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Discovery of a thin stellar stream in the SLAMS survey

Jethwa, P, Torrealba, G, Navarrete, C, Carballo-Bello, J.A., de Boer, Thomas, Erkal, Denis, Koposov, S.E., Duffau, S, Geisler, D, Catelan, M and Belokurov, V (2018) Discovery of a thin stellar stream in the SLAMS survey Monthly Notices of the Royal Astronomical Society, 480 (4). pp. 5342-5351.

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Abstract

We report the discovery of a thin stellar stream - which we name the Jet stream - cross- ing the constellations of Hydra and Pyxis. The discovery was made in data from the SLAMS survey, which comprises deep g and r imaging for a 650 square degree region above the Galactic disc performed by the CTIO Blanco + DECam. SLAMS photomet- ric catalogues have been made publicly available. The stream is approximately 0.18 degrees wide and 10 degrees long, though it is truncated by the survey footprint. Its colour-magnitude diagram is consistent with an old, metal-poor stellar population at a heliocentric distance of approximately 29 kpc. We corroborate this measurement by identifying a spatially coincident overdensity of likely blue horizontal branch stars at the same distance. There is no obvious candidate for a surviving stream progenitor.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Jethwa, P
Torrealba, G
Navarrete, C
Carballo-Bello, J.A.
de Boer, Thomast.deboer@surrey.ac.uk
Erkal, Denisd.erkal@surrey.ac.uk
Koposov, S.E.
Duffau, S
Geisler, D
Catelan, M
Belokurov, V
Date : 18 July 2018
DOI : 10.1093/mnras/sty2226
Copyright Disclaimer : Copyright 2018 Royal Astronomical Society. Published by Oxford University Press
Uncontrolled Keywords : Galaxy: halo - stars: general - surveys - catalogues
Depositing User : Melanie Hughes
Date Deposited : 02 Oct 2018 10:36
Last Modified : 05 Dec 2018 14:39
URI: http://epubs.surrey.ac.uk/id/eprint/849481

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