Astrophysical Journal Supplement Astrophysical Journal Supplement, American Astronomical Society, 2017, 232 (2), 18 p. ⟨10.3847/1538-4365/aa8221⟩ NASA Astrophysics Data System The Astrophysical Journal Supplement The Astrophysical Journal Supplement, 2017, 232 (2), 18 p. ⟨10.3847/1538-4365/aa8221⟩ The astrophysical journal / Supplement series 232(2), 18 (2017). doi:10.3847/1538-4365/aa8221