Results 21 to 30 of about 3,177,228 (297)
The evolution of red supergiant mass-loss rates [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 The fate of massive stars with initial masses >8M$_\odot$ depends largely on the mass-loss rate (\mdot ) in the end stages of their lives. Red supergiants (RSGs) are the direct progenitors to Type II-P core collapse supernovae (SN), but there is uncertainty regarding the scale and impact of any mass-loss during this phase.
Beasor, ER, Davies, B
openaire +2 more sources
Mass Loss Rates of Three Comets [PDF]
Symposium - International Astronomical Union, 1992 Emission features of C2, C3, CN, and dust in Comets Thiele (1985m), Hartley-Good (1985l), and Giacobini-Zinner (1984e) have been analyzed and their mass loss rates of about 0.5, 1.1, and 0.8 Mg s−1 have been determined.
P.D. Singh +4 more
openaire +1 more source
SN 2009ip: CONSTRAINTS ON THE PROGENITOR MASS-LOSS RATE [PDF]
The Astrophysical Journal, 2013 8 pages, accepted to ...
Ofek, E. O. +6 more
openaire +3 more sources
Galaxies, 2020 Luminous Blue Variables are massive evolved stars, here we introduce this outstanding class of objects. Described are the specific characteristics, the evolutionary state and what they are connected to other phases and types of massive stars. Our current
Kerstin Weis, Dominik J. Bomans
doaj +1 more source
Probing the mass-loss history of AGB and red supergiant stars from CO rotational line profiles - II. CO line survey of evolved stars: derivation of mass-loss rate formulae [PDF]
, 2010 We aim to (1) set up simple and general analytical expressions to estimate mass-loss rates of evolved stars, and (2) from those calculate estimates for the mass-loss rates of asymptotic giant branch (AGB), red supergiant (RSG), and yellow hypergiant ...
A. de Koter +108 more
core +2 more sources
MASS-LOSS RATES OF OH/IR STARS [PDF]
Journal of The Korean Astronomical Society, 2013 We compare mass-loss rates of OH/IR stars obtained from radio observations with those derived from the dust radiative transfer models and IR observations. We collect radio observational data of OH maser and CO line emission sources for a sample of 1533 OH/IR stars listed in Suh & Kwon (2011).
Kyung-Won Suh, Young-Joo Kwon
openaire +1 more source
Constraints on decreases in Eta Carinae's mass loss from 3D hydrodynamic simulations of its binary colliding winds [PDF]
, 2013 Recent work suggests that the mass-loss rate of the primary star (Eta A) in the massive colliding wind binary Eta Carinae dropped by a factor of 2-3 between 1999 and 2010. We present results from large- (r=1545au) and small- (r=155au) domain, 3D smoothed
Corcoran, Michael F. +8 more
core +3 more sources
Constraints on porosity and mass loss in O-star winds from modeling of X-ray emission line profile shapes [PDF]
, 2013 We fit X-ray emission line profiles in high resolution XMM-Newton and Chandra grating spectra of the early O supergiant Zeta Pup with models that include the effects of porosity in the stellar wind.
Cohen, David H. +3 more
core +4 more sources
Guan'gai paishui xuebao, 2022 【Objective】 Sand and gravel mulching is a technology widely used for crop production in the arid regions in northwestern China. Continuous weathering could result in their degradation; the purpose of this paper is to study the effects of wetting-drying ...
AN Wenju +7 more
doaj +1 more source
The mass loss rate of γ Velorum [PDF]
Symposium - International Astronomical Union, 1979 The CIII λ 1909 absorption feature (deepest at V=−1600 Km s−1) in this star, observed by Burton et al (1975) and Johnson (1978), was predicted by Castor and Nussbaumer (1972). It implies a copious flow of CIII ions, because the oscillator strength is only fik = 1.6× 10−7.
openaire +1 more source