Results 101 to 110 of about 17,073 (217)
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.
openaire +4 more sources
Simulations of Multiple Dust Ring Formation in a Subsolar-metallicity Protoplanetary Disk
The Astrophysical JournalSuper-Earths exist around subsolar-metallicity host stars with a frequency comparable to that around solar-metallicity stars, suggesting efficient assembly of dust grains even in metal-deficient environments.
Ryoki Matsukoba +2 more
doaj +1 more source
Discovery of Crystallized Water Ice in a Silhouette Disk in the M43 Region
, 2012 We present the 1.9--4.2um spectra of the five bright ...
Terada, Hiroshi, Tokunaga, Alan T.
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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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Young Binary Stars and Associated Disks [PDF]
, 1999 The typical product of the star formation process is a binary star. Binaries have provided the first dynamical measures of the masses of pre-main-sequence (PMS) stars, providing support for the calibrations of PMS evolutionary tracks.
Ghez, Andrea M. +3 more
core +2 more sources
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
doaj +1 more source
Infrared spectroscopy of extraterrestrial material: comparison with astronomical spectra of dust [PDF]
, 2005 Infrared spectra of components (CAI, matrix etc.) from type 3 carbonacous chondrites (Allende, Ornans, Vigarano) are compared with infrared spectra from astronomical objects (comets, zodiacal light, circumstellar disks and others)
Grady, M. M., Koehler, M., Morlok, A.
core
Rotation-disk connection for very low mass and substellar objects in the Orion Nebula Cluster
, 2010 Angular momentum loss requires magnetic interaction between the forming star and both the circumstellar disk and the magnetically driven outflows. In order to test these predictions many authors have investigated a rotation-disk connection in pre-main ...
Biazzo +44 more
core +1 more source