Query : 2000A&A...358..812J

2000A&A...358..812J - Astronomy and Astrophysics, volume 358, 812-818 (2000/6-3)

Vertical motions in the disk of NGC 5668 as seen with optical Fabry-Perot spectroscopy.


Abstract (from CDS):

We have observed the nearly face-on spiral galaxy NGC 5668 with the TAURUS II Fabry-Perot interferometer at the William Herschel Telescope using the Hα line to study the kinematics of the ionized gas. From the extracted data cube we construct intensity, velocity and velocity dispersion maps. We calculate the rotation curve in the innermost 2 arcmin and we use the residual velocity field to look for regions with important vertical motions. By comparing the geometry of these regions in the residual velocity field with the geometry in the intensity and velocity dispersion maps we are able to select some regions which are very likely to be shells or chimneys in the disk. The geometry and size of these regions are very similar to the shells or chimneys detected in other galaxies by different means. Moreover, it is worth noting than this galaxy has been reported to have a population of neutral hydrogen high velocity clouds (Schulman et al. 1996AJ....112..960S) which, according to these observations, could have been originated by chimneys similar to those reported in this paper.

Abstract Copyright:

Journal keyword(s): ISM: kinematics and dynamics - galaxies: individual: NGC 5668 - galaxies: ISM - galaxies: kinematics and dynamics - galaxies: spiral

Nomenclature: Fig.5, Table 3: [JB2000] A (Nos A-H).

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
1 NGC 3938 GiG 11 52 49.4335936248 +44 07 14.697085116 10.80 10.90 10.38     ~ 492 1
2 NGC 5668 G 14 33 24.3419973936 +04 27 01.650790800   12.7       ~ 203 0

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