SIMBAD references

2009ApJ...705.1548R - Astrophys. J., 705, 1548-1553 (2009/November-2)

A trigonometric parallax of Sgr B2.

REID M.J., MENTEN K.M., ZHENG X.W., BRUNTHALER A. and XU Y.

Abstract (from CDS):

We have measured the positions of H2 O masers in Sgr B2, a massive star-forming region in the Galactic center, relative to an extragalactic radio source with the Very Long Baseline Array. The positions measured at 12 epochs over a time span of one year yield the trigonometric parallax of Sgr B2 and hence a distance to the Galactic center of R0= 7.9+0.8–0.7 kpc. The proper motion of Sgr B2 relative to Sgr A* suggests that Sgr B2 is ~0.13 kpc nearer than the Galactic center, assuming a low-eccentricity Galactic orbit.

Abstract Copyright:

Journal keyword(s): astrometry - Galaxy: fundamental parameters - Galaxy: halo - Galaxy: kinematics and dynamics - Galaxy: structure - stars: formation

CDS comments: Calibrator J1642+4938 is not in Simbad.

Simbad objects: 10

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2020.09.30-00:43:12

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