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neutron star

Alert Notice 354: Extending Request to Observe HMXBs in Support of Radial Velocity Observations

August 13, 2007: AAVSO Alert Notice 348 (issued April 6, 2007) included the request from Dr. Gordon Sarty, University of Saskatchewan, for AAVSO assistance in observing four (4) High Mass X-ray Binaries (HMXBs) in support of his spectroscopic observations with the Dominion Astrophysical Observatory (DAO) 1.85-m Plaskett telescope, in Victoria, BC, Canada. Dr. Sarty has obtained additional observing time on these objects and is requesting our continued assistance over the next several weeks.

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