Results 1 to 10 of about 42,393 (296)

Are There Terrestrial Planets Lurking in the Outer Solar System? [PDF]

The Astrophysical Journal Letters, 2023
Motivated by recent measurements of the free-floating-planet mass function at terrestrial masses, we consider the possibility that the solar system may have captured a terrestrial planet early in its history.
Amir Siraj
doaj   +6 more sources

Terrestrial Planet Formation in Extra-Solar Planetary Systems [PDF]

Proceedings of the International Astronomical Union, 2008
Terrestrial planets form in a series of dynamical steps from the solid component of circumstellar disks. First, km-sized planetesimals form likely via a combination of sticky collisions, turbulent concentration of solids, and gravitational collapse from ...
Abe, Bean, Canup, Carroll, Collins, Dominik, Dullemond, Sean N. Raymond, Selsis, Ward, Weidenschilling   +10 more
core   +3 more sources

Constraining the Formation of the Four Terrestrial Planets in the Solar System [PDF]

Astrophysical Journal, 2019
Abstract To reproduce the orbits and masses of the terrestrial planets (analogs) of the solar system, most studies scrutinize simulations for success as a batch. However, there is insufficient discussion in the literature on the likelihood of forming planet analogs simultaneously in the same system (analog system). To address this issue,
Patryk Sofia Lykawka, Takashi Itô
exaly   +7 more sources

Did the terrestrial planets of the Solar System form by pebble accretion? [PDF]

Earth and Planetary Science Letters
The dominant accretion process leading to the formation of the terrestrial planets of the Solar System is a subject of intense scientific debate. Two radically different scenarios have been proposed. The classic scenario starts from a disk of planetesimals which, by mutual collisions, produce a set of Moon to Mars-mass planetary embryos.
Alessandro Morbidelli, T. Kleine, F. Nimmo   +2 more
exaly   +7 more sources

Can narrow discs in the inner Solar system explain the four terrestrial planets? [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT A successful Solar system model must reproduce the four terrestrial planets. Here, we focus on (1) the likelihood of forming Mercury and the four terrestrial planets in the same system (a 4-P system); (2) the orbital properties and masses of each terrestrial planet; and (3) the timing of Earth’s last giant impact and the mass ...
Patryk Sofia Lykawka
exaly   +6 more sources

Constructing the secular architecture of the solar system II: the terrestrial planets [PDF]

Astronomy and Astrophysics, 2009
We investigate the dynamical evolution of the terrestrial planets during the planetesimal-driven migration of the giant planets. A basic assumption of this work is that giant planet migration occurred after the completion of terrestrial planet formation, such as in the models that link the former to the origin of the Late Heavy Bombardment.
Ramon Brasser, Alessandro Morbidelli, R. S. Gomes, K. Tsiganis, Harold F. Levison   +4 more
exaly   +6 more sources

Formation of the terrestrial planets in the solar system around 1 au via radial concentration of planetesimals [PDF]

Astronomy and Astrophysics, 2018
Context. No planets exist inside the orbit of Mercury and the terrestrial planets of the solar system exhibit a localized configuration. According to thermal structure calculation of protoplanetary disks, a silicate condensation line (~1300 K) is located around 0.1 au from the Sun except for the early phase of disk evolution, and planetesimals could ...
Masahiro Ogihara, Eiichiro Kokubo, Takeru K. Suzuki, Alessandro Morbidelli   +3 more
exaly   +8 more sources

Building the terrestrial planets: Constrained accretion in the inner Solar System [PDF]

Icarus, 2009
Accepted to Icarus. 21 pages, 12 figures, 5 tables in emulateapj format. Figures 3 and 4 degraded.
Sean N. Raymond, D. P. O’Brien, Alessandro Morbidelli, Nathan A. Kaib   +3 more
exaly   +6 more sources

Atmospheric Escape from Solar System Terrestrial Planets and Exoplanets [PDF]

Annual Review of Earth and Planetary Sciences, 2015
It has been known for decades that atmospheric escape is important for the evolution of terrestrial planets in the Solar System, although exactly how atmospheric escape changes the atmospheres of these bodies is still hotly debated. Rapidly increasing numbers of exoplanet observations provide new targets against which atmospheric escape models are ...
Feng Tian
exaly   +4 more sources

KOI-3158: The oldest known system of terrestrial-size planets [PDF]

EPJ Web of Conferences, 2015
The first discoveries of exoplanets around Sun-like stars have fueled efforts to find ever smaller worlds evocative of Earth and other terrestrial planets in the Solar System. While gas-giant planets appear to form preferentially around metal-rich stars,
Campante T. L., Barclay T., Swift J. J., Huber D., Adibekyan V. Zh., Cochran W., Burke C. J., Isaacson H., Quintana E. V., Davies G. R., Silva Aguirre V., Ragozzine D., Riddle R., Baranec C., Basu S., Chaplin W. J., Christensen-Dalsgaard J., Metcalfe T. S., Bedding T. R., Handberg R., Stello D., Brewer J. M., Hekker S., Karoff C., Kolbl R., Law N. M., Lundkvist M., Miglio A., Rowe J. F., Santos N. C., Van Laerhoven C., Arentoft T., Elsworth Y. P., Fischer D. A., Kawaler S. D., Kjeldsen H., Lund M. N., Marcy G. W., Sousa S. G., Sozzetti A., White T. R.   +40 more
doaj   +4 more sources