Radio Proper Motions of Wolf-Rayet Stars

Details Radio Proper Motions of Wolf-Rayet Stars Radio Proper Motions of Wolf-Rayet Stars

2009-02-17

arxiv.org/abs/0902.2962v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

12 pages, 7 figures

Scientific paper

We present the analysis of observations taken from the Very Large Array archive of six Wolf-Rayet stars with radio emission, with the purpose of determining their proper motions. Typically, these observations cover periods of 10 to 20 years. To verify the method, we included WR 140 in the sample, finding that the proper motions determined by us are a few times more accurate than and consistent within noise with those of Hipparcos. The other five WR stars were not studied by Hipparcos and we report their proper motions for the first time. The proper motions for WR 145a = Cyg X-3 are consistent with the source being stationary with respect to its local standard of rest and suggest that the black hole in this binary system formed by direct collapse of a massive star, without expulsion of a supernova remnant.

Affiliated with

Also associated with

No associations

Rating

Radio Proper Motions of Wolf-Rayet Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Radio Proper Motions of Wolf-Rayet Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio Proper Motions of Wolf-Rayet Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-311578