Results 31 to 40 of about 75,532 (195)

The Survival of Water within Extrasolar Minor Planets

open access: yes, 2010
We compute that extrasolar minor planets can retain much of their internal H_2O during their host star's red giant evolution. The eventual accretion of a water-rich body or bodies onto a helium white dwarf might supply an observable amount of atmospheric
Canup   +33 more
core   +1 more source

Detection of Sharp Symmetric Features in the Circumbinary Disk Around AK Sco [PDF]

open access: yes, 2015
The Search for Planets Orbiting Two Stars (SPOTS) survey aims to study the formation and distribution of planets in binary systems by detecting and characterizing circumbinary planets and their formation environments through direct imaging.
Asensio-Torres, Ruben   +13 more
core   +6 more sources

Discovery, Observational Data and the Orbit of the Transneptunian Object (420356) Praamžius

open access: yesOpen Astronomy, 2016
A project for astrometric and photometric observations of asteroids with the VATT telescope on Mt. Graham is described. One of the most important results is the discovery of the Transneptunian object (420356) Praamžius. We computed its orbit applying 198
Černis K., Boyle R. P., Wlodarczyk I.
doaj   +1 more source

Orbital properties of binary minor planets

open access: yes, 2010
Many binary minor planets (BMPs; both binary asteroids and binary Trans-Neptunians objects; TNOs) are known to exist in the Solar system. The currently observed orbital and physical properties of BMPs hold essential information and clues about their ...
Naoz, Smadar   +2 more
core   +1 more source

Compositional imprints in density-distance-time: a rocky composition for close-in low-mass exoplanets from the location of the valley of evaporation [PDF]

open access: yes, 2017
We use an end-to-end model of planet formation, thermodynamic evolution, and atmospheric escape to investigate how the statistical imprints of evaporation depend on the bulk composition of planetary cores (rocky vs. icy). We find that the population-wide
Jin, Sheng, Mordasini, Christoph
core   +2 more sources

Interaction between Yarkovsky force and mean-motion resonances: Some specific properties [PDF]

open access: yesSerbian Astronomical Journal, 2016
Recently, we analyzed the role of mean-motion resonances in semi-major axis mobility of asteroids, and established a functional relationship that describes the dependence of the average time spent inside the resonance on the strength of this ...
Milić-Žitnik I.
doaj   +1 more source

Space-Based Thermal Infrared Studies of Asteroids

open access: yes, 2015
Large-area surveys operating at mid-infrared wavelengths have proven to be a valuable means of discovering and characterizing minor planets. Through the use of radiometric models, it is possible to derive physical properties such as diameters, albedos ...
Mainzer, A., Trilling, D., Usui, F.
core   +1 more source

Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate-Mass Subgiants [PDF]

open access: yes, 2007
We report precision Doppler measurements of three intermediate-mass subgiants from Lick and Keck Observatories. All three stars show variability in their radial velocities consistent with planet-mass companions in Keplerian orbits.
Debra A. Fischer   +10 more
core   +2 more sources

Observational data and orbits of the asteroids discovered at the Baldone Observatory in 2015–2018

open access: yesOpen Astronomy, 2020
This paper is devoted to the discovery of 37 asteroids at the Baldone Astrophysical Observatory (MPC 069) from 2015 to 2018, and one of dynamically interesting Mars-crosser (MC) observed at the Baldone Astrophysical Observatory, namely 2008 LX16.
Wlodarczyk Ireneusz   +2 more
doaj   +1 more source

Star Hoppers: Planet Instability and Capture in Evolving Binary Systems

open access: yes, 2012
Many planets are observed in stellar binary systems, and their frequency may be comparable to that of planetary systems around single stars. Binary stellar evolution in such systems influences the dynamical evolution of the resident planets.
Kratter, Kaitlin M., perets, Hagai B.
core   +1 more source

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