FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2912982500> ?p ?o ?g. }

• W2912982500 endingPage "3251" @default.
• W2912982500 startingPage "3239" @default.
• W2912982500 abstract "Recent work revealed that both the helium variation within globular clusters (GCs) and the relative numbers of first- and second-generation stars (1G, 2G) depend on the mass of the host cluster. Precise determination of the internal helium variations and of the fraction of 1G stars are crucial constraints to the formation scenarios of multiple populations (MPs). We exploit multiband Hubble Space Telescope photometry to investigate MPs in NGC 2419, which is one of the most-massive and distant GCs of the Galaxy, almost isolated from its tidal influence. We find that the 1G hosts the ∼37 per cent of the analysed stars, and identified three populations of 2G stars, namely 2GA, 2GB, and 2GC, which comprise the ∼20 per cent, ∼31 per cent, and ∼12 per cent of stars, respectively. We compare the observed colours of these four populations with the colours derived from appropriate synthetic spectra to infer the relative helium abundances. We find that 2GA, 2GB, and 2GC stars are enhanced in helium mass fraction by δY ∼ 0.01, 0.06, and 0.19 with respect to 1G stars that have primordial helium (Y = 0.246). The high He enrichment of 2GC stars is hardly reconcilable with most of the current scenarios for MPs. Furthermore, the relatively larger fraction of 1G stars (∼37 per cent) compared to other massive GCs is noticeable. By exploiting literature results, we find that the fractions of 1G stars of GCs with large perigalactic distance are typically higher than in the other GCs with similar masses. This suggests that NGC 2419, similarly to other distant GCs, lost a lower fraction of 1G stars." @default.
• W2912982500 created "2019-02-21" @default.
• W2912982500 creator A5039499776 @default.
• W2912982500 creator A5042509460 @default.
• W2912982500 creator A5050089650 @default.
• W2912982500 creator A5055725951 @default.
• W2912982500 creator A5083523442 @default.
• W2912982500 creator A5088289899 @default.
• W2912982500 date "2019-05-31" @default.
• W2912982500 modified "2023-10-11" @default.
• W2912982500 title "Four stellar populations and extreme helium variation in the massive outer-halo globular cluster NGC 2419" @default.
• W2912982500 cites W1513825567 @default.
• W2912982500 cites W1841637972 @default.
• W2912982500 cites W1862756473 @default.
• W2912982500 cites W2002691985 @default.
• W2912982500 cites W2002763200 @default.
• W2912982500 cites W2014992560 @default.
• W2912982500 cites W2017559756 @default.
• W2912982500 cites W2020568364 @default.
• W2912982500 cites W2023094757 @default.
• W2912982500 cites W2028713496 @default.
• W2912982500 cites W2030838397 @default.
• W2912982500 cites W2044042419 @default.
• W2912982500 cites W2045159477 @default.
• W2912982500 cites W2066406099 @default.
• W2912982500 cites W2081538426 @default.
• W2912982500 cites W2081944412 @default.
• W2912982500 cites W2099446112 @default.
• W2912982500 cites W2101007900 @default.
• W2912982500 cites W2106695319 @default.
• W2912982500 cites W2129987841 @default.
• W2912982500 cites W2138742840 @default.
• W2912982500 cites W2141201519 @default.
• W2912982500 cites W2141394024 @default.
• W2912982500 cites W2155155328 @default.
• W2912982500 cites W2159752461 @default.
• W2912982500 cites W2165745660 @default.
• W2912982500 cites W2172004087 @default.
• W2912982500 cites W2243459022 @default.
• W2912982500 cites W2268382917 @default.
• W2912982500 cites W2280200570 @default.
• W2912982500 cites W2284959507 @default.
• W2912982500 cites W2293851644 @default.
• W2912982500 cites W2409398603 @default.
• W2912982500 cites W2529747302 @default.
• W2912982500 cites W2604277903 @default.
• W2912982500 cites W2610156111 @default.
• W2912982500 cites W2623313604 @default.
• W2912982500 cites W2783166151 @default.
• W2912982500 cites W2790065076 @default.
• W2912982500 cites W2797453126 @default.
• W2912982500 cites W2798336535 @default.
• W2912982500 cites W2890032903 @default.
• W2912982500 cites W2898868980 @default.
• W2912982500 cites W2911745589 @default.
• W2912982500 cites W3098420954 @default.
• W2912982500 cites W3098562679 @default.
• W2912982500 cites W3099158596 @default.
• W2912982500 cites W3099190669 @default.
• W2912982500 cites W3099354219 @default.
• W2912982500 cites W3099572691 @default.
• W2912982500 cites W3099840315 @default.
• W2912982500 cites W3100009405 @default.
• W2912982500 cites W3100312073 @default.
• W2912982500 cites W3100474202 @default.
• W2912982500 cites W3102379822 @default.
• W2912982500 cites W3104521320 @default.
• W2912982500 cites W3104540755 @default.
• W2912982500 cites W3104777999 @default.
• W2912982500 cites W3104852806 @default.
• W2912982500 cites W3105364762 @default.
• W2912982500 cites W3106381967 @default.
• W2912982500 cites W3121549198 @default.
• W2912982500 cites W3125024839 @default.
• W2912982500 cites W3125247942 @default.
• W2912982500 cites W3125407425 @default.
• W2912982500 cites W4293257153 @default.
• W2912982500 cites W4298830319 @default.
• W2912982500 cites W4299584246 @default.
• W2912982500 doi "https://doi.org/10.1093/mnras/stz1477" @default.
• W2912982500 hasPublicationYear "2019" @default.
• W2912982500 type Work @default.
• W2912982500 sameAs 2912982500 @default.
• W2912982500 citedByCount "31" @default.
• W2912982500 countsByYear W29129825002019 @default.
• W2912982500 countsByYear W29129825002020 @default.
• W2912982500 countsByYear W29129825002021 @default.
• W2912982500 countsByYear W29129825002022 @default.
• W2912982500 countsByYear W29129825002023 @default.
• W2912982500 crossrefType "journal-article" @default.
• W2912982500 hasAuthorship W2912982500A5039499776 @default.
• W2912982500 hasAuthorship W2912982500A5042509460 @default.
• W2912982500 hasAuthorship W2912982500A5050089650 @default.
• W2912982500 hasAuthorship W2912982500A5055725951 @default.
• W2912982500 hasAuthorship W2912982500A5083523442 @default.
• W2912982500 hasAuthorship W2912982500A5088289899 @default.
• W2912982500 hasBestOaLocation W29129825002 @default.
• W2912982500 hasConcept C113461152 @default.

• next