Results 21 to 30 of about 5,562 (188)

Planetary migration and the origin of the 2:1 and 3:2 (near)-resonant population of close-in exoplanets [PDF]

Astronomy & Astrophysics, 2017
We present an analytical and numerical study of the orbital migration and resonance capture of fictitious two-planet systems with masses in the super-Earth range undergoing Type-I migration. We find that, depending on the flare index and proximity to the central star, the average value of the period ratio, $P_2/P_1$, between both planets may show a ...
Ramos, X. S., Charalambous, C., Benitez-Llambay, P., Beauge, C.   +3 more
openaire   +4 more sources

Detecting the Signatures of Uranus and Neptune [PDF]

, 2011
With more than 15 years since the the first radial velocity discovery of a planet orbiting a Sun-like star, the time baseline for radial velocity surveys is now extending out beyond the orbit of Jupiter analogs.
Bakos, Barge, Basri, Beichman, Benvenuto, Boisse, Borucki, Boss, Boss, Cahoy, Charbonneau, Colón, Cumming, Dodson-Robinson, Dyudina, Eisler, Eisler, Ford, Fortney, Gould, Ida, Kane, Kane, Kane, Kane, Kennedy, Kennedy, Lagrange, Levison, Li, Lomb, Makarov, Marois, Marois, Matsuo, Mayor, Meunier, Murphy, Naef, O’Toole, Pepe, Pollacco, Rivera, Scargle, Simpson, Steinmetz, Stephen R. Kane, Strassmeier, Sudarsky, Thommes, Thommes, Udem, von Braun, Welsh, Wright, Wright   +55 more
core   +1 more source

How fast do Jupiters grow? Signatures of the snowline and growth rate in the distribution of gas giant planets [PDF]

, 2012
We present here observational evidence that the snowline plays a significant role in the formation and evolution of gas giant planets. When considering the population of observed exoplanets, we find a boundary in mass-semimajor axis space that suggests ...
Horne, Keith, Penny, Matthew T., Rice, Ken   +2 more
core   +3 more sources

Confirming Resonance in Three Transiting Systems

The Astronomical Journal, 2023
Although resonant planets have orbital periods near commensurability, resonance is also dictated by other factors, such as the planets’ eccentricities and masses, and therefore must be confirmed through a study of the system’s dynamics.
Tyler Quinn, Mariah G. MacDonald
doaj   +1 more source

Planet Populations as a Function of Stellar Properties

, 2018
Exoplanets around different types of stars provide a window into the diverse environments in which planets form. This chapter describes the observed relations between exoplanet populations and stellar properties and how they connect to planet formation ...
A Cumming, A Izidoro, A Mortier, A Mortier, A Silburt, A Wolfgang, A. Mortier, AC Boley, AN Youdin, AP Boss, AP Boss, AW Howard, AW Mann, B Courcol, B Rojas-Ayala, Benjamin T. Montet, BMS Hansen, BMS Hansen, C Beaugé, C Cossou, C Dressing, C Dressing, C Laws, C Mordasini, C Mordasini, C Obermeier, C Terquem, Christian Clanton, CJ Burke, Courtney D. Dressing, D Charbonneau, D Foreman-Mackey, D Huber, D Huber, DA Fischer, Daniel C. Fabrycky, DNC Lin, Dun Wang, E Chiang, E Gaidos, E Gaidos, E Gaidos, E Jehin, E Jofré, E Kokubo, E Kokubo, E Kokubo, EA Petigura, EA Petigura, EJ Lee, EW Thommes, F Fressin, F Meru, FJ Ciesla, G Gonzalez, G Gonzalez, G Gonzalez, G Kennedy, G Laughlin, G Laughlin, GAL Coleman, GD Mulders, GD Mulders, GD Mulders, GD Mulders, GW Marcy, GW Wetherill, H Rein, HE Schlichting, I Pascucci, IJM Crossfield, IN Reid, J Maldonado, J Wang, JA Johnson, JA Johnson, JA Johnson, JB Pollack, JE Chambers, JJ Lissauer, JL Christiansen, JN Winn, Jonathan J. Swift, JP Williams, K Fuhrmann, K Kornet, K Sadakane, K.-M. Dittkrist, KC Schlaufman, KC Schlaufman, KC Schlaufman, Konstantin Batygin, L Ghezzi, L Pasquini, LA Buchhave, LA Buchhave, LA Buchhave, M Endl, M Endl, M Gillon, M Ikoma, M Mayor, M Mayor, M. Ansdell, ME Everett, MI Jones, N. C. Santos, NC Santos, NC Santos, NC Santos, NC Santos, P Goldreich, P Pinilla, PW Sullivan, RC Terrien, RI Dawson, RL Gilliland, Robert A. Wittenmyer, RP Butler, S Dong, S Hekker, S Ida, S Ida, S Ida, S Mathur, S Mohanty, S Udry, S Udry, S. G. Sousa, Sabine Reffert, Scott A. Barenfeld, Sean M. Andrews, SG Sousa, SN Raymond, SN Raymond, TD Morton, TM Brown, V. Zh. Adibekyan, Vardan Adibekyan, W Zhu, WR Ward, X Bonfils, Y Hasegawa, Y Hasegawa, Y Takeda, Y. Alibert, Y. Alibert, ZK Berta   +147 more
core   +1 more source

Earths in Other Solar Systems N-body simulations: the Role of Orbital Damping in Reproducing the Kepler Planetary Systems

, 2020
The population of exoplanetary systems detected by Kepler provides opportunities to refine our understanding of planet formation. Unraveling the conditions needed to produce the observed exoplanets will sallow us to make informed predictions as to where ...
Apai, Daniel, Ciesla, Fred J., Mulders, Gijs D., O'Brien, David P., Pascucci, Ilaria   +4 more
core   +1 more source

Exoplanets - search methods, discoveries, and prospects for astrobiology [PDF]

, 2008
Whereas the Solar System has Mars and Europa as the best candidates for finding fossil/extant life as we know it - based on complex carbon compounds and liquid water - the 263 (non-pulsar) planetary systems around other stars as known at 15 September ...
Jones, Barrie W
core   +2 more sources

Effects of rotation and magnetic fields on the lithium abundance and asteroseismic properties of exoplanet-host stars

, 2010
Aims: The effects of rotation and magnetic fields on the surface abundances of solar-type stars are studied in order to investigate whether the reported difference in lithium content of exoplanet-host stars can be related to their rotational history ...
A. Maeder, Asplund, Bouvier, Castro, Chaboyer, Chaplin, Charbonneau, Charbonnel, Christensen-Dalsgaard, Denissenkov, Denissenkov, Denissenkov, Eggenberger, Eggenberger, G. Meynet, Gellert, Irwin, Israelian, Krishnamurthi, Kumar, Mestel, P. Eggenberger, Paquette, Pinsonneault, Pinsonneault, Schatzman, Soderblom, Spruit, Talon, Zahn, Zahn   +30 more
core   +1 more source

Effects of Planetesimal Scattering: Explaining the Observed Offsets from Period Ratios 3:2 and 2:1

The Astrophysical Journal, 2023
The observed deficit and excess of adjacent planet pairs with period ratios narrow and wide of 3:2 and 2:1, the nominal values for the corresponding mean-motion resonances (MMRs), have intrigued many. Previously, using a suite of simulations, Chatterjee &
Tuhin Ghosh, Sourav Chatterjee
doaj   +1 more source

Synergies between Asteroseismology and Exoplanetary Science

, 2017
Over the past decade asteroseismology has become a powerful method to systematically characterize host stars and dynamical architectures of exoplanet systems.
Huber, Daniel
core   +1 more source