Results 41 to 50 of about 4,507,065 (293)

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]

open access: yes, 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

On the reliability of mass-loss-rate estimates for AGB stars

open access: yes, 2008
In the recent literature there has been some doubt as to the reliability of CO multi-transitional line observations as a mass-loss-rate estimator for AGB stars.
A. A. Lundgren   +87 more
core   +1 more source

Mass-Loss from Spinning Stars [PDF]

open access: yesHighlights of Astronomy, 1980
AbstractThe effects of mass-loss and angular momentum loss on the evolution of massive stars are discussed bringing out the main results as well as the limitations of recent studies. It is pointed out that an acceptable theory of stellar winds in early as well as late type stars is needed as well as a satisfactory assessment of a number of ...
openaire   +1 more source

Classical Cepheids Require Enhanced Mass Loss

open access: yes, 2012
Measurements of rates of period change of Classical Cepheids probe stellar physics and evolution. Additionally, better understanding of Cepheid structure and evolution provides greater insight into their use as standard candles and tools for measuring ...
Engle, Scott G.   +4 more
core   +1 more source

Prevalence and Trajectory of Household Material Hardship Among Children With Advanced Cancer

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Families of children with advanced cancer living in poverty experience inferior outcomes including poor parent mental health and worse child quality of life. Household material hardship (HMH: food, housing, transportation, and/or utility insecurity) is a modifiable poverty exposure—and potential intervention target—that ...
Sarah Wright   +13 more
wiley   +1 more source

Effects of Cold Storage Insulation Packaging Box on the Quality of Sweet Corn in Simulated Cold Chain Transportation

open access: yesShipin gongye ke-ji
Sweet corn was highly susceptible to senescence due to its elevated physiological metabolism after harvest, resulting in a decline in its edible quality.
Minmin SUN   +5 more
doaj   +1 more source

Long-Term and Inter-annual Mass Changes in the Iceland Ice Cap Determined From GRACE Gravity Using Slepian Functions

open access: yesFrontiers in Earth Science, 2019
The Gravity Recovery and Climate Experiment (GRACE) satellites have measured anomalies in the Earth's time-variable gravity field since 2002, allowing for the measurement of the melting of glaciers due to climate change.
Max von Hippel, Christopher Harig
doaj   +1 more source

Global hot-star wind models for stars from Magellanic Clouds

open access: yes, 2017
We provide mass-loss rate predictions for O stars from Large and Small Magellanic Clouds. We calculate global (unified, hydrodynamic) model atmospheres of main sequence, giant, and supergiant stars for chemical composition corresponding to Magellanic ...
Krticka, Jiri, Kubat, Jiri
core   +1 more source

Financial Burden Associated With Hospitalisation Among Families of Childhood Brain Tumours in Australia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim   +8 more
wiley   +1 more source

The transition mass-loss rate: Calibrating the role of line-driven winds in massive star evolution

open access: yes, 2012
A debate has arisen regarding the importance of stationary versus eruptive mass loss for massive star evolution. The reason is that stellar winds have been found to be clumped, which results in the reduction of unclumped empirical mass-loss rates.
Gräfener, Götz, Vink, Jorick S.
core   +1 more source

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