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| Query : 2000A&A...363..843M |
2000A&A...363..843M - Astronomy and Astrophysics, volume 363843-850 (2000/11-3)
Strong non-circular motions of gas in the spiral galaxy NGC 1084.
MOISEEV A.V.
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
| Number of rows : 8 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NGC 1084 | EmG | 02 45 59.926 | -07 34 43.10 | 11.22 | 11.59 | 10.73 | 10.55 | 11.1 | ~ | 386 | 2 |
| 2 | SN 1996an | SN* | 02 46 00.83 | -07 34 20.3 | 14 | SNII | 33 | 1 | ||||
| 3 | SN 1998dl | SN* | 02 46 01.47 | -07 34 25.1 | 16.0 | SNIIP | 43 | 1 | ||||
| 4 | NGC 1313 | AG? | 03 18 16.046 | -66 29 53.74 | 10.06 | 10.0 | 9.40 | 10.4 | ~ | 723 | 2 | |
| 5 | IC 2574 | AG? | 10 28 23.6148831408 | +68 24 43.440012756 | 11.70 | 11.07 | 10.87 | 10.74 | ~ | 703 | 1 | |
| 6 | NGC 4631 | GiC | 12 42 08.009 | +32 32 29.44 | 9.78 | 9.19 | 9.10 | ~ | 1154 | 3 | ||
| 7 | M 101 | GiP | 14 03 12.583 | +54 20 55.50 | 8.46 | 7.86 | 7.76 | ~ | 3138 | 2 | ||
| 8 | NAME NGC 1084 Spur | reg | ~ | ~ | ~ | 1 | 0 |
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