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- W2068543236 abstract "Spectra of the He I 10830 Angstrom line were obtained with NIRSPEC on the Keck 2 telescope for metal-deficient field giant stars. This line is ubiquitous in stars with T_eff greater than 4500K and M_V fainter than -1.5. Fast outflows are detected from the majority of stars and about 40 percent of the outflows have sufficient speed to allow escape of material from the star as well as from a globular cluster. Outflow speeds and line strengths do not depend on metallicity suggesting the driving mechanism for these winds derives from magnetic and/or hydrodynamic processes. Gas outflows are present in every luminous giant, but are not detected in all stars of lower luminosity indicating possible variability. Mass loss rates ranging from 3X10(-10) to 6X10(-8) solar mass/yr estimated from the Sobolev approximation represent values with evolutionary significance for red giant branch (RGB) and red horizontal branch (RHB) stars. We estimate that 0.2 M_sun will be lost on the RGB, and the torque of this wind can account for observations of slowly rotating RHB stars in the field. About 0.1-0.2 M_sun will be lost on the RHB itself. This first empirical determination of mass loss on the RHB may contribute to the appearance of extended horizontal branches in globular clusters. The spectra appear to resolve the problem of missing intracluster material in globular clusters. Opportunities exist for 'wind smothering' of dwarf stars by winds from the evolved population, possibly leading to surface pollution in regions of high stellar density." @default.
- W2068543236 created "2016-06-24" @default.
- W2068543236 creator A5014567632 @default.
- W2068543236 creator A5059423955 @default.
- W2068543236 creator A5089497818 @default.
- W2068543236 date "2009-10-13" @default.
- W2068543236 modified "2023-10-13" @default.
- W2068543236 title "FAST WINDS AND MASS LOSS FROM METAL-POOR FIELD GIANTS" @default.
- W2068543236 cites W1569770133 @default.
- W2068543236 cites W1577858873 @default.
- W2068543236 cites W1677064415 @default.
- W2068543236 cites W1753916054 @default.
- W2068543236 cites W1964185568 @default.
- W2068543236 cites W1966438779 @default.
- W2068543236 cites W1966487744 @default.
- W2068543236 cites W1967911932 @default.
- W2068543236 cites W1969295471 @default.
- W2068543236 cites W1972366022 @default.
- W2068543236 cites W1972606006 @default.
- W2068543236 cites W1973343771 @default.
- W2068543236 cites W1973915926 @default.
- W2068543236 cites W1977203552 @default.
- W2068543236 cites W1979257798 @default.
- W2068543236 cites W1979459280 @default.
- W2068543236 cites W1980129482 @default.
- W2068543236 cites W1983670115 @default.
- W2068543236 cites W1985236417 @default.
- W2068543236 cites W1985784904 @default.
- W2068543236 cites W1987606611 @default.
- W2068543236 cites W1988718425 @default.
- W2068543236 cites W1989201845 @default.
- W2068543236 cites W1991094176 @default.
- W2068543236 cites W1992011937 @default.
- W2068543236 cites W1992885010 @default.
- W2068543236 cites W1993219169 @default.
- W2068543236 cites W1993852326 @default.
- W2068543236 cites W1994727621 @default.
- W2068543236 cites W1996131866 @default.
- W2068543236 cites W2007187768 @default.
- W2068543236 cites W2011308688 @default.
- W2068543236 cites W2011639865 @default.
- W2068543236 cites W2012853668 @default.
- W2068543236 cites W2015885277 @default.
- W2068543236 cites W2015907991 @default.
- W2068543236 cites W2017886612 @default.
- W2068543236 cites W2021276567 @default.
- W2068543236 cites W2021535071 @default.
- W2068543236 cites W2024978327 @default.
- W2068543236 cites W2025806659 @default.
- W2068543236 cites W2027645770 @default.
- W2068543236 cites W2029733876 @default.
- W2068543236 cites W2030565079 @default.
- W2068543236 cites W2032922883 @default.
- W2068543236 cites W2034907340 @default.
- W2068543236 cites W2036508225 @default.
- W2068543236 cites W2044042419 @default.
- W2068543236 cites W2044418768 @default.
- W2068543236 cites W2047723860 @default.
- W2068543236 cites W2049822747 @default.
- W2068543236 cites W2052495438 @default.
- W2068543236 cites W2054952427 @default.
- W2068543236 cites W2055653834 @default.
- W2068543236 cites W2059330256 @default.
- W2068543236 cites W2062318548 @default.
- W2068543236 cites W2063030433 @default.
- W2068543236 cites W2065785824 @default.
- W2068543236 cites W2066406099 @default.
- W2068543236 cites W2066746846 @default.
- W2068543236 cites W2068017716 @default.
- W2068543236 cites W2069309921 @default.
- W2068543236 cites W2073332494 @default.
- W2068543236 cites W2076428741 @default.
- W2068543236 cites W2077008441 @default.
- W2068543236 cites W2079726546 @default.
- W2068543236 cites W2080690523 @default.
- W2068543236 cites W2082127265 @default.
- W2068543236 cites W2084635662 @default.
- W2068543236 cites W2087877919 @default.
- W2068543236 cites W2089176407 @default.
- W2068543236 cites W2091948270 @default.
- W2068543236 cites W2092972743 @default.
- W2068543236 cites W2093813575 @default.
- W2068543236 cites W2094838641 @default.
- W2068543236 cites W2106006092 @default.
- W2068543236 cites W2119187754 @default.
- W2068543236 cites W2122555548 @default.
- W2068543236 cites W2134770831 @default.
- W2068543236 cites W2134830549 @default.
- W2068543236 cites W2137214248 @default.
- W2068543236 cites W2141542954 @default.
- W2068543236 cites W2153917897 @default.
- W2068543236 cites W2154749975 @default.
- W2068543236 cites W2161928458 @default.
- W2068543236 cites W2163677272 @default.
- W2068543236 cites W2171625363 @default.
- W2068543236 cites W3035655882 @default.
- W2068543236 cites W3098283280 @default.
- W2068543236 cites W3099819036 @default.