Results 21 to 30 of about 1,969,695 (207)
Microlensing of circumstellar envelopes: II. emission lines from radial and azimuthal flow during fold caustic crossings [PDF]
, 2003 This paper examines the line profile evolution due to bulk motion in circumstellar envelopes during microlensing fold caustic crossing events. These events have recently been shown to be a sensitive probe of stellar surface brightness profiles, thus ...
Bryce, H.M. +5 more
core +1 more source
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
openaire +2 more sources
Microlensing of circumstellar envelopes III. Line profiles from stellar winds in homologous expansion [PDF]
, 2006 This paper examines line profile evolution due to the linear expansion of circumstellar material obsverved during a microlensing event. This work extends our previous papers on emission line profile evolution from radial and azimuthal flow during point ...
Bryce, H.M. +8 more
core +1 more source
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
openaire +2 more sources
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
openaire +1 more source
Infrared Spectroscopy of U Equulei’s Warm Circumstellar Gas [PDF]
The Astrophysical Journal, 2005 21 pages incl.
Geballe, T. R. +3 more
openaire +2 more sources
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
openaire +2 more sources
Debris Disks around Nearby Stars with Circumstellar Gas [PDF]
The Astrophysical Journal, 2008 10 pages including 4 figures.
Roberge, Aki, Weinberger, Alycia J.
openaire +2 more sources
Evolution of Gas and Dust in Circumstellar Disks [PDF]
Symposium - International Astronomical Union, 2000 A clear understanding of the chemical processing of matter as it is transferred from a molecular cloud to a planetary system depends heavily on the physical conditions endured by gas and dust as these accrete onto a disk and are incorporated into planetary bodies.
openaire +2 more sources
Millimetre Observations of Maser-Emitting Planetary Nebulae
Galaxies, 2022 Observations in the millimetre bands of maser-emitting planetary nebulae (PNe) are crucial to study their circumstellar molecular gas at the beginning of the PN phase.
Lucero Uscanga +9 more
doaj +1 more source