Trigonometric Parallaxes of Four Star-forming RegionGalaxys in the Distant Inner

5 Jan 2021 · Y. Xu, S. B. Bian, M. J. Reid, J. J. Li, K. M. Menten, T. M. Dame, B. Zhang, A. Brunthaler, Y. W. Wu, L. Moscadelli, G. Wu, X. W. Zheng ·

We have measured trigonometric parallaxes for four water masers associated with distant massive young stars in the inner regions of the Galaxy using the VLBA as part of the BeSSeL Survey. G026.50$+$0.28. is located at the near end of the Galactic bar, perhaps at the origin} of the Norma spiral arm. G020.77$-$0.05 is in the Galactic Center region and is likely associated with a far-side extension of the Scutum arm. G019.60$-$0.23 and G020.08$-$0.13 are likely associated and lie well past the Galactic Center. These sources appear to be in the Sagittarius spiral arm, but an association with the Perseus arm cannot be ruled out.

PDF Abstract

Code

Add Remove Mark official

No code implementations yet. Submit your code now

Edit Social Preview

Trigonometric Parallaxes of Four Star-forming RegionGalaxys in the Distant Inner

Code Edit Add Remove Mark official

Categories

Code

Add Remove Mark official