English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

The GALAH survey: co-orbiting stars and chemical tagging

MPS-Authors

Simpson,  Jeffrey D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Martell,  Sarah L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Da Costa,  Gary
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Casey,  Andrew R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Freeman,  Ken C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Horner,  Jonathan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ting,  Yuan-Sen
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Nataf,  David M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lewis,  Geraint F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ness,  Melissa K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zucker,  Daniel B.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cottrell,  Peter L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Čotar,  Klemen
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Asplund,  Martin
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bland-Hawthorn,  Joss
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Buder,  Sven
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

D'Orazi,  Valentina
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

De Silva,  Gayandhi M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Duong,  Ly
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kos,  Janez
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lin,  Jane
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lind,  Karin
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Schlesinger,  Katharine J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sharma,  Sanjib
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zwitter,  Tomaž
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kafle,  Prajwal R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Nordlander,  Thomas
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2019MNRAS.482.5302S
(Any fulltext)

Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Simpson, J. D., Martell, S. L., Da Costa, G., Casey, A. R., Freeman, K. C., Horner, J., et al. (2019). The GALAH survey: co-orbiting stars and chemical tagging. Monthly Notices of the Royal Astronomical Society, 482, 5302-5315.


Cite as: https://hdl.handle.net/21.11116/0000-0005-CFC0-9
Abstract
We present a study using the second data release of the GALAH survey of stellar parameters and elemental abundances of 15 pairs of stars identified by Oh et al. They identified these pairs as potentially co- moving pairs using proper motions and parallaxes from Gaia DR1. We find that 11 very wide (>1 pc) pairs of stars do in fact have similar Galactic orbits, while a further four claimed co-moving pairs are not truly co-orbiting. Eight of the 11 co-orbiting pairs have reliable stellar parameters and abundances, and we find that three of those are quite similar in their abundance patterns, while five have significant [Fe/H] differences. For the latter, this indicates that they could be co-orbiting because of the general dynamical coldness of the thin disc, or perhaps resonances induced by the Galaxy, rather than a shared formation site. Stars such as these, wide binaries, debris of past star formation episodes, and coincidental co-orbiters, are crucial for exploring the limits of chemical tagging in the Milky Way.