Results 61 to 70 of about 79,370 (261)

An Earth-sized Planet on the Verge of Tidal Disruption

The Astronomical Journal
TOI-6255 b (GJ 4256) is an Earth-sized planet (1.079 ± 0.065 R _⊕ ) with an orbital period of only 5.7 hr. With the newly commissioned Keck Planet Finder and CARMENES spectrographs, we determine the planet’s mass to be 1.44 ± 0.14 M _⊕ .
Fei Dai, Andrew W. Howard, Samuel Halverson, Jaume Orell-Miquel, Enric Pallé, Howard Isaacson, Benjamin Fulton, Ellen M. Price, Mykhaylo Plotnykov, Leslie A. Rogers, Diana Valencia, Kimberly Paragas, Michael Greklek-McKeon, Jonathan Gomez Barrientos, Heather A. Knutson, Erik A. Petigura, Lauren M. Weiss, Rena Lee, Casey L. Brinkman, Daniel Huber, Gumundur Stefánsson, Kento Masuda, Steven Giacalone, Cicero X. Lu, Edwin S. Kite, Renyu Hu, Eric Gaidos, Michael Zhang, Ryan A. Rubenzahl, Joshua N. Winn, Te Han, Corey Beard, Rae Holcomb, Aaron Householder, Gregory J. Gilbert, Jack Lubin, J. M. Joel Ong, Alex S. Polanski, Nicholas Saunders, Judah Van Zandt, Samuel W. Yee, Jingwen Zhang, Jon Zink, Bradford Holden, Ashley Baker, Max Brodheim, Ian J. M. Crossfield, William Deich, Jerry Edelstein, Steven R. Gibson, Grant M. Hill, Sharon R Jelinsky, Marc Kassis, Russ R. Laher, Kyle Lanclos, Scott Lilley, Joel N. Payne, Kodi Rider, Paul Robertson, Arpita Roy, Christian Schwab, Abby P. Shaum, Martin M. Sirk, Chris Smith, Adam Vandenberg, Josh Walawender, Sharon X. Wang, Shin-Ywan (Cindy) Wang, Edward Wishnow, Jason T. Wright, Sherry Yeh, José A. Caballero, Juan C. Morales, Felipe Murgas, Evangelos Nagel, Ansgar Reiners, Andreas Schweitzer, Hugo M. Tabernero, Mathias Zechmeister, Alton Spencer, David R. Ciardi, Catherine A. Clark, Michael B. Lund, Douglas A. Caldwell, Karen A. Collins, Richard P. Schwarz, Khalid Barkaoui, Cristilyn Watkins, Avi Shporer, Norio Narita, Akihiko Fukui, Gregor Srdoc, David W. Latham, Jon M. Jenkins, George R. Ricker, Sara Seager, Roland Vanderspek   +96 more
doaj   +1 more source

PPDONet: Deep Operator Networks for Fast Prediction of Steady-state Solutions in Disk–Planet Systems

The Astrophysical Journal Letters, 2023
We develop a tool, which we name Protoplanetary Disk Operator Network (PPDONet), that can predict the solution of disk–planet interactions in protoplanetary disks in real time.
Shunyuan Mao, Ruobing Dong, Lu Lu, Kwang Moo Yi, Sifan Wang, Paris Perdikaris   +5 more
doaj   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Capture into Apsidal Resonance and the Decimation of Planets around Inspiraling Binaries

The Astrophysical Journal Letters
Transiting circumbinary planets (CBPs) are conspicuously rare and entirely absent around stellar binaries with periods ≤7 days. Here we exploit a secular resonance to stimulate the orbit of a CBP into strong, disruptive interactions with the host binary.
Mohammad Farhat, Jihad Touma
doaj   +1 more source

The Spin–Orbit Misalignment of TOI-1842b: The First Measurement of the Rossiter–McLaughlin Effect for a Warm Sub-Saturn around a Massive Star

