NGC 2950 is a nearby and undisturbed SB0 galaxy hosting two nested stellar bars. We used the Tremaine-Weinberg method to measure the pattern speed of the primary bar. This also permitted us to establish that the two nested bars are rotating with different pattern speeds (at better than 99% confidence level). In particular, the rotation frequency of the secondary bar is higher than that of the primary one.

Direct measurements of pattern speeds in double-barred SB0's

CORSINI, ENRICO MARIA;
2004

Abstract

NGC 2950 is a nearby and undisturbed SB0 galaxy hosting two nested stellar bars. We used the Tremaine-Weinberg method to measure the pattern speed of the primary bar. This also permitted us to establish that the two nested bars are rotating with different pattern speeds (at better than 99% confidence level). In particular, the rotation frequency of the secondary bar is higher than that of the primary one.
2004
Penetrating Bars through Masks of Cosmic Dust
140202861X
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/1340691
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 0
social impact