type located 16.8 pc away. The planet’s high irradiation (16 times that of Earth) combined with the infrared luminosity and Jupiter-like size of its host star make it one of the most promising rocky exoplanet targets for detailed emission spectroscopy characterization with JWST. Indeed, our sensitivity study shows that just ten secondary eclipse observations with the Mid-InfraRed Instrument/Low-Resolution Spectrometer on board JWST should provide strong constraints on its atmospheric composition and/or surface mineralogy.
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Votes: 1
4 weeks ago Author:
Julian B. Muñoz, Jordan Mirocha, John Chisholm, Steven R. Furlanetto, Charlotte Mason
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Votes: 1
4 weeks ago
Title:
CRIRES$^+$ transmission spectroscopy of WASP-127b. Detection of the
resolved signatures of a supersonic equatorial jet and cool poles in a hot
planet
(View PDF)
Author:
L. Nortmann, F. Lesjak, F. Yan, D. Cont, S. Czesla, A. Lavail, A. D. Rains, E. Nagel et al.
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4 weeks ago
Title:
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Terrestrial-Mass Candidate
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Author:
Michelle Kunimoto, William DeRocco, Nolan Smyth, Steve Bryson
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Votes: 2
4 weeks ago Author:
[Gaia Collaboration], P. Panuzzo, T. Mazeh, F. Arenou, B. Holl, E. Caffau, A. Jorissen, C. Babusiaux et al.
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Votes: 1
4 weeks ago Author:
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Votes: 1
1 month ago
Title:
Aperture photometry on asteroid trails: detection of the fastest
rotating near-Earth object
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Author:
Maxime Devogèle, Luca Buzzi, Marco Micheli, Juan Luis Cano, Luca Conversi, Emmanuel Jehin, Marin Ferrais, Francisco Ocaña et al.
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Votes: 2
1 month ago
Title:
DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon
Acoustic Oscillations
(View PDF)
Author:
DESI Collaboration, A. G. Adame, J. Aguilar, S. Ahlen, S. Alam, D. M. Alexander, M. Alvarez, O. Alves et al.
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Votes: 1
1 month ago
Title:
Mid-Infrared Spectrum of the Disk around the Forming Companion GQ Lup B
Revealed by JWST/MIRI
(View PDF)
Author:
Gabriele Cugno, Polychronis Patapis, Andrea Banzatti, Michael Meyer, Felix A. Dannert, Tomas Stolker, Ryan J. MacDonald, Klaus M. Pontoppidan
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