EVIDENCE OF FANNING IN THE OPHIUCHUS STREAM

ABSTRACT The Ophiuchus stellar stream presents a dynamical puzzle: its old stellar populations (∼12 Gyr) cannot be reconciled with (1) its orbit in a simple model for the Milky Way potential and (2) its short angular extent, both of which imply that the observed stream formed within the last . Recen...

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Veröffentlicht in:	Astrophysical journal. Letters 2016-01, Vol.816 (1), p.1-4
Hauptverfasser:	Sesar, Branimir, Price-Whelan, Adrian M., Cohen, Judith G., Rix, Hans-Walter, Pearson, Sarah, Johnston, Kathryn V., Bernard, Edouard J., Ferguson, Annette M. N., Martin, Nicolas F., Slater, Colin T., Chambers, Kenneth C., Flewelling, Heather, Wainscoat, Richard J., Waters, Christopher
Format:	Artikel
Sprache:	eng
Schlagworte:	Chaos theory Extrapolation Galaxy: halo Galaxy: kinematics and dynamics Galaxy: structure globular clusters: general Horizontal branch stars Sciences of the Universe Stands Stars Stellar age Stellar populations Streams
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