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2015

What can Gaia proper motions tell us about Milky Way dwarf galaxies?

Jin, Shoko, Helmi, Amina, Breddels, Maarten

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We present a proper-motion study on models of the dwarf spheroidal galaxy Sculptor, based on the predicted proper-motion accuracy of Gaia measurements.

Gaia will measure proper motions of several hundreds of stars for a Sculptor-like system.
Even with an uncertainty on the proper motion of order 1.5 times the size of an individual proper-motion value of ~10 mas/century, we find that it is possible to recover Sculptor's systemic proper motion at its distance of 79 kpc.

What can Gaia proper motions tell us about Milky Way dwarf galaxies? · Around

Built on

Mateo, M. L. 1998, ARA&A 36, 435
1998
Earlier work this paper cites.
Piatek, S., Pryor, C., Bristow, P., Olszewski, E. W., Harris, H. C., Mateo, M., Minniti, D. and Tinney, C. G. 2006, AJ 131, 1445
2006
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Similar

Battaglia, G. 2007, PhD thesis
2007
Cited alongside, same era.
Battaglia, G., Helmi, A., Tolstoy, E., Irwin, M., Hill, V. and Jablonka, P. 2008, ApJL 681, L13
2008
Cited alongside, same era.

Then

Walker, M. G., Mateo, M. and Olszewski, E. W. 2008, ApJL 688, L75
2008
Later among the works it cites.
Breddels, M. A., Helmi, A., van den Bosch, R. C. E., van de Ven, G. and Battaglia, G. 2013, MNRAS 433, 3173
2013
Later among the works it cites.

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