The proper motion of the isolated neutron star RX J1605.3+3249

Details The proper motion of the isolated neutron star RX J1605.3+3249 The proper motion of the isolated neutron star RX J1605.3+3249

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26a...457..619z&link_type=abstract

Astronomy and Astrophysics, Volume 457, Issue 2, October II 2006, pp.619-622

Astronomy and Astrophysics

Astrophysics

13

Stars: Neutron, Ultraviolet: Stars

Scientific paper

Aims.We present a new optical observation of the X-ray dim isolated neutron star RX J1605.3+3249, performed in 2005 with the Wide Field Channel (WFC) of the Advanced Camera for Surveys (ACS) on board Hubble Space Telescope, aimed at measuring the neutron star proper motion. Methods: .We have compared the target position with the one measured in a previous HST image of the field obtained in 2001. Results: .We infer a proper motion of μ = 155.0 ± 3.1 mas/yr, corresponding to a star velocity VT ˜ 73 km s-1 at 100 pc distance. Our measurement refines the result recently reported by Motch et al. (2005, A&A, 429, 257), and confirms the optical source as the counterpart of the neutron star.

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