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, 2000
Various papers on the formation of stars and planets are presented. The general topics addressed include: molecular clouds and star formation, young stellar objects and circumstellar disks, chemistry and grains in molecular clouds and the solar nebula ...
V. Mannings, A. Boss, S. Russell
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Various papers on the formation of stars and planets are presented. The general topics addressed include: molecular clouds and star formation, young stellar objects and circumstellar disks, chemistry and grains in molecular clouds and the solar nebula ...
V. Mannings, A. Boss, S. Russell
semanticscholar +1 more source
Formation of the Giant Planets by Concurrent Accretion of Solids and Gas
, 1995New numerical simulations of the formation of the giant of the second phase. planets are presented, in which for the first time both the gas and The actual rates at which the giant planets accreted small planetesimal accretion rates are calculated in a ...
J. Pollack +5 more
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Atmospheric reconnaissance of the habitable-zone Earth-sized planets orbiting TRAPPIST-1
, 2018Seven temperate Earth-sized exoplanets readily amenable for atmospheric studies transit the nearby ultracool dwarf star TRAPPIST-1 (refs 1,2). Their atmospheric regime is unknown and could range from extended primordial hydrogen-dominated to depleted ...
J. de Wit +16 more
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Forming Planets via Pebble Accretion
, 2017The detection and characterization of large populations of pebbles in protoplanetary disks have motivated the study of pebble accretion as a driver of planetary growth.
A. Johansen, M. Lambrechts
semanticscholar +1 more source
Nature, 2007
Of the over 200 known extrasolar planets, just 14 pass in front of and behind their parent stars as seen from Earth. This fortuitous geometry allows direct determination of many planetary properties. Previous reports of planetary thermal emission give fluxes that are roughly consistent with predictions based on thermal equilibrium with the planets ...
L. Jeremy Richardson +6 more
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Of the over 200 known extrasolar planets, just 14 pass in front of and behind their parent stars as seen from Earth. This fortuitous geometry allows direct determination of many planetary properties. Previous reports of planetary thermal emission give fluxes that are roughly consistent with predictions based on thermal equilibrium with the planets ...
L. Jeremy Richardson +6 more
openaire +3 more sources
A resonant chain of four transiting, sub-Neptune planets
Nature, 2016Surveys have revealed many multi-planet systems containing super-Earths and Neptunes in orbits of a few days to a few months. There is debate whether in situ assembly or inward migration is the dominant mechanism of the formation of such planetary ...
S. Mills +5 more
semanticscholar +1 more source
Nature, 2006
Further observations of an object dubbed 2003 UB313, which lies beyond Neptune, show that its diameter is around 3,100 kilometres. This makes it larger than Pluto, the smallest ‘traditional’ Solar System planet. The discovery of the trans-neptunian object 2003 UB313 in July 2005 has rekindled the debate over which objects should be called planets ...
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Further observations of an object dubbed 2003 UB313, which lies beyond Neptune, show that its diameter is around 3,100 kilometres. This makes it larger than Pluto, the smallest ‘traditional’ Solar System planet. The discovery of the trans-neptunian object 2003 UB313 in July 2005 has rekindled the debate over which objects should be called planets ...
openaire +2 more sources
Science, 2001
Cool objects found in young star clusters in Orion and Perseus, such as those reported by M. R. Zapatero Osorio and colleagues in their research article (6 Oct., p. 103), have been described variously as “planetary mass objects,” “isolated giant planets,” “free-floating planets,” and “superplanets” (1).
McCaughrean, Mark +7 more
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Cool objects found in young star clusters in Orion and Perseus, such as those reported by M. R. Zapatero Osorio and colleagues in their research article (6 Oct., p. 103), have been described variously as “planetary mass objects,” “isolated giant planets,” “free-floating planets,” and “superplanets” (1).
McCaughrean, Mark +7 more
openaire +4 more sources