Abstract
We present a preliminary analysis of the H I 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 H I properties on environment. We detect H I in about half of the galaxies outside Virgo. For these systems, the H I 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 H I. We discuss future work in this field which will be enabled by next-generation, pre-SKA radio instruments. We present a simulated Apertif H I observation of an ATLAS3D early-type galaxy, showing how its appearance and detection level vary as a function of redshift.
Original language | English |
---|---|
Title of host publication | PRA 2009 |
Subtitle of host publication | Panoramic Radio Astronomy: Wide-field 1-2 GHz research on galaxy evolution |
Place of Publication | Groningen, the Netherlands |
Publisher | Scuola Internazionale Superiore di Studi Avanzati (SISSA) |
Number of pages | 6 |
DOIs | |
Publication status | Published - 1 Jan 2009 |
Externally published | Yes |
Event | 2009 Panoramic Radio Astronomy: Wide-Field 1-2 GHz Research on Galaxy Evolution, PRA 2009 - Groningen, Netherlands Duration: 2 Jun 2009 → 5 Jun 2009 |
Publication series
Name | Proceedings of Science |
---|---|
Publisher | SISSA |
Volume | 89 |
ISSN (Print) | 1824-8039 |
Conference
Conference | 2009 Panoramic Radio Astronomy: Wide-Field 1-2 GHz Research on Galaxy Evolution, PRA 2009 |
---|---|
Country/Territory | Netherlands |
City | Groningen |
Period | 2/06/09 → 5/06/09 |