Open AccessWhat can be deduced from open cluster metallicity measurements?
Author(s) -
Koen Chris,
Lombard Fred
Publication year - 2007
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2007.12452.x
Subject(s) - physics , metallicity , galactic plane , astrophysics , open cluster , cluster (spacecraft) , plane (geometry) , perpendicular , astronomy , galaxy , geometry , stars , computer science , programming language , mathematics
The dependence of [Fe/H] on galactocentric distance, distance from the galactic mid‐plane and age is studied. Both ordinary least‐squares and non‐parametric regression in the form of a ‘generalized additive model’ are used. The radial metallicity slope is found to be shallower than previously claimed in the literature, and there is a significant abundance gradient perpendicular to the galactic plane. There may be a tendency for metallicity to increase with cluster age.