Release 11.12 ("Hergest Ridge")

Gclusters :: Bibliographic item "gc512"

Article ID: gc512
AuthorLardo, C.; Mucciarelli, A.; Bastian, N.
TitleThe iron dispersion of the globular cluster M2, revised
JournalMNRAS, Volume 457, Issue 1, p.51-63
Year of publication2016 (on gclusters from 2016-03-22 11:46:43 )
AbstractM2 has been claimed to possess three distinct stellar components that are enhanced in iron relative to each other. We use equivalent width measurements from 14 red giant branch stars (...) e perform the chemical analysis using three different methods to constrain effective temperatures and surface gravities. When atmospheric parameters are derived spectroscopically, we measure a trimodal metallicity distribution (...) We find that the metallicity distribution from Fe II lines strongly differs from the distribution obtained from Fe I features when photometric gravities are adopted.(...) M2 is composed by a dominant population (around 99 per cent) homogeneous in iron and a minority component (around 1 per cent) enriched in iron with respect to the main cluster population.
TagsNGC 7089

This page has been visited 903 times since March, 14 2013

Query processed at 22:24, 24th September

Top of the page

Home | Parameters | Table 1 | Table 2 | Table 3
Search | Feedback | What's new | Links | Blog