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The Dearth of Neutral Hydrogen in Galactic Dwarf Spheroidal Galaxies

ASTROPHYSICAL JOURNAL LETTERS, no. 1 (2014)

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We present new upper limits on the neutral hydrogen (HI) content within the stellar half-light ellipses of 15 Galactic dwarf spheroidal galaxies (dSphs), derived from pointed observations with the Green Bank Telescope (GBT) as well as Arecibo L-band Fast ALFA survey and Galactic All-Sky Survey data. All of the limits M-HI(lim) are more st...更多

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