English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present multi-epoch observations with the VLBA of SiO maser emission inthe v=1, J=1-0 transition at 43 GHz from the remnant of the red nova V838 Mon.We model the positions of maser spots to derive a parallax of 0.166+/-0.060mas. Combining this parallax with other distance information results in adistance of 5.6+/-0.5 kpc, which agrees with an independent geometric distanceof 6.1+/-0.6 kpc from modeling polarimetry images of V838 Mon's light echo.Combining these results, and including a weakly constraining Gaia DR2 parallax,yields a best estimate of distance of 5.9+/-0.4 kpc. The maser spots arelocated close to the peaks of continuum at ~225 GHz and SiO J=5-4 thermalemission detected with ALMA. The proper motion of V838 Mon confirms itsmembership in a small open cluster in the Outer spiral arm of the Milky Way.

SiO maser astrometry of the red transient V838 Monocerotis