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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
2 months ago Author:
Nolan Habel, Conor Nally, Laura Lenkic, Margaret Meixner, Guido De Marchi, Patrick J. Kavanagh, Katja Fahrion, Omnarayani Nayak et al.
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Votes: 1
2 months ago
Title:
Asteroid (101955) Bennu in the Laboratory: Properties of the Sample
Collected by OSIRIS-REx
(View PDF)
Author:
Dante S. Lauretta, Harold C. Connolly,, Joseph E. Aebersold, Conel M. O. D. Alexander, Ronald-L. Ballouz, Jessica J. Barnes, Helena C. Bates, Carina A. Bennett et al.
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Votes: 1
2 months ago
Title:
Evolutionary Period Changes For 52 Cataclysmic Variables, and the
Failure For the Most Fundamental Prediction of the Magnetic Braking Model
(View PDF)
Author:
Bradley E. Schaefer
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Votes: 1
2 months ago Author:
Charles L. Steinhardt
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Votes: 1
2 months ago
Title:
Adapting AREPO-RT for Exascale Computing: GPU Acceleration and Efficient
Communication
(View PDF)
Author:
Oliver Zier, Rahul Kannan, Aaron Smith, Mark Vogelsberger, Erkin Verbeek
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Votes: 1
2 months ago Author:
Kareem El-Badry, Hans-Walter Rix, David W. Latham, Sahar Shahaf, Tsevi Mazeh, Allyson Bieryla, Lars A. Buchhave, René Andrae et al.
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Votes: 1
2 months ago
Title:
Confronting sparse Gaia DR3 photometry with TESS for a sample of about
60,000 hot massive non-radial pulsators
(View PDF)
Author:
Daniel Hey, Conny Aerts
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Votes: 1
2 months ago
Title:
A compilation of solar atlases (from Delbouille, Kurucz, Gandorfer,
Stenflo) at disk centre and at limb from $λ$ 3000 Å to $λ$
8800 Å
(View PDF)
Author:
Jean-Marie Malherbe
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3 months ago
Title: Discovery of a dormant 33 solar-mass black hole in pre-release Gaia astrometry
Link: https://www.aanda.org/component/article?access=doi&doi=10.1051/0004-6361/202449763
Description:
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Votes: 2
3 months ago Author:
E. Balbinot, E. Dodd, T. Matsuno, C. Lardo, A. Helmi, P. Panuzzo, T. Mazeh, B. Holl et al.
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