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Systematics in virial mass estimators for pressure-supported systems

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http://adsabs.harvard.edu/abs/2018arXiv180500484E
Original languageEnglish
JournalMonthly Notices of the Royal Astronomical Society
DOIs
StatePublished - 14 Sep 2018

Abstract

Mass estimators are a key tool to infer the distribution of dark matter in pressure-supported systems like dwarf spheroidal galaxies (dSphs). We construct an estimator for enclosed masses based on the virial theorem which is insensitive to anisotropy in the velocity dispersion and tailored to yield masses with minimum uncertainty introduced by our ignorance on (i) the shape of the inner halo profile, and (ii) how deeply the stellar component is embedded within the halo: $M(

    Research areas

  • Astrophysics - Astrophysics of Galaxies

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