Results 31 to 40 of about 650 (183)
The Circumstellar Matter Around OH44.8-2.3
, 2000 To appear in ``Asymmetrical Planetary Nebulae II: from Origins to Microstructures,'' ASP Conference Series, Vol. 199, 2000; J.H. Kastner, N. Soker, & S.A.
Bobrowsky, M. +3 more
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Circumstellar matter, with particular reference to jets and molecular flows [PDF]
Symposium - International Astronomical Union, 1987 Circumstellar matter exists in many forms, such as winds from early and from late type stars, in infra-red sources and OH and H2O masers, in X-ray sources and jets, and molecular flows and Herbig-Haro objects. There is considerable diversity in the nature of the starlike bodies that underlie these phenomena.
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Clusters Stagnating During Condensation: Metastable Material or a Separate State of Matter?
Annalen der Physik, Volume 537, Issue 10, October 2025.Condensation stagnation, that is, the existence of a delay between nucleation and growth during the gas‐phase particle formation, is a crucial phenomenon, which manifests itself as the presence of supercritical clusters in resulting particulates. The light emission signature of stagnant clusters is identified in the magnesium particle flame in air, and,
Nicholas R. Jaramillo +4 more
wiley +1 more source
On the Circumstellar Matter Distribution around Herbig Ae/Be Stars
The Astrophysical Journal, 1997 The spectral energy distributions (SEDs) observed in Herbig Ae/Be stars are critically analyzed in connection with a spherically symmetric model for matter distribution around the central objects. The possibility that the dusty component is described by an MRN-DL mixture (see the work of Mathis, Rumpl, and Nordsiek; Draine and Lee) and is constituted ...
PEZZUTO S. +2 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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Evolutionary Aspects of Circumstellar Matter in Binary Systems [PDF]
Symposium - International Astronomical Union, 1973 Several groups of close binary stars are considered in an attempt to explain their present state as a consequence of a large-scale mass transfer or mass loss in the past: Algol-like semidetached binaries, some shell stars (AX Mon), some binary X-ray sources (Cen X-3, Her X-1), the recurrent nova T CrB, helium-rich binaries v Sgr and KS Per, and the ...
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Ion‐Scale Characteristics of the Martian Magnetic Pile‐Up Boundary Layer
Geophysical Research Letters, Volume 52, Issue 3, 16 February 2025.Abstract The Martian magnetic pile‐up boundary (MPB) delineates the interface between the magnetosheath and the induced magnetosphere, but its global ion‐scale characteristics remaining unclear. Utilizing a three‐dimensional Hall magnetohydrodynamic (MHD) model, this study aims to reveal the features of the MPB layer, including magnetic field, current ...
Shibang Li +12 more
wiley +1 more source
Infall Explains the Disk Kinematics of AB Aur without Gravitational Instability
The Astrophysical Journal LettersLate-stage infall onto protoplanetary disks can produce large-scale spiral arms. In this Letter, we used 3D smoothed particle hydrodynamics and radiative transfer simulations to study the kinematic perturbations induced in disks by infalling material. We
Josh Calcino +2 more
doaj +1 more source
The Astrophysical Journal, 2023 Type IIn/Ia-CSM supernovae (SNe IIn/Ia-CSM) are classified by their characteristic spectra, which exhibit narrow hydrogen emission lines originating from strong interaction with a circumstellar medium (CSM) together with broad lines of intermediate-mass ...
Kohki Uno +13 more
doaj +1 more source
SEARCHING FOR LIGHT ECHOES DUE TO CIRCUMSTELLAR MATTER IN SNe Ia SPECTRA [PDF]
The Astrophysical Journal, 2015 We present an analytical model for light echoes (LEs) coming from circumstellar material (CSM) around Type Ia Supernovae (SNe Ia). Using this model we find two spectral signatures at 4100 ? and 6200 ? that are useful to identify LEs during the Lira law phase (between 35 and 80 days after maximum light) coming from nearby CSM at distances of 0.01?0.25 ...
Sebastián Marino +5 more
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