We measured a remarkable gas velocity gradient along the minor axis of 5 early-type spiral galaxies. This phenomenon suggests the presence of a kinematically-decoupled component in orthogonal rotation with respect to the galaxy disk. If this is the case a second event has taken place in the history of the galaxy. Alternatively the gas velocity gradient is the result of non-circular motions induced by the potential of a triaxial bulge or of a bar.
Gas minor-axis velocity gradients in early-type spiral galaxies
CORSINI, ENRICO MARIA;PIZZELLA, ALESSANDRO;COCCATO, LODOVICO;BERTOLA, FRANCESCO
2003
Abstract
We measured a remarkable gas velocity gradient along the minor axis of 5 early-type spiral galaxies. This phenomenon suggests the presence of a kinematically-decoupled component in orthogonal rotation with respect to the galaxy disk. If this is the case a second event has taken place in the history of the galaxy. Alternatively the gas velocity gradient is the result of non-circular motions induced by the potential of a triaxial bulge or of a bar.
File in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
|
2003_mglh_conf_211_Corsini_Minor_Axes.pdf
Accesso riservato
Tipologia:
Published (Publisher's Version of Record)
Licenza:
Accesso privato - non pubblico
Dimensione
121.9 kB
Formato
Adobe PDF
|
121.9 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
