Results 11 to 20 of about 740 (174)
High-velocity Circumstellar Gas Orbiting a White Dwarf Star
The Astrophysical JournalNumerous white dwarf stars are known to be orbited by disks of gas and dust. To date, broad, ∼300 km s ^−1 wide, gaseous circumstellar absorption features have only been reported for the already iconic WD 1145+017, where one is witnessing the breakup of ...
B. Zuckerman +8 more
doaj +3 more sources
Planet–planet scattering in circumstellar gas disks [PDF]
Astronomy and Astrophysics, 2010 Astronomy and Astrophysics Letters, in ...
MARZARI, FRANCESCO +2 more
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The Circumstellar Gas of Phi Leonis in the UV [PDF]
The Astronomical Journal, 2021 Abstract HST UV spectra were obtained to study whether the φ Leo system has one or more stellar companions, as shown for the A-star dwarf, HR10, stellar pulsation, or transiting exocomets.
C. A. Grady +4 more
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Type-Ia supernovae in dense circumstellar gas [PDF]
Astronomy Letters, 2004 We propose a simple model for the bolometric light curve of type Ia supernova exploding in a dense circumstellar (CS) envelope to describe the light curves of supernovae 2002ic and 1997cy. The modeling shows that at the radius $\sim7\times10^{15}$ cm the density of CS envelopes around both supernovae is similar.
Chugai, N. N., Yungelson, L. R.
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Hot Gas in the Circumstellar Bubble S308 [PDF]
The Astrophysical Journal, 2003 18 pages, 3 figures, to appear in the Astrophysical Journal, Dec 20 ...
Chu, Y. -H. +4 more
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Detection of circumstellar gas associated with GG Tauri
The Astrophysical Journal, 1993 Double-peaked (C-12)O (1-0) emission centered on the young T Tauri star GG Tau possesses a line profile which may be modeled on the assumption that CO emission arises in an extended circumstellar disk. While bounds on the observed gas mass can be estimated on this basis, it is suggested that a large amount of mass could lie within a small and optically
SKRUTSKIE, MF +8 more
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Dust Rings in the Circumstellar Gas Disks [PDF]
Symposium - International Astronomical Union, 2004 In optically thin gas disks around young Vega-type stars, dust grains are exposed to the stellar radiation pressure and gas drag force. The combination of these forces pushes the grains away from the central star. Typically, 10–100 μm grains migrate outward to become concentrated at the outer edge of the gas disk.
Taku Takeuchi, Pawel Artymowicz
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Infrared Spectroscopy of U Equulei’s Warm Circumstellar Gas [PDF]
The Astrophysical Journal, 2005 21 pages incl.
Geballe, T. R. +3 more
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Sustained Kozai–Lidov Oscillations in Misaligned Circumstellar Gas Disks [PDF]
The Astrophysical Journal Letters, 2021 Abstract A disk around one component of a binary star system with sufficiently high inclination can undergo Kozai–Lidov (KL) oscillations during which the disk inclination and disk eccentricity are exchanged. Previous studies show that without a source of accretion, KL unstable disks exhibit damped oscillations, due to viscous ...
Jeremy L. Smallwood +2 more
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Debris Disks around Nearby Stars with Circumstellar Gas [PDF]
The Astrophysical Journal, 2008 10 pages including 4 figures.
Roberge, Aki, Weinberger, Alycia J.
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