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Evidence for gas accretion in galactic disks | | Thijs van der Hulst
; Renzo Sancisi
; | | Date: |
24 Dec 2003 | | Subject: | astro-ph | | Affiliation: | Kapteyn Institute, Groningen), Renzo Sancisi (Osservatorio Astronomico, Bologna | | Abstract: | Studies of the HI in galaxies have clearly shown that subtle details of the HI distribution and kinematics often harbour key information for understanding the structure and evolution of galaxies. Evidence for the accretion of material has grown over the past many years and clear signatures can be found in HI observations of galaxies. We have obtained new detailed and sensitive HI synthesis observations of three nearby galaxies which are suspected of capturing small amounts of HI and show that indeed accretion of small amounts of gas is taking place in these galaxies. This could be the same kind of phenomenon of material infall as observed in the stellar streams in the halo and outer parts of our galaxy and M31 | | Source: | arXiv, astro-ph/0312613 | | Services: | Forum | Review | PDF | Favorites | |
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