H i IN LOCAL GROUP DWARF GALAXIES AND STRIPPING BY THE GALACTIC HALO

@article{Grcevich2009HII,
  title={H i IN LOCAL GROUP DWARF GALAXIES AND STRIPPING BY THE GALACTIC HALO},
  author={Jana Grcevich and Mary E. Putman},
  journal={The Astrophysical Journal},
  year={2009},
  volume={696},
  pages={385 - 395}
}
We examine the H i content and environment of all of the Local Group dwarf galaxies (Mtot < 1010 M☉), including the numerous newly discovered satellites of the Milky Way and M31. All of the new dwarfs, with the exception of Leo T, have no detected H i. The majority of dwarf galaxies within ∼270 kpc of the Milky Way or Andromeda are undetected in H i (<104 M☉ for Milky Way dwarfs), while those further than ∼270 kpc are predominantly detected with masses ∼105 to 108 M☉. Analytical ram-pressure… 
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References

SHOWING 1-10 OF 96 REFERENCES
Arecibo H i Mapping of a Large Sample of Dwarf Irregular Galaxies
Neutral hydrogen mapping of 70 dwarf irregular (Sm, Im and BCD) galaxies is reported, with position-velocity contour maps presented for those resolved by the Arecibo beam. The galaxies were selected
Gas-Rich Dwarf Spheroidals
We present evidence that 10 of the 21 dwarf spheroidal galaxies (dSph and dSph/dIrr) in the Local Group are associated with large reservoirs of atomic gas, reservoirs that are, in some cases, larger
The absence of H i in the Boötes dwarf spheroidal galaxy
Neutral hydrogen (H I) observations towards the Bootes dwarf spheroidal (dSph) galaxy (here- after Bootes), a very low-luminosity metal-poor Galactic satellite, have been obtained using the Parkes
Fossil Remnants of Reionization in the Halo of the Milky Way
Our recently completed one billion particle Via Lactea II simulation of a Milky Way-sized dark matter halo resolves over 50,000 gravitationally bound clumps orbiting today within the virialized
Fossils of Reionization in the Local Group
We use a combination of high-resolution gas dynamics simulations of high-redshift dwarf galaxies and dissipationless simulations of a Milky Way-sized halo to estimate the expected abundance and
Discovery of an Unusual Dwarf Galaxy in the Outskirts of the Milky Way
We announce the discovery of a new dwarf galaxy, Leo T, in the Local Group. It was found as a stellar overdensity in the Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The color-magnitude
DWARF GALAXIES OF THE LOCAL GROUP
▪ Abstract The Local Group dwarf galaxies offer a unique window to the detailed properties of the most common type of galaxy in the Universe. In this review, I update the census of Local Group dwarfs
Neutral Hydrogen Clouds Near Early-Type Dwarf Galaxies of the Local Group
Parkes neutral hydrogen 21 cm line (H I) observations of the surroundings of nine early-type Local Group dwarfs are presented. We detected numerous H I clouds in the general direction of those
Detection of Neutral Hydrogen in Early-Type Dwarf Galaxies of the Sculptor Group
We present results of deep 21 cm neutral hydrogen (H I) line observations of five early- and mixed-type dwarf galaxies in the nearby Sculptor group using the Australia Telescope National Facility 64
A common mass scale for satellite galaxies of the Milky Way
TLDR
New measurements of the velocities of the stars in these galaxies are used to show that they are consistent with them having a common mass of about 107 within their central 300 parsecs, demonstrating that the faintest of the Milky Way satellites are the most dark-matter-dominated galaxies known.
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