Distance to Orion KL Measured with VERA

Abstract

We present the initial results of multi-epoch VLBI observations of the 22 GHz H2O masers in the Orion KL region with VERA (VLBI Exploration of Radio Astrometry). With the VERA dual-beam receiving system, we have carried out phase-referencing VLBI astrometry and successfully detected an annual parallax of Orion KL to be 2.29+/-0.10 mas, corresponding to the distance of 437+/-19 pc from the Sun. The distance to Orion KL is determined for the first time with the annual parallax method in these observations. Although this value is consistent with that of the previously reported, 480+/-80 pc, which is estimated from the statistical parallax method using proper motions and radial velocities of the H2O maser features, our new results provide the much more accurate value with an uncertainty of only 4%. In addition to the annual parallax, we have detected an absolute proper motion of the maser feature, suggesting an outflow motion powered by the radio source I along with the systematic motion of source I itself.

7 pages, 3 figures. PASJ, in press (Vol. 59, No. 5, October 25, 2007 issue)

References in corpus (10)

• The Distance to the Perseus Spiral Arm in the Milky Way
• Water maser motions in W3(OH) and a determination of its distance
• Astrometry of Galactic Star Forming Region Sharpless 269 with VERA : Parallax Measurements and Constraint on Outer Rotation Curve
• Proper Motions of the BN Object and the I Radio Source in Orion: Where and When Did BN Become a Runaway Star?
• Coexisting conical bipolar and equatorial outflows from a high-mass protostar
• Dynamical decay of a massive multiple system in Orion KL?
• Multi-epoch VLBA observations of T Tauri South
• First Fringe Detection with VERA's Dual-Beam System and its Phase Referencing Capability
• VERA 22 GHz fringe search survey
• Absolute Proper Motions of H2O Masers Away from the Galactic Plane Measured with VERA in the "Superbubble" Region NGC 281

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