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HD 88601


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Structure and kinematics of edge-on galaxy discs - I. Observations of the stellar kinematics
We present deep optical long-slit spectra of 17 edge-on spiral galaxiesof intermediate to late morphological type, mostly parallel to theirmajor axes and in a few cases parallel to the minor axes. Theline-of-sight stellar kinematics are obtained from the stellarabsorption lines using the improved cross-correlation technique. Ingeneral, the stellar kinematics are regular and can be traced well intothe disc-dominated region. The mean stellar velocity curves are far fromsolid-body, indicating that the effect of dust extinction is not large.The line-of-sight stellar disc velocity dispersion correlates with thegalaxy maximum rotational velocity, but detailed modelling is necessaryto establish whether this represents a physical relation. In fourspirals with a boxy- or peanut-shaped bulge we are able to detectasymmetric velocity distributions, having a common signature withprojected radius in the mean line-of-sight velocity and theh3 and h4 curves. In two cases this kinematicasymmetry probably represents the `figure-of-eight' pattern synonymouswith a barred potential. We emphasize, however, that the signatures seenin the h3 and h4 curves may also be due to thedisc seen in projection.

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观测天体数据

星座:船帆座
右阿森松:10h11m58.14s
赤纬:-45°38'49.5"
视星:8.585
距离:229.885 天文距离
右阿森松适当运动:-30.1
赤纬适当运动:5.3
B-T magnitude:9.851
V-T magnitude:8.69

目录:
适当名称   (Edit)
HD 1989HD 88601
TYCHO-2 2000TYC 8183-1557-1
USNO-A2.0USNO-A2 0375-10429434
HIPHIP 49956

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