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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 [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: [email protected]
R. van der Marel
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA email: [email protected]
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Abstract

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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 CloudsLocal Groupgalaxies: kinematics and dynamicsastrometry
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

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van der Marel, R. P. & Sahlmann, J., 2016, ApJL, 832, L23 Google Scholar