Results 61 to 70 of about 700 (166)
Hα Emission among Evolved FGKM Stars: A Compendium from the Literature
The Astronomical JournalEmission in the wings of the H α line among late-type giant stars occurs as a consequence of conditions in their chromospheres. Data from the literature have been used to document the incidence of H α emission among Population I giant stars as a function
Graeme H. Smith
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Submillimetre observations of circumstellar dust
, 1989 Bibliography: p. 113-120.
openaire +2 more sources
The Astrophysical JournalRecent Atacama Large Millimeter/submillimeter Array (ALMA) observations with 0 $\mathop{.}\limits^{^{\prime\prime} }$ 1 resolution have revealed characteristic substructures in circumstellar disks around young Class I sources, providing clues to the ...
Ayumu Shoshi +6 more
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Dust distribution in circumstellar disks harboring multi-planet systems
Astronomy & AstrophysicsContext. Theoretical formation models and exoplanet detection surveys indicate that systems with multiple giant planets are common. Aims. We investigate how multiple super-thermal-mass planets embedded in a circumstellar disk shape the dust distribution ...
Roatti V., Picogna G., Marzari F.
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Deep Search for a Scattered Light Dust Halo Around Vega with the Hubble Space Telescope
The Astronomical JournalWe present a provisory scattered-light detection of the Vega debris disk using deep Hubble Space Telescope (HST) coronagraphy (PID 16666). At only 7.7 pc, Vega is immensely important in debris disk studies both for its prominence and also because it ...
Schuyler G. Wolff +8 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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Astronomy & AstrophysicsContext. Many circumstellar dust scattering regions have been detected and investigated with polarimetric imaging. However, the quantitative determination of the intrinsic polarization and of dust properties is difficult because of complex observational ...
Schmid H. M., Ma J.
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Dust dynamics in planet-forming discs in binary systems. [PDF]
Eur Phys J Plus, 2023 Zagaria F +3 more
europepmc +1 more source
Long-period Variable Stars in NGC 147 and NGC 185. II. Their Dust Production
The Astrophysical JournalThis study presents a comparative analysis of mass-loss and dust production rates in the dwarf galaxies NGC 147 and NGC 185, focusing on long-period variables (LPVs) and pulsating asymptotic giant branch stars as primary indicators of dust feedback into ...
Hamidreza Mahani +8 more
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Two Decades of Dust Evolution in SN 2005af through JWST, Spitzer, and Chemical Modeling
The Astrophysical JournalThe evolution of dust in core-collapse supernovae (SNe), in general, is poorly constrained owing to a lack of infrared observations a few years after explosion. Most theories of dust formation in SNe heavily rely only on SN 1987A.
Arkaprabha Sarangi +22 more
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