Results 51 to 60 of about 3,232,660 (177)

ALMA Reveals an Eccentricity Gradient in the Fomalhaut Debris Disk

The Astrophysical Journal
We present evidence of a negative eccentricity gradient in the debris disk of the nearby A-type main-sequence star, Fomalhaut. Fitting to the high-resolution, archival ALMA 1.32 mm continuum data for Fomalhaut (with a synthesized angular resolution of 0 $
Joshua B. Lovell, Elliot M. Lynch, Jay Chittidi, Antranik A. Sefilian, Sean M. Andrews, Grant M. Kennedy, Meredith MacGregor, David J. Wilner, Mark C. Wyatt   +8 more
doaj   +1 more source

Quantifying the Impact of the Dust Torque on the Migration of Low-mass Planets

The Astrophysical Journal, 2023
Disk solids are critical in many planet formation processes; however, their effect on planet migration remains largely unexplored. Here we assess this important issue for the first time by building on the systematic measurements of dust torques on an ...
Octavio M. Guilera, Pablo Benitez-Llambay, Marcelo M. Miller Bertolami, Martin E. Pessah   +3 more
doaj   +1 more source

On the Orbital Evolution of Multiple Wide Super-Jupiters: How Disk Migration and Dispersal Shape the Stability of the PDS 70 System

The Astrophysical Journal
Direct imaging has revealed exoplanet systems hosting multiple wide-orbit Super-Jupiters, where planet–planet interactions can shape their long-term dynamical evolution.
Clarissa R. Do Ó, Jaehan Bae, Quinn M. Konopacky, Jayke S. Nguyen, Patrick Diamond, Krzysztof Goździewski, Dawid Jankowski   +6 more
doaj   +1 more source

Formation of cold giant planets around late M dwarfs via core accretion and the fate of inner rocky worlds

Astronomy & Astrophysics
Context. Modeling how cold giant planets form around M dwarfs remains a challenge, both because their protoplanetary disks can lack sufficient mass and because such planets are expected to migrate inward while interacting with the disk.
Sanchez M., van der Marel N., Lambrechts M., Paardekooper S., Miguel Y.   +4 more
doaj   +1 more source

LHS 1815b: The First Thick-Disk Planet Detected By TESS [PDF]

, 2020
We report the first discovery of a thick-disk planet, LHS 1815b (TOI-704b, TIC 260004324), detected in the Transiting Exoplanet Survey Satellite (TESS) survey.
Stassun, Keivan, Gan, T., Rojas-Ayala, Bárbara, Livingston, John, Mao, Shude, Furesz, Gabor, Jenkins, J.M., Stassun, K. G., Jenkins, J. M., Astudillo-Defru, Nicola, Law, N., Hirano, Teruyuki, Huang, Chelsea X., Seager, Sara, Winn, Joshua, Ziegler, Carl, Twicken, J. D., Dr. Astudillo-Defru, Nicola, Shporer, A., Luque, R., Jensen, E.L.N., Collins, K. A., Briceño, C., Livingston, J.H., Irwin, J.M., Livingston, John H., Briceño, César, Caldwell, Douglas, Guerrero, N. M., Hirano, T., Gan, Tianjun, Trani, A. A., Quintana, Elisa, Ricker, George R, Howell, Steve, Rojas-Ayala, B., Guerrero, Natalia, Winn, J.N., Law, Nicholas, Anderson, D.R., Mann, A. W., Jenkins, Jon, Ricker, George R., Winters, J. G., Bonfils, X., Gandolfi, Davide, Winters, Jennifer, Vanderspek, R., Irwin, J. M., Jensen, Eric L. N., Winn, Joshua N., Seager, S., Caldwell, D. A., Guerrero, Natalia M., Furesz, G., Shporer, Abraham-Avi, Ricker, G.R., Huang, C.X., Gandolfi, D., Trani, Alessandro A., Latham, David W., Howell, Steve B., Rowden, Pamela, Hellier, Coel, Winters, J.G., Anderson, David, Irwin, Jonathan M., Irwin, Jonathan, Mao, S., Caldwell, D.A., Latham, D. W., Latham, David, Trani, A.A., Trani, Alessandro, Winters, Jennifer G., Tenenbaum, P., Rowden, P., Collins, Karen A., Jensen, Eric L.N., Howell, S.B., Astudillo-Defru, N., Twicken, Joseph D., Ricker, George, Collins, Karen, Latham, D.W., Anglada Escudé, Guillem, Anderson, David R., Bonfils, Xavier, Mann, Andrew W., Mann, Andrew, Huang, Chelsea, Jenkins, Jon M., Mann, A.W., Vanderspek, Roland K, Twicken, Joseph, Hellier, C., Luque, Rafael, Anglada-Escudé, Guillem, Tenenbaum, Peter, Stassun, K.G., Shporer, Avi, Ricker, G. R., Guerrero, N.M., Winn, J. N., Stassun, Keivan G., Quintana, E., Collins, K.A., Anglada-Escudé, G., Twicken, J.D., Huang, C. X., Livingston, J. H., Vanderspek, Roland, Gandolf, Davide, Caldwell, Douglas A., Ziegler, C., Howell, S. B., Jensen, Eric, Anderson, D. R.   +117 more
core   +1 more source

The Search for Disk Perturbing Planets Around the Asymmetrical Debris Disk System HD 111520 Using REBOUND

The Astrophysical Journal
Debris disks, which are optically thin, dusty disks around main-sequence stars, are often found to have structures and/or asymmetries associated with planet–disk interactions.
Katie A. Crotts, Brenda C. Matthews
doaj   +1 more source

The role of inner disk edges in shaping ultra-short-period planet systems around late M dwarfs

Astronomy & Astrophysics
Context. Close-in rocky planets are the most common type of exoplanets around late M dwarfs, ranging from more temperate worlds to highly irradiated lava planets with molten surfaces, and many theoretical studies have attempted to explain their formation.
Brandenberger S. N., Sanchez M., Van der Marel N., Vidotto A. A., Miguel Y.   +4 more
doaj   +1 more source

Exploiting the performance gains of modern disk drives by enhancing data locality. [PDF]

, 2009
Due to the widening performance gap between RAM and disk drives, a large number of I/O optimization methods have been proposed and designed to alleviate the impact of this gap.
Deng, Yuhui
core   +1 more source

An Ideal Testbed for Planet–Disk Interaction: Two Giant Protoplanets in Resonance Shaping the PDS 70 Protoplanetary Disk [PDF]

The Astrophysical Journal Letters, 2019
Abstract While numerical simulations have been playing a key role in the studies of planet–disk interaction, testing numerical results against observations has been limited so far. With the two directly imaged protoplanets embedded in its circumstellar disk, PDS 70 offers an ideal testbed for planet–disk interaction studies.
Jaehan Bae, Zhaohuan Zhu, Clément Baruteau, Myriam Benisty, Cornelis P. Dullemond, Stefano Facchini, Andrea Isella, Miriam Keppler, Laura M. Pérez, Richard Teague   +9 more
openaire   +3 more sources

Migration of Accreting Planets and Black Holes in Disks

The Astrophysical Journal
Nascent planets are thought to lose angular momentum (AM) to the gaseous protoplanetary disk via gravitational interactions, leading to inward migration.
JT Laune, Rixin Li, Dong Lai
doaj   +1 more source