@article{1c518acc2c484064bec2ee5060d4cc39,
title = "Exposing sgr tidal debris behind the galactic disc with M giants selected in WISE∩2MASS",
abstract = "We show that a combination of infrared photometry from WISE and 2MASS surveys can yield highly pure samples of M giant stars. We take advantage of the new WISEn2MASS M giant selection to trace the Sagittarius (Sgr) trailing tail behind the Galactic disc in the direction of the anticentre. The M giant candidates selected via broad-band photometry are confirmed spectroscopically using AAOmega on the Anglo-Australian Telescope in three fields around the extremity of the Sgr trailing tail in the Southern Galactic hemisphere.We demonstrate that at the Sgr longitude (n-ary logical and) ⊙ = 204°, the line-of-sight velocities of the trailing tail starts to deviate from the track of the Law & Majewski model, confirming the prediction of Belokurov et al. This discovery serves to substantiate the measurement of low differential orbital precession of the Sgr stream which in turn may imply diminished dark matter content within 100 kpc.",
keywords = "Galaxies: Dwarf, Galaxies: Kinematics and dynamics, Galaxy: Halo, Galaxy: Kinematics and dynamics, Stars: General, Stars: Kinematics and dynamics",
author = "Koposov, {S. E.} and V. Belokurov and Zucker, {D. B.} and Lewis, {G. F.} and Ibata, {R. A.} and Olszewski, {E. W.} and Loṕez-Sa{\'n}chez, {A. R.} and Hyde, {E. A.}",
note = "Funding Information: The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013)/ERC GrantAgreement no. 308024. VB acknowledges financial support from the Royal Society. SK acknowledges financial support from the STFC and the ERC. EO acknowledges support from NSF grant AST-1313006. DBZ acknowledges the financial support of the Australian Research Council. This work has made use of the Q3C open source plugin for POSTGRESQL data base (Koposov & Bartunov 2006), ASTROPY software (Astropy Collaboration et al. 2013), MATPLOTLIB software (Hunter 2007).We also thank the anonymous referee for comments which helped us to improve the paper. Funding Information: The research leading to these results has received funding from the European Research Council under the European Union{\textquoteright}s Seventh Framework Programme (FP/2007-2013)/ERC Grant Agreement no. 308024. VB acknowledges financial support from the Royal Society. SK acknowledges financial support from the STFC and the ERC. EO acknowledges support from NSF grant AST-1313006. DBZ acknowledges the financial support of the Australian Research Council. This work has made use of the Q3C open source plugin for POSTGRESQL data base (Koposov & Bartunov 2006), ASTROPY software (Astropy Collaboration et al. 2013), MATPLOTLIB software (Hunter 2007). We also thank the anonymous referee for comments which helped us to improve the paper. Publisher Copyright: {\textcopyright} 2014 The Authors.",
year = "2015",
doi = "10.1093/mnras/stu2263",
language = "English (US)",
volume = "446",
pages = "3110--3117",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "3",
}