Results 121 to 130 of about 16,468 (216)

Are WASP-107-like Systems Consistent with High-eccentricity Migration?

The Astrophysical Journal
WASP-107 b seems to be a poster child of the long-suspected high-eccentricity migration scenario. It is on a 5.7 day, polar orbit. The planet is Jupiter-like in radius but Neptune-like in mass with exceptionally low density.
Hang Yu, Fei Dai
doaj   +1 more source

PLANETARY POPULATIONS IN THE MASS-PERIOD DIAGRAM: A STATISTICAL TREATMENT OF EXOPLANET FORMATION AND THE ROLE OF PLANET TRAPS [PDF]

, 2013
Yasuhiro Hasegawa, Ralph E. Pudritz
openalex   +1 more source

Formation of stars, substellar objects and exoplanets : Observations of multiplicity

, 2011
Many nearby stars are part of a binary or multiple system. Details about their history are preserved in their multiplicity characteristics, and observations of binary/multiple star systems provide a way to measure fundamental physical properties of the stars as well as clues to their formation and evolution.
openaire   +2 more sources

TOI-880 is an Aligned, Coplanar, Multiplanet System

The Astronomical Journal
Although many cases of stellar spin–orbit misalignment are known, it is usually unclear whether a single planet’s orbit was tilted or if the entire protoplanetary disk was misaligned.
Elina Y. Zhang, Huan-Yu Teng, Fei Dai, Andrew W. Howard, Samuel P. Halverson, Howard Isaacson, Ryan A. Rubenzahl, Xian-Yu Wang, Songhu Wang, Benjamin J. Fulton, Louise D. Nielsen, Jack Lubin, Steven Giacalone, Luke B. Handley, Erik A. Petigura, Emma V. Turtelboom, Alex S. Polanski, Steve R. Gibson, Kodi Rider, Arpita Roy, Ashley Baker, Jerry Edelstein, Christopher L. Smith, Josh Walawender, Joshua N. Winn   +24 more
doaj   +1 more source

The sub-Jupiter/Neptune desert of exoplanets: parameter dependent boundaries and implications on planet formation [PDF]

, 2019
Gy. M. Szabó, Szilárd Kálmán
openalex   +1 more source

Boundary Layers of Circumplanetary Disks around Spinning Planets. II. Global Modes with Azimuthal Magnetic Fields

The Astrophysical Journal
The accretion of material from disks onto weakly magnetized objects invariably involves its traversal through a material surface, known as the boundary layer (BL).
Zhihao Fu, Shunquan Huang, Cong Yu
doaj   +1 more source

Constraints on the Orbit of the Young Substellar Companion GQ Lup B from High-resolution Spectroscopy and VLTI/GRAVITY Astrometry

The Astrophysical Journal
Understanding the orbits of giant planets is critical for testing planet formation models, particularly at wide separations (>10 au) where traditional core accretion becomes inefficient.
Vidya Venkatesan, S. Blunt, J. J. Wang, S. Lacour, G.-D. Marleau, G. A. L. Coleman, L. Guerrero, W. O. Balmer, L. Pueyo, T. Stolker, J. Kammerer, N. Pourré, M. Nowak, E. Rickman, A. Sivaramakrishnan, D. Sing, K. Wagner, A.-M. Lagrange, R. Abuter, A. Amorim, R. Asensio-Torres, J.-P. Berger, H. Beust, A. Boccaletti, M. Bonnefoy, H. Bonnet, M. S. Bordoni, G. Bourdarot, W. Brandner, F. Cantalloube, P. Caselli, B. Charnay, G. Chauvin, A. Chavez, A. Chomez, E. Choquet, V. Christiaens, Y. Clénet, V. Coudé du Foresto, A. Cridland, R. Davies, R. Dembet, J. Dexter, A. Drescher, G. Duvert, A. Eckart, F. Eisenhauer, N. M. Förster Schreiber, P. Garcia, R. Garcia Lopez, E. Gendron, R. Genzel, S. Gillessen, J. H. Girard, S. Grant, X. Haubois, G. Heissel, Th. Henning, S. Hinkley, S. Hippler, M. Houllé, Z. Hubert, L. Jocou, M. Keppler, P. Kervella, L. Kreidberg, N. T. Kurtovic, V. Lapeyrère, J.-B. Le Bouquin, D. Lutz, A.-L. Maire, F. Mang, A. Mérand, C. Mordasini, D. Mouillet, E. Nasedkin, T. Ott, G. P. P. L. Otten, C. Paladini, T. Paumard, K. Perraut, G. Perrin, S. Petrus, O. Pfuhl, D. C. Ribeiro, Z. Rustamkulov, J. Shangguan, T. Shimizu, A. Shields, J. Stadler, O. Straub, C. Straubmeier, E. Sturm, L. J. Tacconi, A. Vigan, F. Vincent, S. D. von Fellenberg, F. Widmann, T. O. Winterhalder, J. Woillez, S. Yazici, the ExoGRAVITY Collaboration   +101 more
doaj   +1 more source

Science with an ngVLA: Observing the Effects of Chemistry on Exoplanets and Planet Formation

, 2018
One of the primary mechanisms for inferring the dynamical history of planets in our Solar System and in exoplanetary systems is through observation of elemental ratios (i.e. C/O). The ability to effectively use these observations relies critically on a robust understanding of the chemistry and evolutionary history of the observed abundances ...
McGuire, Brett A., Bergin, Edwin, Blake, Geoffrey A., Burkhardt, Andrew M., Cleeves, L. Ilsedore, Loomis, Ryan A., Remijan, Anthony J., Shingledecker, Christopher N., Willis, Eric R.   +8 more
openaire   +2 more sources

Strong Fractionation of Deuterium and Helium in Sub-Neptune Atmospheres along the Radius Valley

The Astrophysical Journal
We simulate atmospheric fractionation in escaping planetary atmospheres using IsoFATE , a new open-source numerical model. We expand the parameter space studied previously to planets with tenuous atmospheres that exhibit the greatest helium and deuterium
Collin Cherubim, Robin Wordsworth, Renyu Hu, Evgenya Shkolnik   +3 more
doaj   +1 more source

Where Are the Water Worlds? Identifying Exo-water-worlds Using Models of Planet Formation and Atmospheric Evolution

The Astrophysical Journal
Planet formation models suggest that the small exoplanets that migrate from beyond the snowline of the protoplanetary disk likely contain water-ice-rich cores (∼50% by mass), also known as water worlds.
Aritra Chakrabarty, Gijs D. Mulders
doaj   +1 more source