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Proceedings of the International Astronomical Union Proceedings of the International Astronomical Union

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Magellanic Clouds Proper Motion and Rotation with Gaia DR1

Published online by Cambridge University Press:  07 March 2018

J. Sahlmann Open the ORCID record for J. Sahlmann in new tab/window[Opens in a new window]  and
R. van der Marel
J. Sahlmann
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA email: jsahlmann@stsci.edu
R. van der Marel
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA email: jsahlmann@stsci.edu
Corresponding
E-mail address:
jsahlmann@stsci.edu
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Abstract

We used the Gaia data release 1 to study the proper motion fields of the Large and Small Magellanic Clouds (LMC, SMC) on the basis of the Tycho-Gaia Astrometric Solution (van der Marel & Sahlmann 2016). The Gaia LMC and SMC proper motions have similar accuracy and agree to within the uncertainties with existing HST proper motion measurements. Since Gaia probes the young stellar population and uses different methods with different systematics, this provides an external validation of both data sets and their underlying approaches.

Keywords

Magellanic Clouds Local Group galaxies: kinematics and dynamics astrometry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S330: Astrometry and Astrophysics in the Gaia sky , April 2017 , pp. 249 - 250
Copyright
Copyright © International Astronomical Union 2018 

References

Gaia Collaboration, Brown, A. G. A., Vallenari, A., et al. 2016a, A&A, 595, A2 Google Scholar
Gaia Collaboration, Prusti, T., de Bruijne, J. H. J., et al. 2016b, A&A, 595, A1 Google Scholar
Kroupa, P. & Bastian, U., 1997, New Astronomy, 2, 77 CrossRefGoogle Scholar
Lennon, D. J., van der Marel, R. P., Ramos Lerate, M., et al. 2016, ArXiv e-printsGoogle Scholar
van der Marel, R. P. & Kallivayalil, N., 2014, ApJ, 781, 121 CrossRefGoogle Scholar
van der Marel, R. P. & Sahlmann, J., 2016, ApJL, 832, L23 CrossRefGoogle Scholar

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