The Astrophysical Journal Letters, 2023
The mechanisms responsible for generating spin–orbit misalignments in exoplanetary systems are still not fully understood. It is unclear whether these misalignments are related to the migration of hot Jupiters or are a consequence of general star and ...
Kyle Hixenbaugh, Xian-Yu Wang, Malena Rice, Songhu Wang   +3 more
doaj   +1 more source

Models of Star-Planet Magnetic Interaction

, 2017
Magnetic interactions between a planet and its environment are known to lead to phenomena such as aurorae and shocks in the solar system. The large number of close-in exoplanets that were discovered triggered a renewed interest in magnetic interactions ...
A Kopp, A McQuillan, A Strugarek, A Strugarek, A Strugarek, A Strugarek, A Strugarek, AA Vidotto, AF Lanza, AF Lanza, AF Lanza, AF Lanza, AF Lanza, AS Brun, AS Brun, BP Miller, C Damiani, C. Zanni, CA Jones, D Staab, EJ Weber, EL Shkolnik, EP Rubenstein, F Pont, FC Adams, FM Neubauer, Ignazio Pillitteri, J Bouvier, J Llama, J Saur, J Saur, J. D. Alvarado-Gómez, JD Alvarado-Gómez, JD Turner, JD Turner, JF Donati, JM Grießmeier, JT Clarke, K Poppenhaeger, L Fossati, M Cuntz, M. L. Khodachenko, ML Goodman, MW Mengel, O Cohen, O Cohen, O Cohen, O Cohen, O. Cohen, P Figueira, P Tremblin, P Zarka, PW Cauley, Randy O. Laine, RC Fleck, RO Laine, RVE Lovelace, S Duling, S Preusse, S Preusse, S Stanley, T Matsakos, VG Merkin, WH Ip, Xianzhe Jia   +64 more
core   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Carving the Edges of the Rocky Planet Population

The Astrophysical Journal Letters
Short-period planets provide ideal laboratories for testing star–planet interaction. Planets that are smaller than  ∼2 R _⊕ are considered to be largely rocky, either having been stripped of or never having acquired the gaseous envelope.
Eve J. Lee, James E. Owen
doaj   +1 more source

Detectability of continuous gravitational waves from planetary-mass companions orbiting compact stars

Astronomy & Astrophysics
Binary systems with ultrashort-period planetary-mass companions are expected to radiate continuous gravitational waves (GWs). However, earlier studies found that the detectability of such systems by the Laser Interferometer Space Antenna (LISA) is ...
Kurban Abdusattar, Zhou Xia, Wang Na, Huang Yong-Feng, Yan Wenming, Yuan Jianping, Esamdin Ali, Wang Yu-Bin, Wen Zhigang, Yuen Rai   +9 more
doaj   +1 more source

Close encounters of a rotating star with planets in parabolic orbits of varying inclination and the formation of Hot Jupiters

, 2011
(abbreviated) We extend the theory of close encounters of a planet on a parabolic orbit with a star to include the effects of tides induced on the central rotating star. Orbits with arbitrary inclination to the stellar rotation axis are considered.
A. Ray, A. Skumanich, A.G. Kosovichev, A.J. Allen, A.J. Barker, A.J. Barker, A.J. Barker, C.S. Kochanek, D. Lai, D.A. Varshalovich, D.N.C. Lin, F.A. Rasio, H. Saio, H.M. Lee, J. C. B. Papaloizou, J.C.B. Papaloizou, J.C.B. Papaloizou, J.C.B. Papaloizou, J.C.B. Papaloizou, J.L. Friedman, J.N. Winn, M. Nagasawa, P. B. Ivanov, P. Kumar, P.B. Ivanov, P.B. Ivanov, P.B. Ivanov, R.A. Mardling, R.A. Mardling, R.A. Mardling, S. Marchi, S.J. Weidenschilling, W.H. Press   +32 more
core   +1 more source