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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:
Christina Manzano-King, Gabriela Canalizo, Laura V. Sales
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Atrideb Chatterjee, Pratika Dayal, Tirthankar Roy Choudhury, Anne Hutter
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4 years ago
Title:
On the Emergence of Thousands of Absorption Lines in the Quasar
PG1411+442: A Clumpy High-Column Density Outflow from the Broad Emission-Line
Region?
(View PDF)
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Fred Hamann, Todd M. Tripp, David Rupke, Sylvain Veilleux
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James R. Beattie, Christoph Federrath, Ralf S. Klessen
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Allison Kirkpatrick, Chelsea Sharon, Erica Keller, Alexandra Pope
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4 years ago
Title:
The Analogous Structure of Accretion Flows in Supermassive and Stellar
Mass Black Holes: New Insights from Faded Changing-Look Quasars
(View PDF)
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John J. Ruan, Scott F. Anderson, Michael Eracleous, Paul J. Green, Daryl Haggard, Chelsea L. MacLeod, Jessie C. Runnoe, Malgosia A. Sobolewska
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Paul J. L. Charlton, John J. Ruan, Daryl Haggard, Scott F. Anderson, Michael Eracleous, Chelsea L. Macleod, Jessie C. Runnoe
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Dalya Baron, Brice Ménard
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