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dc.contributor.authorPoovelil, Vijith Jacob
dc.contributor.authorZasowski, G.
dc.contributor.authorHasselquist, S.
dc.contributor.authorSeth, A.
dc.contributor.authorDonor, John
dc.contributor.authorBeaton, Rachael L.
dc.contributor.authorCunha, K.
dc.contributor.authorFrinchaboy, Peter M.
dc.contributor.authorGarcía-Hernández, D. A.
dc.contributor.authorHawkins, K.
dc.contributor.authorKratter, K. M.
dc.contributor.authorLane, Richard R.
dc.contributor.authorNitschelm, C.
dc.date.accessioned2021-02-09T21:50:36Z
dc.date.available2021-02-09T21:50:36Z
dc.date.issued2020-11-02
dc.identifier.citationPoovelil, V. J., Zasowski, G., Hasselquist, S., Seth, A., Donor, J., Beaton, R. L., ... & Nitschelm, C. (2020). Open Cluster Chemical Homogeneity throughout the Milky Way. The Astrophysical Journal, 903(1), 55.en_US
dc.identifier.issn0004-637X
dc.identifier.doi10.3847/1538-4357/abb93e
dc.identifier.urihttp://hdl.handle.net/10150/652197
dc.description.abstractThe chemical homogeneity of surviving stellar clusters contains important clues about interstellar medium (ISM) mixing efficiency, star formation, and the enrichment history of the Galaxy. Existing measurements in a handful of open clusters suggest homogeneity in several elements at the 0.03.dex level. Here we present (i) a new cluster member catalog based only on APOGEE radial velocities and Gaia-DR2 proper motions, (ii) improved abundance uncertainties for APOGEE cluster members, and (iii) the dependence of cluster homogeneity on Galactic and cluster properties, using abundances of eight elements from the APOGEE survey for 10 high-quality clusters. We find that cluster homogeneity is uncorrelated with Galactocentric distance, Z| |, age, and metallicity. However, velocity dispersion, which is a proxy for cluster mass, is positively correlated with intrinsic scatter at relatively high levels of significance for [Ca/Fe] and [Mg/Fe]. We also see a possible positive correlation at a low level of significance for [Ni/Fe], [Si/Fe], [Al/Fe], and [Fe/H], while [Cr/Fe] and [Mn/Fe] are uncorrelated. The elements that show a correlation with velocity dispersion are those that are predominantly produced by core-collapse supernovae (CCSNe). However, the small sample size and relatively low correlation significance highlight the need for follow-up studies. If borne out by future studies, these findings would suggest a quantitative difference between the correlation lengths of elements produced predominantly by Type.Ia SNe versus CCSNe, which would have implications for Galactic chemical evolution models and the feasibility of chemical tagging.en_US
dc.language.isoenen_US
dc.publisherIOP PUBLISHING LTDen_US
dc.rights© 2020. The American Astronomical Society. All rights reserved.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en_US
dc.subjectChemical enrichmenten_US
dc.subjectChemical abundancesen_US
dc.subjectStar clustersen_US
dc.subjectMilky Way evolutionen_US
dc.titleOpen Cluster Chemical Homogeneity throughout the Milky Wayen_US
dc.typeArticleen_US
dc.identifier.eissn1538-4357
dc.contributor.departmentUniv Arizona, Steward Observen_US
dc.contributor.departmentUniv Arizona, Dept Astronen_US
dc.identifier.journalASTROPHYSICAL JOURNALen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleThe Astrophysical Journal
dc.source.volume903
dc.source.issue1
dc.source.beginpage55
refterms.dateFOA2021-02-09T21:50:37Z


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