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  1. OA@INAF
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  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
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Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/29613
Title: Phase-space Correlation in Stellar Streams of the Milky Way Halo: The Clash of Kshir and GD-1
Authors: Malhan, Khyati
Ibata, Rodrigo A.
Carlberg, Raymond G.
BELLAZZINI, Michele 
Famaey, Benoit
Martin, Nicolas F.
Issue Date: 2019
Journal: THE ASTROPHYSICAL JOURNAL LETTERS 
Number: 886
Issue: 1
First Page: L7
Abstract: We report the discovery of a 70^\circ long stellar stream in the Milky Way halo, which criss-crosses the well known “GD-1” stream. We show that this new stellar structure (“Kshir”) and GD-1 lie at similar distance, and are remarkably correlated in kinematics. We propose several explanations for the nature of this new structure and its possible association with GD-1. However, a scenario in which these two streams were accreted onto the Milky Way within the same dark matter sub-halo seems to provide a natural explanation for their phase-space entanglement, and other complexities of this coupled system. <P />Based on observations obtained at the Canada─France─Hawaii Telescope (CFHT), which is operated by the National Research Council of Canada, the Institut National des Sciences de l’Univers of the Centre National de la Recherche Scientique of France, and the University of Hawaii.
URI: http://hdl.handle.net/20.500.12386/29613
URL: https://iopscience.iop.org/article/10.3847/2041-8213/ab530e
ISSN: 2041-8205
DOI: 10.3847/2041-8213/ab530e
Bibcode ADS: 2019ApJ...886L...7M
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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