Limits on the H I content of the dwarf galaxy Hydra II

Autor:	Aditya Togi, Kurt Plarre, Felix J. Lockman, Nau Raj Pokhrel, Andrew Janzen, Rodolfo Montez, Eve M. Klopf, Mehrnoush Zomederis, R. Selina
Rok vydání:	2015
Předmět:	Physics Milky Way Green Bank Telescope FOS: Physical sciences Local Group Astronomy and Astrophysics Astrophysics Astrophysics - Astrophysics of Galaxies Luminosity Galactic halo Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Magellanic Stream Lernaean Hydra Dwarf galaxy
Zdroj:	Astronomy & Astrophysics. 584:A101
ISSN:	1432-0746 0004-6361
DOI:	10.1051/0004-6361/201527332
Popis:	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. Accepted for publication in Astronomy & Astrophysics
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ad493d1f8aefb67a99a7249ebc197ed https://doi.org/10.1051/0004-6361/201527332 Zobrazit plný text záznamu