Bibcode
Serra, P.; Morganti, R.; Oosterloo, T.; Alatalo, K.; Blitz, L.; Bois, M.; van den Bosch, R.; Bournaud, F.; Bureau, M.; Cappellary, M.; Davies, R.; Davis, T.; Duc, P. A.; Emsellem, E.; Falcon-Barroso, J.; Khochfar, S.; Krajnovic, D.; Kuntschner, H.; Lablanche, P. Y.; McDermid, R.; Naab, T.; Sarzi, M.; Scott, N.; van de Ven, G.; Weijmans, A. M.; Young, L.; de Zeeuw, T.
Bibliographical reference
"Proceedings of Panoramic Radio Astronomy: Wide-field 1-2 GHz research on galaxy evolution. June 2-5 2009. Groningen, the Netherlands. Edited by G. Heald and P. Serra. Published online at http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=89, id.56"
Advertised on:
0
2009
Citations
2
Refereed citations
2
Description
We present a preliminary analysis of the HI properties of early-type
galaxies in the ATLAS3D sample. Using WSRT data for ~100 galaxies
outside the Virgo cluster and data from the Alfalfa project for galaxies
inside Virgo, we discuss the dependence of HI properties on environment.
We detect HI in about half of the galaxies outside Virgo. For these
systems, the HI morphology and kinematics change as a function of
environment, going from regular, rotating systems around isolated
galaxies to progressively more disturbed structures for galaxies with
neighbours or in groups. In denser environment, inside Virgo, nearly
none of the galaxies contains HI. We discuss future work in this field
which will be enabled by next-generation, pre-SKA radio instruments. We
present a simulated Apertif HI observation of an ATLAS3D early-type
galaxy, showing how its appearance and detection level vary as a
function of redshift.