Matches in SemOpenAlex for { <https://semopenalex.org/work/W3105078395> ?p ?o ?g. }
- W3105078395 endingPage "50" @default.
- W3105078395 startingPage "50" @default.
- W3105078395 abstract "We have observed the CN features at ∼3800 and 4120 Å as well as the CH band at ∼4300 Å for 145 evolved stars in the Galactic globular cluster M71 using the multi-object spectrograph, Hydra, on the Wisconsin-Indiana-Yale-NOAO-3.5 m telescope. We use these measurements to create two δCN indices finding that both distributions are best fit by two populations: a CN-enhanced and CN-normal. We find that 42% ± 4% of the red giant branch stars in our sample are CN-enhanced. The percentage of CN-enhanced is 40% ± 13% for the asymptotic giant branch and 33% ± 9% for the horizontal-branch stars (HB stars), which suggests there are no missing second generation stars at these stages of stellar evolution. The two generations also separate in magnitude and color on the HB, which allows us to find the difference in He abundance between the two populations by fitting appropriate zero-age horizontal branches. The broad range of distances from the cluster's center covered by our sample allows us to study the dependence of the ratio of the number of first to second population stars on the distance from the cluster's center, and we find that this ratio does not vary radially and that the two populations are spatially mixed. Finally, we compare our identification of multiple populations with the classification based on the Na–O anti-correlation and the Hubble Space Telescope UV photometry, and we find good agreement with both methods." @default.
- W3105078395 created "2020-11-23" @default.
- W3105078395 creator A5007646878 @default.
- W3105078395 creator A5031968960 @default.
- W3105078395 creator A5089542995 @default.
- W3105078395 date "2020-01-13" @default.
- W3105078395 modified "2023-10-18" @default.
- W3105078395 title "Identifying Multiple Populations in M71 Using CN" @default.
- W3105078395 cites W1555097069 @default.
- W3105078395 cites W1927070518 @default.
- W3105078395 cites W1964340427 @default.
- W3105078395 cites W1976166792 @default.
- W3105078395 cites W1978945304 @default.
- W3105078395 cites W1979257798 @default.
- W3105078395 cites W1981358240 @default.
- W3105078395 cites W2011478974 @default.
- W3105078395 cites W2014958365 @default.
- W3105078395 cites W2014992560 @default.
- W3105078395 cites W2018317158 @default.
- W3105078395 cites W2020277058 @default.
- W3105078395 cites W2022231983 @default.
- W3105078395 cites W2023898590 @default.
- W3105078395 cites W2030838397 @default.
- W3105078395 cites W2031989565 @default.
- W3105078395 cites W2038755076 @default.
- W3105078395 cites W2039779304 @default.
- W3105078395 cites W2043383649 @default.
- W3105078395 cites W2052805228 @default.
- W3105078395 cites W2056071095 @default.
- W3105078395 cites W2056863308 @default.
- W3105078395 cites W2061346396 @default.
- W3105078395 cites W2062087477 @default.
- W3105078395 cites W2066406099 @default.
- W3105078395 cites W2068614211 @default.
- W3105078395 cites W2071285547 @default.
- W3105078395 cites W2072385866 @default.
- W3105078395 cites W2076735446 @default.
- W3105078395 cites W2077218991 @default.
- W3105078395 cites W2081538426 @default.
- W3105078395 cites W2082812622 @default.
- W3105078395 cites W2082833089 @default.
- W3105078395 cites W2087114854 @default.
- W3105078395 cites W2102155954 @default.
- W3105078395 cites W2105973167 @default.
- W3105078395 cites W2111767615 @default.
- W3105078395 cites W2115446991 @default.
- W3105078395 cites W2138742840 @default.
- W3105078395 cites W2142220522 @default.
- W3105078395 cites W2152437300 @default.
- W3105078395 cites W2165745660 @default.
- W3105078395 cites W2165889548 @default.
- W3105078395 cites W2170400824 @default.
- W3105078395 cites W2173164973 @default.
- W3105078395 cites W2229155883 @default.
- W3105078395 cites W2284959507 @default.
- W3105078395 cites W2315031799 @default.
- W3105078395 cites W2322353395 @default.
- W3105078395 cites W2336089742 @default.
- W3105078395 cites W2486321634 @default.
- W3105078395 cites W2529747302 @default.
- W3105078395 cites W2544816028 @default.
- W3105078395 cites W2597993038 @default.
- W3105078395 cites W2616702483 @default.
- W3105078395 cites W2634123174 @default.
- W3105078395 cites W2774363425 @default.
- W3105078395 cites W2783166151 @default.
- W3105078395 cites W2797453126 @default.
- W3105078395 cites W2890032903 @default.
- W3105078395 cites W2979479036 @default.
- W3105078395 cites W3098394697 @default.
- W3105078395 cites W3099085720 @default.
- W3105078395 cites W3099139600 @default.
- W3105078395 cites W3099354219 @default.
- W3105078395 cites W3099749397 @default.
- W3105078395 cites W3099840315 @default.
- W3105078395 cites W3100328470 @default.
- W3105078395 cites W3100392305 @default.
- W3105078395 cites W3100451302 @default.
- W3105078395 cites W3100776214 @default.
- W3105078395 cites W3100928122 @default.
- W3105078395 cites W3101251819 @default.
- W3105078395 cites W3101636513 @default.
- W3105078395 cites W3102379822 @default.
- W3105078395 cites W3102565657 @default.
- W3105078395 cites W3102907435 @default.
- W3105078395 cites W3103617602 @default.
- W3105078395 cites W3104257803 @default.
- W3105078395 cites W3105107009 @default.
- W3105078395 cites W3105157405 @default.
- W3105078395 cites W3105757562 @default.
- W3105078395 cites W3105958326 @default.
- W3105078395 cites W3106128429 @default.
- W3105078395 cites W3121201152 @default.
- W3105078395 cites W3125024839 @default.
- W3105078395 cites W3125247942 @default.
- W3105078395 cites W4292399985 @default.
- W3105078395 cites W4294328556 @default.
- W3105078395 cites W4299304847 @default.