The Open Cluster Chemical Abundances and Mapping Survey. II. Precision Cluster Abundances for APOGEE Using SDSS DR14

The Open Cluster Chemical Abundances and Mapping Survey. II. Precision Cluster Abundances for APOGEE Using SDSS DR14

The Open Cluster Chemical Abundances and Mapping (OCCAM) survey aims to produce a comprehensive, uniform, infrared-based spectroscopic data set for hundreds of open clusters, and to constrain key Galactic dynamical and chemical parameters from this sample. This second contribution from the OCCAM sur...

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Bibliographic Details
Published in:The Astronomical journal 2018-10, Vol.156 (4), p.142
Main Authors: Donor, John, Frinchaboy, Peter M., Cunha, Katia, Thompson, Benjamin, O'Connell, Julia, Zasowski, Gail, Jackson, Kelly M., McGrath, Brianne Meyer, Almeida, Andrés, Bizyaev, Dmitry, Carrera, Ricardo, García-Hernández, D. A., Nitschelm, Christian, Pan, Kaike, Zamora, Olga
Format: Article
Language:eng
Subjects:
Abundance
Astronomy
Cluster analysis
Galactic clusters
Galactic evolution
Galaxy: abundances
Galaxy: disk
Galaxy: evolution
Globular clusters
Iron
Manganese
Mapping
Nickel
Open clusters
open clusters and associations: general
Organic chemistry
Sky surveys (astronomy)
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Summary:The Open Cluster Chemical Abundances and Mapping (OCCAM) survey aims to produce a comprehensive, uniform, infrared-based spectroscopic data set for hundreds of open clusters, and to constrain key Galactic dynamical and chemical parameters from this sample. This second contribution from the OCCAM survey presents analysis of 259 member stars with [Fe/H] determinations in 19 open clusters, using Sloan Digital Sky Survey Data Release 14 (SDSS/DR14) data from the Apache Point Observatory Galactic Evolution Experiment and ESA Gaia. This analysis, which includes clusters with RGC ranging from 7 to 13 kpc, measures an [Fe/H] gradient of −0.061 0.004 dex kpc−1. We also confirm evidence of a significant positive gradient in the -elements ([O/Fe], [Mg/Fe], and [Si/Fe]) and present evidence for a significant negative gradient in iron-peak elements ([Mn/Fe] and [Ni/Fe]).
ISSN:0004-6256
1538-3881