Results 11 to 20 of about 1,478 (224)
Circumstellar matter studied by spectrally-resolved interferometry
, 2012 This paper describes some generalities about spectro-interferometry and the role it has played in the last decade for the better understanding of circumstellar matter. I provide a small history of the technique and its origins, and recall the basics of differential phase and its central role for the recent discoveries.
Millour, Florentin
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Detached Circumstellar Matter as an Explanation for Slowly-Rising Interacting Type Ibc Supernovae
The Open Journal of AstrophysicsSome hydrogen-poor (Type Ibc) supernovae (SNe) are known to have massive circumstellar matter (CSM) that are well detached from the star. Using the open-source code \texttt{CHIPS}, we construct a grid of models of SN Ibc interacting with detached CSM ...
Yuki Takei, Daichi Tsuna
doaj +2 more sources
Effect of Matter Accretion on Lithium Enhancement of Giants
The Astrophysical JournalA subset of low-mass giants (
Xue-Feng Li +5 more
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Distribution of magnetically confined circumstellar matter in oblique rotators [PDF]
Astronomy & Astrophysics, 2004 We consider the mechanical equilibrium and stability of matter trapped in the magnetosphere of a rapidly rotating star. Assuming a dipolar magnetic field and arbitrary inclination of the magnetic axis with respect to the axis of rotation we find stable equilibrium positions a) in a (warped) disk roughly aligned with the magnetic equatorial plane and b)
Preuss, O. +3 more
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Transients by Black Hole Formation from Red Supergiants: Impact of Dense Circumstellar Matter
The Astrophysical JournalFailed supernovae (SNe), which are likely the main channel for forming stellar-mass black holes, are predicted to accompany mass ejections much weaker than typical core-collapse SNe.
Daichi Tsuna +3 more
doaj +2 more sources
The Circumstellar Matter of Cygnus X-3 [PDF]
Symposium - International Astronomical Union, 1998 X-ray source in Cyg X-3 is embedded in the photo-ionized circumstellar gas. Recombination edges and emission lines were detected by ASCA observation (Kawashima, Kitamoto 1996; Liedahl, Paerels 1996). The strength of the Kα line and the recombination edge are simply determined by the atomic process.
S. Kitamoto, K. Kawashima
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Circumstellar H2O in M-type AGB stars
, 2008 Surprisingly high amounts of H2O have recently been reported in the circumstellar envelope around the M-type AGB star W Hya. However, substantial uncertainties remain, as the required radiative transfer modelling is difficult due to high optical depths ...
Olofsson, Hans, +6 more
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SN 2020bio: A Double-peaked, H-poor Type IIb Supernova with Evidence of Circumstellar Interaction
The Astrophysical Journal, 2023 We present photometric and spectroscopic observations of SN 2020bio, a double-peaked Type IIb supernova (SN) discovered within a day of explosion, primarily obtained by Las Cumbres Observatory and Swift.
C. Pellegrino +14 more
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Synthesis of organic compounds in the circumstellar environment [PDF]
, 2008 Through the techniques of millimeter-wave and infrared spectroscopy, over 60 species of gas-phase molecules and a variety of inorganic and organic solids have been detected in the short phase of stellar evolution between the asymptotic giant branch and ...
Kwok, S
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Star Formation and the Circumstellar Matter of Young Stellar Objects [PDF]
Symposium - International Astronomical Union, 1987 We propose that the formation of low mass stars in molecular clouds takes place in four stages. The first stage is the formation of slowly rotating cloud cores through the slow leakage of magnetic (and turbulent) support by ambipolar diffusion. These cores asymptotically approach quasistatic states resembling singular isothermal spheres, but such end ...
Frank H. Shu, Fred C. Adams
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