SIMBAD references

2020A&A...638A..17O - Astronomy and Astrophysics, volume 638A, 17-17 (2020/6-1)

SiO maser astrometry of the red transient V838 Monocerotis.

ORTIZ-LEON G.N., MENTEN K.M., KAMINSKI T., BRUNTHALER A., REID M.J. and TYLENDA R.

Abstract (from CDS):

We present multiepoch observations with the Very Long Baseline Array of SiO maser emission in the v=1, J=1-0 transition at 43GHz from the remnant of the red nova V838 Mon. We modeled the positions of maser spots to derive a parallax of 0.166±0.060 mas. Combining this parallax with other distance information results in a distance of 5.6±0.5kpc, which is in agreement with an independent geometric distance of 6.1±0.6kpc from modeling polarimetry images of V838 Mon's light echo. Combining these results, and including a weakly constraining Gaia parallax, yields a best estimate of distance of 5.9±0.4kpc. The maser spots are located close to the peaks of continuum at ∼225GHz and SiO J=5-4 thermal emission detected with the Atacama Large (sub)Millimeter Array. The proper motion of V838 Mon confirms its membership in a small open cluster in the Outer spiral arm of the Milky Way.

Abstract Copyright: © G. N. Ortiz-León et al. 2020

Journal keyword(s): masers - techniques: interferometric - astrometry - supergiants - stars: distances - stars: individual: V838 Monocerotis

VizieR on-line data: <Available at CDS (J/A+A/638/A17): table1.dat list.dat fits/*>

Simbad objects: 5

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