Tidal Streams and Low Mass Companions of M31
| dc.creator | Braun, Robert | |
| dc.creator | Thilker, David | |
| dc.date | 2003-12-04 | |
| dc.date.accessioned | 2026-07-25T19:12:28Z | |
| dc.description | We have imaged the extended HI environment of M31 with an unprecedented combination of high resolution and sensitivity. We detect a number of distinct High Velocity Cloud components associated with M31. A sub-set of the features within 30 kpc appear to be tidal in origin. A filamentary ``halo'' component is concentrated at the M31 systemic velocity and appears to extend into a ``bridge'' connecting M31 and M33. This may represent condensation in coronal gas. A population of discrete clouds is detected out to radii of about 150 kpc. Discrete cloud line-widths are correlated with HI mass and are consistent with a 100:1 ratio of dark to HI mass. These may be the gaseous counterparts of low-mass dark-matter satellites. The combined distribution of M31's HVC components can be characterized by a spatial Gaussian of 55 kpc dispersion and yields an N_HI distribution function which agrees well with that of low red-shift QSOs. | |
| dc.description | 10 pages, 8 figures, to appear in "Satellites and Tidal Streams", eds. Prada, Martinez-Delgado | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0312115 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0312115 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/62496 | |
| dc.subject | Astrophysics | |
| dc.title | Tidal Streams and Low Mass Companions of M31 | |
| dc.type | text |