Signatures of Core-envelope Rotational Misalignment in the Mixed-mode Asteroseismology of Kepler-56 by J. M. Joel Ong

“…Upon applying the revised asteroseismic observational methodology that results from this theoretical discussion to revisit Kepler-56—a red giant with a misaligned planetary system—I find that its core and envelope rotate around different rotational axes. …”
Get full text

Spin-down of Solar-mass Protostars in Magnetospheric Accretion Paradigm by Shinsuke Takasao, Masanobu Kunitomo, Takeru K. Suzuki, Kazunari Iwasaki, Kengo Tomida

“…Stellar spin is one of the fundamental quantities that characterize a star itself and its planetary system. Nevertheless, stellar spin-down mechanisms in protostellar and pre-main-sequence stellar phases have been a long-standing problem in star formation theory. …”
Get full text

Doppler cross-correlation spectroscopy as a path to the detection of Earth-like planets by Mayor, Michel

“…In the middle of the 20th century, a paradigm shift appeared concerning the expected frequency of planetary systems in the galaxy ...a shift induced by the observation of the rotational velocities of low main sequence stars (Struve 1952)!…”
Get full text

Gaia astrometry and exoplanetary science: DR2, (E)DR3, and beyond by Sozzetti, Alessandro

“…I review the recent impact of Gaia astrometry in the exoplanet field, both in terms of characterization of the orbits and masses of planetary systems and the properties of their host stars. …”
Get full text

The Deuterium Isotopic Ratio of Water Released From the Martian Caps as Measured With TGO/NOMAD by Geronimo L. Villanueva, Giuliano Liuzzi, Shohei Aoki, Shane W. Stone, Adrian Brines, Ian R. Thomas, Miguel Angel Lopez‐Valverde, Loic Trompet, Justin Erwin, Frank Daerden, Bojan Ristic, Michael D. Smith, Michael J. Mumma, Sara Faggi, Vincent Kofman, Séverine Robert, Lori Neary, Manish Patel, Giancarlo Bellucci, Jose Juan Lopez‐Moreno, Ann Carine Vandaele

Get full text

Exoplanet science with SPIRou: near-infrared precision velocimetry and spectropolarimetry by Moutou, Claire, Donati, Jean-François, Debras, Florian

“…SPIRou, installed at the Canada–France–Hawai’i telescope, was designed to explore such planetary systems and characterize their properties. With a wide spectral range and large resolving power, SPIRou is also optimized for transmission spectroscopy and for investigating the chemical composition of exoplanetary atmospheres.…”
Get full text

Demographics of M Dwarf Binary Exoplanet Hosts Discovered by TESS by Rachel A. Matson, Rebecca Gore, Steve B. Howell, David R. Ciardi, Jessie L. Christiansen, Catherine A. Clark, Ian J. M. Crossfield, Sergio B. Fajardo-Acosta, Rachel B. Fernandes, Elise Furlan, Emily A. Gilbert, Erica Gonzales, Kathryn V. Lester, Michael B. Lund, Elisabeth C. Matthews, Alex S. Polanski, Joshua E. Schlieder, Carl Ziegler

“…However, 20%–30% of M dwarfs have companions that can impact the formation and evolution of planetary systems. We use high-resolution imaging and Gaia astrometry to detect stellar companions around M dwarf exoplanet hosts discovered by TESS and determine the projected separation and estimated stellar masses for each system. …”
Get full text

Dynamics of Small, Constant-size Particles in a Protoplanetary Disk with an Embedded Protoplanet by Ellen M. Price, Eric Van Clepper, Fred J. Ciesla

“…Hydrodynamical simulations of protoplanetary disk dynamics are useful tools for understanding the formation of planetary systems, including our own. Approximations are necessary to make these simulations computationally tractable. …”
Get full text

Imaging exoplanets with coronagraphic instruments by Galicher, Raphaël, Mazoyer, Johan

“…Exoplanetary science is a very active field of astronomy nowadays, with questions still opened such as how planetary systems form and evolve (occurrence, process), why such a diversity of exoplanets is observed (mass, radius, orbital parameters, temperature, composition), and what are the interactions between planets, circumstellar disk and their host star. …”
Get full text

Gaia-4b and 5b: Radial Velocity Confirmation of Gaia Astrometric Orbital Solutions Reveal a Massive Planet and a Brown Dwarf Orbiting Low-mass Stars by Gudmundur Stefánsson, Suvrath Mahadevan, Joshua N. Winn, Marcus L. Marcussen, Shubham Kanodia, Simon Albrecht, Evan Fitzmaurice, Onė Mikulskytė, Caleb I. Cañas, Juan I. Espinoza-Retamal, Yiri Zwart, Daniel M. Krolikowski, Andrew Hotnisky, Paul Robertson, Jaime A. Alvarado-Montes, Chad F. Bender, Cullen H. Blake, J. R. Callingham, William D. Cochran, Megan Delamer, Scott A. Diddams, Jiayin Dong, Rachel B. Fernandes, Mark R. Giovinazzi, Samuel Halverson, Jessica Libby-Roberts, Sarah E. Logsdon, Michael W. McElwain, Joe P. Ninan, Jayadev Rajagopal, Varghese Reji, Arpita Roy, Christian Schwab, Jason T. Wright

Get full text