Nebula
National Institutes of Health
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Based on axisymmetric hydrodynamical simulations and three-dimensional (3D) reconstructions with Shape, we investigate the…
We present new HST optical imagery as well as new UV and IR spectroscopic data obtained with the Hubble Space Telescope and…
We review our current understanding of the formation and early evolution of the solar nebula, the protoplanetary disk from which…
The growth of meter-sized bodies in the solar nebula by dust accretion is examined. The meter-sized bodies have velocity about 50…
Echelle spectrophotometry of the planetary nebula NGC 5307 is presented. The data consist of Very Large Telescope Ultraviolet…
The Luminous Blue Variable star η Carinae is one of the most massive stars known. It underwent a giant eruption in 1843 in which…
As dust aggregates settled toward the midplane of the solar nebula, a thin dust layer was formed. The rotational velocity was a…
Based on HI maps covering the 3 600 square degrees area delimited by , we investigated the neutral hydrogen distribution in the…
Soft X-ray emission from the ring nebula NGC6888, formed by the stellar wind of the central WolfRayet star HD192163, has been…