10 Citations
A Companion Star Launching Jets in the Wind Acceleration Zone of a Giant Star
- PhysicsThe Astrophysical Journal
- 2020
By conducting three-dimensional (3D) hydrodynamical simulations we find that jets that a main sequence companion launches as it orbits inside the wind acceleration zone of an asymptotic giant branch…
The creation of AGB fallback shells
- Physics
- 2016
The possibility that mass ejected during Asymptotic Giant Branch (AGB) stellar evolution phases falls back towards the star has been suggested in applications ranging from the formation of accretion…
ACCELERATING VERY FAST GAS IN THE SUPERNOVA IMPOSTOR SN 2009ip WITH JETS FROM A STELLAR COMPANION
- Physics
- 2013
Using hydrodynamic numerical simulations we show that high-velocity ejecta with v ~ 104 km s–1 in the outbursts of the supernova impostor SN 2009ip and similar luminous blue variable (LBV) stars can…
Wave-driven stellar expansion and binary interaction in pre-supernova outbursts
- Physics
- 2014
We suggest that the main outcome of energy leakage carried by waves from the core to the envelope of pre-collapse massive stars is envelope expansion rather than major mass ejection. We show that the…
THE RED RECTANGLE: ITS SHAPING MECHANISM AND ITS SOURCE OF ULTRAVIOLET PHOTONS
- Physics
- 2009
The proto planetary Red Rectangle (RR) nebula is powered by HD 44179, a spectroscopic binary (P = 318 d), in which a luminous post-asymptotic giant branch (AGB) component is the primary source of…
A Spitzer/IRS Spectrum of the 2008 Luminous Transient in NGC 300: Connection to Proto-Planetary Nebulae
- Physics
- 2009
We present a Spitzer/IRS low-resolution mid-infrared spectrum (5-14 micron) of the luminous transient discovered in the nearby galaxy NGC 300 in May 2008. The spectrum, obtained three months after…
An analysis of a spectrum of V838 Monocerotis in October 2005
- Physics
- 2009
Context. V838 Mon erupted at the beginning of 2002 becoming an extremely luminous star with $L=10^6~L_{\sun}$. Among various scenarios proposed to explain the nature of the outburst, the most…
On the behaviour of stellar winds that exceed the photon‐tiring limit
- Physics
- 2009
Stars can produce steady-state winds through radiative driving as long as the mechanical luminosity of the wind does not exceed the radiative luminosity at its base. This upper bound on the mass loss…
An alternative symbiotic channel to Type Ia supernovae
- Physics
- 2009
By assuming an aspherical stellar wind with an equatorial disc from a red giant, we investigate the production of Type Ia supernovae (SNe Ia) via a symbiotic channel. We estimate that the Galactic…
References
SHOWING 1-10 OF 54 REFERENCES
Dust formation and inhomogeneous mass-loss from asymptotic giant branch stars
- Physics
- 2000
ABSTRA C T We examine the flow from asymptotic giant branch (AGB) stars when along a small solid angle the optical depth resulting from dust is very large. We consider two types of flows. In the…
Collimated Fast Winds in Wide Binary Progenitors of Planetary Nebulae
- Physics
- 2001
We discuss the formation of planetary nebulae (PNs) having a pair of lobes, or multilobes, in their inner region, surrounded by an elliptical or spherical shell or halo. Both elliptical and bipolar…
Born-Again Protoplanetary Disk around Mira B
- Physics, Geology
- 2007
The Mira AB system is a nearby (~107 pc) example of a wind accreting binary star system. In this class of system, the wind from a mass-losing red giant star (Mira A) is accreted onto a companion…
Magnetic Flares on Asymptotic Giant Branch Stars
- Physics
- 2003
We investigate the consequences of magnetic flares on the surface of asymptotic giant branch (AGB) and similar stars. In contrast to the solar wind, in the winds of AGB stars the gas cooling time is…
BIPOLAR PREPLANETARY NEBULAE: HYDRODYNAMICS OF DUSTY WINDS IN BINARY SYSTEMS. I. FORMATION OF ACCRETION DISKS
- Physics, Geology
- 1998
Mass-losing giant stars and objects in transition to planetary nebulae often display a bipolar symmetry in their outflowing circumstellar envelopes. Here we initiate a detailed study of the…
Probing the mass-loss history of AGB and red supergiant stars from CO rotational line profiles - I. Theoretical model – Mass-loss history unravelled in VY CMa
- Physics
- 2006
Context. Mass loss plays a dominant role in the evolution of low mass stars while they are on the Asymptotic Giant Branch (AGB). The gas and dust ejected during this phase are a major source in the…
Dust formation above cool magnetic spots in evolved stars
- Physics
- 1999
ABSTRA C T We examine the structure of cool magnetic spots in the photospheres of evolved stars, specifically asymptotic giant branch (AGB) stars and R Coronae Borealis (RCB) stars. We find that the…
Stellar structure and mass loss during the early post asymptotic giant branch
- Physics
- 2002
Late asymptotic giant branch (AGB) and early post-AGB stars which are progenitors of planetary nebulae lose mass at extremely high rate, in what is termed a superwind. We show that the existence of…
Bipolar Pre-Planetary Nebulae: Hydrodynamics of Dusty Winds in Binary Systems. II. Morphology of the Circumstellar Envelopes
- Physics
- 1999
We have constructed three-dimensional smoothed particle hydrodynamics models to examine the influence of a detached binary companion on the dusty winds from red giants and asymptotic giant branch…