VELOCITY BRIDGES - SIGNATURE OF HVC INTERACTION WITH THE GALACTIC HALO

Authors
PIETZ J KERP J KALBERLA PMW MEBOLD U BURTON WB HARTMANN D
Citation
J. Pietz et al., VELOCITY BRIDGES - SIGNATURE OF HVC INTERACTION WITH THE GALACTIC HALO, Astronomy and astrophysics, 308(3), 1996, pp. 37-40
Citations number
19
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
308
Issue
3
Year of publication
1996
Pages
37 - 40
Database
ISI
SICI code
0004-6361(1996)308:3<37:VB-SOH>2.0.ZU;2-7
Abstract
We present observational evidence for the existence of ''velocity brid ges'' between high-velocity clouds (HVCs) and neutral gas at lower vel ocities towards HVC complex C. The velocity bridges (VBs henceforward) show up as faint 21-cm line emission filaments (Tg similar or equal t o 0.2K) connecting the two velocity regimes over velocity gaps of 20 t o 100 km s(-1). We interpret VBs as indicators of energetic interactio ns of HVCs with gas in the galactic halo or the disk-halo interface.