Results 231 to 240 of about 412,693 (262)
Some of the next articles are maybe not open access.
Stellar Mass Loss by Turbulent Alfvén Waves
1988In the present study, we analyze the effect of the change in the opening angle of the magnetic field on mass loss and terminal velocity of the “typical” K5 supergiant (Model 6 of Hartmann and MacGregor (1980)). We use a flux of turbulent Alfven waves as the acceleration mechanism of the wind, with non-linear and surface Alfven wave absorption.
Reuven Opher, Vera J. S. Pereira
openaire +1 more source
Stellar pulsation, atmospheric structure, and mass loss
2008Pulsation in one or many radial and/or non-radial modes may be a universal characteristic of stars. The possible consequences of pulsation include an increase in the atmospheric scale height (“levitation”), the heating of a region of the atmosphere to a temperature well in excess of the radiative equilibrium temperatur, and the driving of substantial ...
L. A. Willson, G. H. Bowen
openaire +1 more source
Interstellar isotopic ratios, stellar mass losses and galactic evolution
2008A study of presently available data shows that the 12C/13C ratio in the interstellar matter is about 40, rather than 89 as in the solar system, which has the isotopic composition of the interstellar matter 4.6 X 109 years ago. Mass loss by evolved stars and possibly novae is responsible for relative enrichment in 13C.
Audouze, J., Lequeux, J.
openaire +2 more sources
Mass loss in early stages of stellar evolution
Nature, 1976IT has been known for some time that stars lose mass between their birth on the main sequence and their death as white dwarfs (or as neutron stars or black holes for more massive stars), and the existence of the solar wind shows that not all the mass loss occurs in a last gasp to form a planetary nebula.
D. S. P. DEARBORN +2 more
openaire +1 more source
Pre-main sequence stellar evolution with mass loss
Astrophysics and Space Science, 1971Pre-main sequence /T Tauri/ stellar evolution, discussing mass loss rates and star formation by interstellar cloud violent hydrodynamic ...
Dilhan Ezer, A. G. W. Cameron
openaire +1 more source
Mechanisms of Solar (and Stellar) Mass Loss
1996The fundamental theory for mass loss from late-type stars such as our Sun was developed by Gene Parker in the 1950’s (Parker 1958), and has been largely understood since then; refinements since then have largely focused on physically more realistic fluid equations (which take into account, for example, the effects of multi-component fluids and ...
openaire +1 more source
Stellar mass loss in late B type supergiants
Vistas in Astronomy, 1991A study using archive IUE data of time-varying mass loss has been carried out for a sample of 12 supergiants in the spectral range B5–B9. Additionally dedicated IUE velocity-time observations of ‘discrete absorption components’ (DAC) in the UV resonance lines have been made for one of the stars (βOri), while optical data obtained for this star shows ...
openaire +1 more source
Effects of Mass Loss on Stellar Evolution
1981Session I - Winds From Early Type Stars: Observations.- Observations of stellar winds in early type stars (invited lecture).- The dependence of mass loss on the basic stellar parameters. (invited paper).- The velocity characteristics of WR stellar winds.- The iron curtain of the WC 9 star HD 164270..- Is a stellar wind inherent in WR-stars throughout ...
openaire +1 more source
Antibiotic resistance in the patient with cancer: Escalating challenges and paths forward
Ca-A Cancer Journal for Clinicians, 2021Amila K Nanayakkara +2 more
exaly