Matches in SemOpenAlex for { <https://semopenalex.org/work/W3101895204> ?p ?o ?g. }
- W3101895204 endingPage "4295" @default.
- W3101895204 startingPage "4282" @default.
- W3101895204 abstract "High-resolution spectra of 123 red giant stars in the globular cluster M13 and 64 red giant stars in M92 were obtained with Hectochelle at the MMT telescope. Emission and line asymmetries in Hα and Ca ii K are identified, characterizing motions in the extended atmospheres and seeking differences attributable to metallicity in these clusters and M15. On the red giant branch, emission in Hα generally appears in stars with Teff ≲ 4500 K and log L/L☉≳ 2.75. Fainter stars showing emission are asymptotic giant branch (AGB) stars or perhaps binary stars. The line-bisector for Hα reveals the onset of chromospheric expansion in stars more luminous than log (L/L☉) ∼ 2.5 in all clusters, and this outflow velocity increases with stellar luminosity. However, the coolest giants in the metal-rich M13 show greatly reduced outflow in Hα most probably due to decreased Teff and changing atmospheric structure. The Ca ii K3 outflow velocities are larger than shown by Hα at the same luminosity and signal accelerating outflows in the chromospheres. Stars clearly on the AGB show faster chromospheric outflows in Hα than RGB objects. While the Hα velocities on the RGB are similar for all metallicities, the AGB stars in the metal-poor M15 and M92 have higher outflow velocities than in the metal-rich M13. Comparison of these chromospheric line profiles in the paired metal-poor clusters, M15 and M92, shows remarkable similarities in the presence of emission and dynamical signatures, and does not reveal a source of the second-parameter effect." @default.
- W3101895204 created "2020-11-23" @default.
- W3101895204 creator A5012101221 @default.
- W3101895204 creator A5070689094 @default.
- W3101895204 creator A5089497818 @default.
- W3101895204 date "2009-04-03" @default.
- W3101895204 modified "2023-09-24" @default.
- W3101895204 title "MASS OUTFLOW AND CHROMOSPHERIC ACTIVITY OF RED GIANT STARS IN GLOBULAR CLUSTERS. II. M13 AND M92" @default.
- W3101895204 cites W1529725299 @default.
- W3101895204 cites W1560234421 @default.
- W3101895204 cites W1618864190 @default.
- W3101895204 cites W1659264257 @default.
- W3101895204 cites W1677064415 @default.
- W3101895204 cites W1964212672 @default.
- W3101895204 cites W1965511223 @default.
- W3101895204 cites W1976031970 @default.
- W3101895204 cites W1979257798 @default.
- W3101895204 cites W1980670359 @default.
- W3101895204 cites W1984158702 @default.
- W3101895204 cites W1988718425 @default.
- W3101895204 cites W1992011937 @default.
- W3101895204 cites W1993852326 @default.
- W3101895204 cites W2007358165 @default.
- W3101895204 cites W2011639865 @default.
- W3101895204 cites W2015885277 @default.
- W3101895204 cites W2020277058 @default.
- W3101895204 cites W2021276567 @default.
- W3101895204 cites W2021535071 @default.
- W3101895204 cites W2025085958 @default.
- W3101895204 cites W2026277813 @default.
- W3101895204 cites W2034907340 @default.
- W3101895204 cites W2039879360 @default.
- W3101895204 cites W2047723860 @default.
- W3101895204 cites W2051879158 @default.
- W3101895204 cites W2052937814 @default.
- W3101895204 cites W2054952427 @default.
- W3101895204 cites W2055047469 @default.
- W3101895204 cites W2059330256 @default.
- W3101895204 cites W2060146884 @default.
- W3101895204 cites W2063030433 @default.
- W3101895204 cites W2063048529 @default.
- W3101895204 cites W2064265818 @default.
- W3101895204 cites W2065557180 @default.
- W3101895204 cites W2066406099 @default.
- W3101895204 cites W2066746846 @default.
- W3101895204 cites W2073123016 @default.
- W3101895204 cites W2074764511 @default.
- W3101895204 cites W2079726546 @default.
- W3101895204 cites W2092972743 @default.
- W3101895204 cites W2094838641 @default.
- W3101895204 cites W2105171002 @default.
- W3101895204 cites W2105841339 @default.
- W3101895204 cites W2106006092 @default.
- W3101895204 cites W2106209676 @default.
- W3101895204 cites W2120922065 @default.
- W3101895204 cites W2134830549 @default.
- W3101895204 cites W2136545760 @default.
- W3101895204 cites W2141394024 @default.
- W3101895204 cites W2142220522 @default.
- W3101895204 cites W2154749975 @default.
- W3101895204 cites W2161928458 @default.
- W3101895204 cites W2173164973 @default.
- W3101895204 cites W2576045835 @default.
- W3101895204 cites W2915987908 @default.
- W3101895204 cites W3102028637 @default.
- W3101895204 cites W3104486120 @default.
- W3101895204 cites W3104719953 @default.
- W3101895204 cites W3105579933 @default.
- W3101895204 cites W3106215669 @default.
- W3101895204 cites W3106373122 @default.
- W3101895204 cites W4255610084 @default.
- W3101895204 cites W4299584246 @default.
- W3101895204 cites W1970126359 @default.
- W3101895204 doi "https://doi.org/10.1088/0004-6256/137/5/4282" @default.
- W3101895204 hasPublicationYear "2009" @default.
- W3101895204 type Work @default.
- W3101895204 sameAs 3101895204 @default.
- W3101895204 citedByCount "23" @default.
- W3101895204 countsByYear W31018952042012 @default.
- W3101895204 countsByYear W31018952042014 @default.
- W3101895204 countsByYear W31018952042015 @default.
- W3101895204 countsByYear W31018952042016 @default.
- W3101895204 countsByYear W31018952042018 @default.
- W3101895204 countsByYear W31018952042019 @default.
- W3101895204 crossrefType "journal-article" @default.
- W3101895204 hasAuthorship W3101895204A5012101221 @default.
- W3101895204 hasAuthorship W3101895204A5070689094 @default.
- W3101895204 hasAuthorship W3101895204A5089497818 @default.
- W3101895204 hasBestOaLocation W31018952041 @default.
- W3101895204 hasConcept C113461152 @default.
- W3101895204 hasConcept C121332964 @default.
- W3101895204 hasConcept C12287442 @default.
- W3101895204 hasConcept C1276947 @default.
- W3101895204 hasConcept C150846664 @default.
- W3101895204 hasConcept C153294291 @default.
- W3101895204 hasConcept C181313176 @default.
- W3101895204 hasConcept C198352243 @default.
- W3101895204 hasConcept C2524010 @default.