EAS Publications Series
Volume 56, 2012The Role of the Disk-Halo Interaction in Galaxy Evolution: Outflow vs. Infall?
|Page(s)||247 - 250|
|Section||Evidence for a Disk-Halo Connection in Galaxies|
|Published online||17 September 2012|
Miguel A. de Avillez (ed)
EAS Publications Series, 56 (2012) 247–250
Kinematics of Atomic Gas Halos in Edge-on Spirals
1 Department of Physics and Astronomy, University of New Mexico, 800 Yale Blvd, NE, Albuquerque, NM 87131, USA
2 Department of Physics, University of Wisconsin-Whitewater, 800 West Main St., Whitewater, WI 53190, USA
3 CSIRO/ATNF, Paul Wild Observatory, Narrabri, NSW 2390, Australia
We present new constraints on lagging atomic halos in the edge-ons NGC 4244 and NGC 4565 from recent WSRT data. In NGC 4244, any possible lag is limited to <10km s−1kpc−1 up to z = 2kpc, while NGC 4565 may have a lag of ∼10km s−1kpc−1, up to z = 2kpc, but only at about R ≤ 3′. These small lags in galaxies with little star formation may disagree with recently reported trends for extraplanar ionized gas in three edge-ons.
© EAS, EDP Sciences, 2012