The Vela pulsar proper motion revisited with HST astrometry

Details The Vela pulsar proper motion revisited with HST astrometry The Vela pulsar proper motion revisited with HST astrometry

1999-12-29

arxiv.org/abs/astro-ph/9912543v1

Astronomy and Astrophysics

Astrophysics

4 pages, LaTex, 2 Postscript figures. Accepted for publication in Astronomy&Astrophysics

Scientific paper

Using all the HST WFC/WFPC2 images of the field collected so far, we have performed an accurate relative astrometry analysis to re-assess the value of the Vela pulsar proper motion. Although covering a much shorter time span, our measurement clearly confirms the previous result obtained by Nasuti et al. (1997) using ground-based optical data and nails the proper motion value to mu = 52 +/- 3 mas/yr.

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