The Arecibo Galaxy Environment Survey – X. The structure of halo gas around M33

@article{Keenan2016TheAG,
  title={The Arecibo Galaxy Environment Survey – X. The structure of halo gas around M33},
  author={Olivia Keenan and Jonathan Ivor Davies and Rhys Taylor and Robert. F. Minchin},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2016},
  volume={456},
  pages={951-960}
}
As part of the H i Arecibo Galaxy Environment Survey (AGES), we have observed 5 × 4 deg of sky centred on M33, reaching a limiting column density of ∼1.5 × 1017 cm−2 (line width of 10 km s−1 and resolution 3.5 arcmin). We particularly investigate the absence of optically detected dwarf galaxies around M33, something that is contrary to galaxy formation models. We identify 22 discrete H i clouds, 11 of which are new detections. The number of objects detected and their internal velocity… 
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TLDR
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References

SHOWING 1-10 OF 33 REFERENCES
The Arecibo Galaxy Environment Survey – IV. The NGC 7448 region and the H i mass function
In this paper we describe results from the Arecibo Galaxy Environments Survey (AGES). The survey reaches column densities of ∼3 × 1018 cm−2 and masses of ∼107 M⊙, over individual regions of order 10
The Arecibo Galaxy Environment Survey: precursor observations of the NGC 628 group
The Arecibo Galaxy Environment Survey (AGES) is one of several H i surveys utilizing the new Arecibo L-band Feed Array (ALFA) fitted to the 305-m radio telescope at Arecibo.† The survey is
The Arecibo Galaxy Environment Survey – VI. The Virgo cluster (II)
We present 21 cm observations of a 5 × 1 degree region in the Virgo cluster, obtained as part of the Arecibo Galaxy Environment Survey. 13 cluster members are detected, together with 36 objects in
The Arecibo Galaxy Environment Survey II: a H I view of the Abell cluster 1367 and its outskirts
We present 21 cm H i line observations of 5 × 1 deg2 centred on the local Abell cluster 1367 obtained as part of the Arecibo Galaxy Environment Survey. One hundred sources are detected (79 new H i
The Arecibo Galaxy Environment Survey - VII. A dense filament with extremely long H I streams
We present completed observations of the NGC 7448 galaxy group and background volume as part of the blind neutral hydrogen Arecibo Galaxy Environment Survey. Our observations cover a region spanning
THE ARECIBO GALAXY ENVIRONMENT SURVEY. III. OBSERVATIONS TOWARD THE GALAXY PAIR NGC 7332/7339 AND THE ISOLATED GALAXY NGC 1156
Two 5 deg2 regions around the NGC 7332/9 galaxy pair and the isolated galaxy NGC 1156 have been mapped in the 21 cm line of neutral hydrogen (H i) with the Arecibo L-band Feed Array out to a redshift
THE DISRUPTION AND FUELING OF M33
The disruption of the M33 galaxy is evident from its extended gaseous structure. We present new data from the Galactic Arecibo L-Band Feed Array H i (GALFA-H i) Survey that show the full extent and
H I clouds in the proximity of M 33
Aims. Neutral hydrogen clouds are found in the Milky Way and Andromeda halo both as large complexes and smaller isolated clouds. Here we present a search for Hi clouds in the halo of M 33, the third
Westerbork H I observations of high-velocity clouds near M 31 and M 33
We have undertaken high-resolution follow-up of a sample of high velocity H  clouds apparently associated with M 31. Our sample was chosen from the population of high-velocity clouds (HVCs) detected
Stellar structures in the outer regions of M33
We present Subaru/Suprime-Cam deep V and I imaging of seven fields in the outer regions of M33. Our aim is to search for stellar structures corresponding to extended HI clouds found in a recent 21-cm
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