Results 311 to 320 of about 300,769 (347)
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2008
Long-period radial velocity (RV) variations were discovered over 13 years ago in the K giant stars β Gem, α Tau, and α Boo by [1]. One hypothesis for these variations was that they were caused by substellar companions with masses of 2–11 M Jupiter and orbital semi-major axes of ≈ 2 AU.
A. P. Hatzes +5 more
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Long-period radial velocity (RV) variations were discovered over 13 years ago in the K giant stars β Gem, α Tau, and α Boo by [1]. One hypothesis for these variations was that they were caused by substellar companions with masses of 2–11 M Jupiter and orbital semi-major axes of ≈ 2 AU.
A. P. Hatzes +5 more
openaire +1 more source
EAS Publications Series, 2006
The observed brightness fluctuations and large-scale structures on the surface of the Red Supergiant Betelgeuse make the star a prime targed for future interferometric measurements. At the same time, they open the possibility to resolve these structures in numerical radiation hydrodynamics simulations of the entire star.
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The observed brightness fluctuations and large-scale structures on the surface of the Red Supergiant Betelgeuse make the star a prime targed for future interferometric measurements. At the same time, they open the possibility to resolve these structures in numerical radiation hydrodynamics simulations of the entire star.
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Physics Today, 1976
Theorists are paying a lot of attention nowadays to the structure and evolution of highly luminous stars with low surface temperatures. These stars, referred to as “red giants” because of their color and large radii, are believed to be in an advanced phase of their evolution.
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Theorists are paying a lot of attention nowadays to the structure and evolution of highly luminous stars with low surface temperatures. These stars, referred to as “red giants” because of their color and large radii, are believed to be in an advanced phase of their evolution.
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Science, 1997
In his report “Giant planet formation by gravitational instability” ([20 June, p. 1836][1]), Alan P. Boss comments on the time scale for the dissipation of gaseous disks about young stars and the frequency of Jupiter-like planets in our Milky Way galaxy.
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In his report “Giant planet formation by gravitational instability” ([20 June, p. 1836][1]), Alan P. Boss comments on the time scale for the dissipation of gaseous disks about young stars and the frequency of Jupiter-like planets in our Milky Way galaxy.
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Differential rotation of giant stars
Astronomische Nachrichten, 2007AbstractFrom a set of high‐resolution spectral observations of late type giant stars we used Doppler imaging to derive time‐series temperature maps of the stellar surfaces. Using these temperature maps, it is possible to track the temporal changes of the spot features and derive estimates of the strength and sign of the differential surface rotation of
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Giant virus biology and diversity in the era of genome-resolved metagenomics
Nature Reviews Microbiology, 2022Frederik Schulz +2 more
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Star Forming Giant Molecular Clouds
1991The properties of galactic giant molecular clouds (GMCs) in the solar vicinity and in the inner Galaxy are reviewed. Special attention is given to the role of the clouds in forming stars. The question of whether all GMCs form stars is raised and it is shown that there is little evidence that GMCs anywhere in the Galaxy are devoid of star formation ...
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2008
A discussion is presented of the observations of circumstellar envelopes around late-type giant stars. The results are treated in two broad categories. First, there are extensive surveys which provide a few basic parameters of the flows (vexp, dM/dt and/or abundance information). These indicate the importance of rapid mass-loss to stellar evolution and
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A discussion is presented of the observations of circumstellar envelopes around late-type giant stars. The results are treated in two broad categories. First, there are extensive surveys which provide a few basic parameters of the flows (vexp, dM/dt and/or abundance information). These indicate the importance of rapid mass-loss to stellar evolution and
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Coalescence of black hole–neutron star binaries
Living Reviews in Relativity, 2021Koutarou Kyutoku +2 more
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