Results 71 to 80 of about 2,119 (235)
Imaging Circumstellar Debris Disks
, 1998 4 pages, includes one color PostScript figure, to appear in Proceedings of the Vatican Observatory Symposium on Astrophysics Research and Science ...
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The Warped Circumstellar Disk of HD 100546
The Astrophysical Journal, 2006 We propose that the two armed spiral features seen in visible Hubble Space Telescope images of scattered light in HD100546's circumstellar disk are caused by the illumination of a warped outer disk. A tilt of 6-15 degrees from the symmetry plane can cause the observed surface brightness variations providing the disk is very twisted (highly warped) at ...
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Multiwavelength Dust Characterization of the HL Tau Disk and Implications for Planet Formation
The Astrophysical JournalWe present a comprehensive analysis of the HL Tau dust disk by modeling its intensity profiles across six wavelengths (0.45–7.9 mm) with a resolution of 0 $\mathop{.}\limits^{^{\prime\prime} }$ 05 (∼7 au). Using a Markov Chain Monte Carlo (MCMC) approach,
Takahiro Ueda +6 more
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The 12CO gas structures of protoplanetary disks in the Upper Scorpius region
Astronomy & AstrophysicsWe present measurements of key protoplanetary disk properties inferred from parametric models of ALMA 12CO spectral line visibilities. We derived gas-disk radii, integrated fluxes, optically thick emission layers, and brightness temperature profiles for ...
Zallio Luigi +15 more
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CIRCUMSTELLAR DISKS AROUND BINARY STARS IN TAURUS
The Astrophysical Journal, 2014 We have conducted a survey of 17 wide (> 100 AU) young binary systems in Taurus with the Atacama Large Millimeter Array (ALMA) at two wavelengths. The observations were designed to measure the masses of circumstellar disks in these systems as an aid to understanding the role of multiplicity in star and planet formation.
Akeson, R. L., Jensen, Eric L.N.
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The Astrophysical JournalRecent high-resolution observations have enabled detailed investigations of the circumstellar environments around Class 0/I protostars. Several studies have reported that the infall velocity of the envelope is a few times smaller than the freefall ...
Shingo Hirano +2 more
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Probing Dust and Gas Properties Using Ringed Disks
The Astrophysical Journal LettersHow rapidly a planet grows in mass and how far it may park from the host star depend sensitively on two nondimensional parameters: Stokes number St and turbulent α .
Eve J. Lee
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Questing for Minute Traces of Molecular Gas in Circumstellar Debris Disks: AU Microscopii and 49 Ceti Edition [PDF]
, 2018 Zachary Stafford Lambros
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