SIMBAD references

1998A&AS..132...13D - Astron. Astrophys., Suppl. Ser., 132, 13-20 (1998/October-1)

The kinematics of 867 galactic planetary nebulae.

DURAND S., ACKER A. and ZIJLSTRA A.

Abstract (from CDS):

We present a compilation of radial velocities of 867 galactic planetary nebulae. Almost 900 new measurements are included. Previously published kinematical data are compared with the new high-resolution data to assess their accuracies. One of the largest samples in the literature shows evidence for a systematic velocity offset. We calculate weighted averages between all available data. Of the final values in the catalogue, 90% have accuracies better than 20km/s. We use this compilation to derive kinematical parameters of the galactic differential rotation obtained from least-square fitting and to establish the Disk rotation curve; we find no significal trend for the presence of an increasing external rotation curve. We examine also the rotation of the bulge; the derived curve is consistent with a linearly increasing rotation velocity with l: we find Vb,r=(9.9±1.3)l-(6.7±8.5)km/s. A possible steeper gradient in the innermost region is indicated.

Abstract Copyright:

Journal keyword(s): catalogues - planetary nebulae - Galaxy (the): kinematics of

VizieR on-line data: <Available at CDS (J/A+AS/132/13): table2.dat table2.ps (updated 1998 Oct. 23)>

Simbad objects: 870

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