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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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4 years ago Author:
Yue Shen, Scott Anderson, Edo Berger, W. N. Brandt, Gisella De Rosa, Xiaohui Fan, Laura Ferrarese, Suvi Gezari et al.
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4 years ago Author:
Xiaohui Fan, Aaron Barth, Eduardo Banados, Gisella De Rosa, Roberto Decarli, Anna-Christina Eilers, Emanuele Paolo Farina, Jenny Greene et al.
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5 years ago Author:
Rory Barnes, Rodrigo Luger, Russell Deitrick, Peter Driscoll, Thomas R. Quinn, David P. Fleming, Hayden Smotherman, Diego V. McDonald et al.
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Nikita Kamraj, Andrew Fabian, Anne Lohfink, Mislav Baloković, Claudio Ricci, Kristin Madsen
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Sara Frederick, Suvi Gezari, Matthew J. Graham, S. Bradley Cenko, Sjoert van Velzen, Daniel Stern, Nadejda Blagorodnova, Shrinivas R. Kulkarni et al.
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5 years ago
Title:
SDSS-IV eBOSS Spectroscopy of X-ray and WISE AGN in Stripe 82X: Overview
of the Demographics of X-ray and Mid-Infrared Selected Active Galactic Nuclei
(View PDF)
Author:
Stephanie M. LaMassa, Antonis Georgakakis, M. Vivek, Mara Salvato, Tonima Tasnim Ananna, C. Meg Urry, Chelsea MacLeod, Nicholas Ross
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5 years ago Author:
Ryan Rickards Vaught, Kate H. R. Rubin, Fabrizio Arrigoni Battaia, J. Xavier Prochaska, Joseph F. Hennawi
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5 years ago
Title:
SDSS-IV/SPIDERS: A Catalogue of X-Ray Selected AGN Properties; Spectral
Properties and Black Hole Mass Estimates for SPIDERS SDSS DR14 Type 1 AGN
(View PDF)
Author:
Damien Coffey, Mara Salvato, Andrea Merloni, Thomas Boller, Kirpal Nandra, Tom Dwelly, Johan Comparat, Andreas Schulze et al.
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5 years ago Author:
D. Huppenkothen, B. McFee, L. Norén
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