Results 131 to 140 of about 4,364 (222)
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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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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IUE and IRAS observations of luminous M stars with varying gas-to dust ratios [PDF]
, 1986 Circumstellar gas and dust surrounding M giants and supergiants show luminous M stars to split into two distinct classes. Stars with a high gas to dust ratio all show chromospheric Ca II, H, and K emission. Stars with a high dust to gas ratio do not show
Carpenter, K. G. +2 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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The influence of grain growth in circumstellar dust envelopes on observed colors and polarization of some eruptive stars [PDF]
, 1989 R CrB stars are classical examples of stars where dust envelope formation takes place. Dust envelope formation was detected around the Kuwano-Honda object (PU Vul) in 1980 to 1981 when the star's brightness fell to 8(sup m).
Efimov, Yu. S.
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The Astrophysical Journal LettersWe present near-infrared (NIR) and optical observations and analysis of the Type Ibn/Icn supernova (SN) 2023xgo, spanning the period from 2 to 100 days past explosion.
Masayuki Yamanaka, Takahiro Nagayama
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Infrared emission towards SN 1987A, 11 years after outburst: Properties of the circumstellar dust [PDF]
, 2002 Detailed models are presented for the late epoch mid infrared (MIR) emission from collisionally heated grains in the shocked circumstellar gas around SN 1987A.
Tuffs, R., Völk, H., Fischera, J.
core
The Astrophysical JournalWe present Atacama Large Millimeter/submillimeter Array observations of multiwavelength dust emissions at 3.1 and 1.3 mm, along with molecular line emissions of CO(2–1), CO(3–2), ^13 CO(3–2), and C ^18 O(3–2) at spatial resolutions of 7–45 au toward the ...
Nguyen Thi Phuong, Nguyen Tat Thang
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IRC + 10 216 revisited. Pt. 1 The circumstellar dust shell [PDF]
, 1996 A spherically symmetric dust radiative transfer code is used to model the circumstellar dust shell around IRC +10 216. Compared to numerous previous models a much larger body of observational data is used as constraints; the spectral energy distribution ...
Groenewegen, M.A.T. +1 more
core
Radiation-driven acceleration in the expanding WR140 dust shell. [PDF]
Nature, 2022 Han Y, Tuthill PG, Lau RM, Soulain A.
europepmc +1 more source