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The GALAH survey and Gaia DR2: (non-)existence of five sparse high-latitude open clusters

Sparse open clusters can be found at high galactic latitudes where loosely populated clusters are more easily detected against the lower stellar background. Because most star formation takes place in the thin disc, the observed population of clusters far from the Galactic plane is hard to explain.We...

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Main Authors: Kos, Janez (Author) , de Silva, Gayandhi (Author) , Buder, Sven (Author) , Bland-Hawthorn, Joss (Author) , Sharma, Sanjib (Author) , Asplund, Martin (Author) , D’Orazi, Valentina (Author) , Duong, Ly (Author) , Freeman, Ken (Author) , Lewis, Geraint F. (Author) , Lin, Jane (Author) , Lind, Karin (Author) , Martell, Sarah L. (Author) , Schlesinger, Katharine J. (Author) , Simpson, Jeffrey D. (Author) , Zucker, Daniel B. (Author) , Zwitter, Tomaž (Author) , Bedding, Timothy R. (Author) , Čotar, Klemen (Author) , Horner, Jonathan (Author) , Nordlander, Thomas (Author) , Stello, Denis (Author) , Ting, Yuan-Sen (Author) , Traven, Gregor (Author)
Format: Article (Journal)
Language:English
Published: 2018 August 13
In: Monthly notices of the Royal Astronomical Society
Year: 2018, Volume: 480, Issue: 4, Pages: 5242-5259
ISSN:1365-2966
DOI:10.1093/mnras/sty2171
Online Access:Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1093/mnras/sty2171
Verlag, lizenzpflichtig, Volltext: https://academic.oup.com/mnras/article/480/4/5242/5071959
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Author Notes:Janez Kos, Gayandhi de Silva, Sven Buder, Joss Bland-Hawthorn, Sanjib Sharma, Martin Asplund, Valentina D’Orazi, Ly Duong, Ken Freeman, Geraint F. Lewis, Jane Lin, Karin Lind, Sarah L. Martell, Katharine J. Schlesinger, Jeffrey D. Simpson, Daniel B. Zucker, Tomaž Zwitter, Timothy R. Bedding, Klemen Čotar, Jonathan Horner, Thomas Nordlander, Denis Stello, Yuan-Sen Ting and Gregor Traven
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Summary:Sparse open clusters can be found at high galactic latitudes where loosely populated clusters are more easily detected against the lower stellar background. Because most star formation takes place in the thin disc, the observed population of clusters far from the Galactic plane is hard to explain.We combined spectral parameters from the GALAH survey with the Gaia DR2 catalogue to study the dynamics and chemistry of five old sparse high-latitude clusters in more detail.
Item Description:Gesehen am 16.04.2020
Physical Description:Online Resource
ISSN:1365-2966
DOI:10.1093/mnras/sty2171

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