TOI-6324 b: An Earth-mass Ultra-short-period Planet Transiting a Nearby M Dwarf

TOI-6324 b: An Earth-mass Ultra-short-period Planet Transiting a Nearby M Dwarf

We report the confirmation of TOI-6324 b, an Earth-sized (1.059 ± 0.041 R _⊕ ) ultra-short-period (USP) planet orbiting a nearby (∼20 pc) M dwarf. Using the newly commissioned Keck Planet Finder spectrograph, we have measured the mass of TOI-6324 b 1.17 ± 0.22 M _⊕ . Because of its extremely short o...

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Main Authors:	Rena A. Lee, Fei Dai, Andrew W. Howard, Samuel Halverson, Jonathan Gomez Barrientos, Michael Greklek-McKeon, Heather A. Knutson, Benjamin J. Fulton, Guđmundur Stefánsson, Jack Lubin, Howard Isaacson, Casey L. Brinkman, Nicholas Saunders, Daniel Hey, Daniel Huber, Lauren M. Weiss, Leslie A. Rogers, Diana Valencia, Mykhaylo Plotnykov, Kimberly Paragas, Renyu Hu, Te Han, Erik A. Petigura, Ryan Rubenzahl, David R. Ciardi, Aaron Householder, Gregory J. Gilbert, J. M. Joel Ong, Jingwen Zhang, Jacob Luhn, Luke Handley, Corey Beard, Steven Giacalone, Rae Holcomb, Judah Van Zandt, Ashley D. Baker, Max Brodheim, Matt Brown, David Charbonneau, Karen A. Collins, Ian J. M. Crossfield, William Deich, Xavier Dumusque, Steven R. Gibson, Emily Gilbert, Grant M. Hill, Bradford Holden, Jon M. Jenkins, Stephen Kaye, Russ R. Laher, Kyle Lanclos, W. Garett Levine, Joel Payne, Alex S. Polanski, John O’Meara, George R. Ricker, Kodi Rider, Paul Robertson, Arpita Roy, Joshua E. Schlieder, Christian Schwab, Sara Seager, Abby P. Shaum, Martin M. Sirk, Stephanie Striegel, Johanna Teske, John Valliant, Roland Vanderspek, Gautam Vasisht, Josh Walawender, Sharon Xuesong Wang, Joshua N. Winn, Edward Wishnow, Sherry Yeh
Format:	Article
Language:	English
Published:	IOP Publishing 2025-01-01
Series:	The Astrophysical Journal Letters
Subjects:	Exoplanet structure Exoplanets Radial velocity Exoplanet astronomy
Online Access:	https://doi.org/10.3847/2041-8213/adadd7
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