SIMBAD references

2006ApJ...645..337H - Astrophys. J., 645, 337-344 (2006/July-1)

Water maser motions in W3(OH) and a determination of its distance.

HACHISUKA K., BRUNTHALER A., MENTEN K.M., REID M.J., IMAI H., HAGIWARA Y., MIYOSHI M., HORIUCHI S. and SASAO T.

Abstract (from CDS):

We report phase-referencing VLBA observations of H2O masers near the star-forming region W3(OH) to measure their parallax and absolute proper motions. The measured annual parallax is 0.489±0.017 mas (2.04±0.07 kpc), where the error is dominated by a systematic atmospheric contribution. This distance is consistent with photometric distances from previous observations and with the distance determined from CH3OH maser astrometry presented in a related paper. We also find that the source driving the H2O outflow, the ``TW-object'', moves with a three-dimensional velocity of >7 km/s relative to the ultracompact H II region W3(OH).

Abstract Copyright: ∼

Journal keyword(s): Astrometry - Masers - Stars: Distances - Stars: Formation - stars: individual: (W3(OH)) - Stellar Dynamics

Nomenclature: Table 2: [HBM2006] NN (Nos 1-42).

Simbad objects: 11

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