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Charles L. Steinhardt
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Yanjun Guo, Luqian Wang, Chao Liu, You Wu, ZhanWen Han, XueFei Chen
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Jakob Stegmann, Alejandro Vigna-Gómez, Antti Rantala, Tom Wagg, Lorenz Zwick, Mathieu Renzo, Lieke A. C. van Son, Selma E. de Mink et al.
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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
1 month ago
Title:
Imaging of I Zw 18 by JWST: I. Strategy and First Results of Dusty
Stellar Populations
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Author:
Alec S. Hirschauer, Nicolas Crouzet, Nolan Habel, Laura Lenkić, Conor Nally, Olivia C. Jones, Giacomo Bortolini, Martha L. Boyer et al.
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Votes: 1
1 month ago
Title:
The Asteroseismic Imprints of Mass Transfer: A Case Study of a Binary
Mass Gainer in the SPB Instability Strip
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Author:
Tom Wagg, Cole Johnston, Earl P. Bellinger, Mathieu Renzo, Richard Townsend, Selma E. de Mink
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Votes: 1
1 month ago Author:
Matteo Califano, Rocco D'Agostino, Daniele Vernieri
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Votes: 1
1 month ago
Title:
NELIOTA: New results and updated statistics after 6.5 years of lunar
impact flashes monitoring
(View PDF)
Author:
Alexios Liakos, Alceste Z. Bonanos, Emmanouil M. Xilouris, Detlef Koschny, Ioannis Bellas-Velidis, Panagiotis Boumis, Athanassios Maroussis, Richard Moissl
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Votes: 1
1 month ago Author:
[The Event Horizon Telescope Collaboration]
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2 months ago Author:
Ignas Juodžbalis, Roberto Maiolino, William M. Baker, Sandro Tacchella, Jan Scholtz, Francesco D'Eugenio, Raffaella Schneider, Alessandro Trinca et al.
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Votes: 1
2 months ago
Title:
The Second Discovery from the COol Companions ON Ultrawide orbiTS
(COCONUTS) Program: A Cold Wide-Orbit Exoplanet around a Young Field M Dwarf
at 10.9 pc
(View PDF)
Author:
Zhoujian Zhang, Michael C. Liu, Zachary R Claytor, William M. J. Best, Trent J. Dupuy, Robert J. Siverd
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Votes: 1
2 months ago
Title:
89 New Ultracool Dwarf Co-Moving Companions Identified With The Backyard
Worlds: Planet 9 Citizen Science Project
(View PDF)
Author:
Austin Rothermich, Jacqueline K. Faherty, Daniella Bardalez-Gagliuffi, Adam C. Schneider, J. Davy Kirkpatrick, Aaron M. Meisner, Adam J. Burgasser, Marc Kuchner et al.
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Votes: 1
2 months ago
Title:
Tip of the iceberg: overmassive black holes at 4<z<7 found by JWST are
not inconsistent with the local $\mathcal{M}_{\rm BH}$-$\mathcal{M}_\star$
relation
(View PDF)
Author:
Junyao Li, John D. Silverman, Yue Shen, Marta Volonteri, Knud Jahnke, Ming-Yang Zhuang, Matthew T. Scoggins, Xuheng Ding et al.
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Votes: 1
2 months ago Author:
Ziyong Wu, Yu Luo, Wei Wang, Xi Kang, Renyue Cen
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