SIMBAD references

2000A&A...363..843M - Astronomy and Astrophysics, volume 363, 843-850 (2000/11-3)

Strong non-circular motions of gas in the spiral galaxy NGC 1084.


Abstract (from CDS):

The results of Hα and [NII]λ6583 observations of the spiral galaxy NGC 1084 at the SAO 6m telescope with a Fabry-Perot interferometer are presented. The complex structure of the emission line profile has revealed the presence of giant star formation regions (``spur'') in the NE part of the galaxy. In this region the Hα line shows two distinct components, with line-of-sight velocity differences of ±(100-150)km/s. The first component corresponds to normal circular rotation. The second velocity component may be a signature of non-circular motions of the ionized gas in shock wave fronts. An increase of the [NII]/Hα line ratio confirms the shock wave interpretation of these features. The ionized gas kinematics in this galaxy is discussed.

Abstract Copyright:

Journal keyword(s): galaxies: individual: NGC 1084 - galaxies: ISM - galaxies: kinematics and dynamics

Nomenclature: NAME NGC 1084 Spur = [M2000c] NGC 1084 Spur. Fig.5, Table 2: [M2000c] A (Nos A-H).

Simbad objects: 8

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