Other
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atnf.prop.1701w&link_type=abstract
ATNF proposal C1757, Semester: October, 2008
Other
Extragalactic, Atca
Scientific paper
With sensitive HI observations of a large area around the Andromeda Galaxy (M31) with the Effelsberg telescope and high-resolution observations with the WSRT we could show that M31 is surrounded by a population of high-velocity clouds (HVCs). The observed spatial distribution and HI mass spectrum of the HVCs are in agreement with CDM structure formation simulations by Kravtsov et al. (2004) under the assumption that the clouds are partly primordial, gaseous dark-matter halos and partly remnants of tidal interaction. Our observations demonstrate that HVCs are also present around galaxies other than our Milky Way and that they are tracers of the evolution and accretion history of spiral galaxies in the framework of CDM cosmology. The aim of this proposal is to extend the search for HVCs around other galaxies to the two nearest Sculptor Group spirals, NGC 55 and NGC 300, by mapping a field of 2 degrees in size around both galaxies in HI with the EW352/367 configurations of the ATCA. Our expected HI mass sensitivity of 10^5 solar masses will allow us to uncover the HVC populations around the two galaxies and compare their parameters with the results of CDM structure formation scenarios.
Braun Robert
Koribalski Baerbel
Westmeier Tobias
No associations
LandOfFree
High-velocity clouds in the Sculptor Group: Relics of structure formation? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High-velocity clouds in the Sculptor Group: Relics of structure formation?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-velocity clouds in the Sculptor Group: Relics of structure formation? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-774725