{ "id": "1511.05069", "version": "v1", "published": "2015-11-16T18:04:46.000Z", "updated": "2015-11-16T18:04:46.000Z", "title": "Limits on the HI content of the dwarf galaxy Hydra II", "authors": [ "Andrew Janzen", "Eve M. Klopf", "Felix J. Lockman", "Rodolfo Montez Jr", "Kurt Plarre", "Nau Raj Pokhrel", "Robert J. Selina", "A. Togi", "Mehrnoush Zomederis" ], "comment": "Accepted for publication in Astronomy & Astrophysics", "categories": [ "astro-ph.GA" ], "abstract": "Sensitive 21cm HI observations have been made with the Green Bank Telescope toward the newly-discovered Local Group dwarf galaxy Hydra II, which may lie within the leading arm of the Magellanic Stream. No neutral hydrogen was detected. Our 5-sigma limit of MHI < 210 solar masses for a 15 km/s linewidth gives a gas-to-luminosity ratio MHI/L_V < 2.6 x 10^{-2} Mo / Lo. The limits on HI mass and MHI/L_V are typical of dwarf galaxies found within a few hundred kpc of the Milky Way. Whatever the origin of Hydra II, its neutral gas properties are not unusual.", "revisions": [ { "version": "v1", "updated": "2015-11-16T18:04:46.000Z" } ], "analyses": { "keywords": [ "hi content", "local group dwarf galaxy hydra", "newly-discovered local group dwarf galaxy", "neutral gas properties", "green bank telescope" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }