D6D491B5-005F-40D1-9F8E-B43FD80BCE11Astrophysics and Planetary Science at Oxford 2013-16Research GrantST/K00106X/10FA7FA45-02C9-433E-A750-12A20140208FSTFCINCOME_ACTUAL3672785F0338A79-1132-498A-9F12-8AF6ACBB3E76Characterizing stellar halo populations II: the age gradient in blue horizontal-branch starsMonthly Notices of the Royal Astronomical Society7027d521cde09afb3479662df91d6853Das P2016-01-01http://dx.doi.org/10.1093/mnras/stw2167http://dx.doi.org/10.1093/mnras/stw21673Journal Article/Review58c047dbd50113.52915078