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 conducted VLA C-configuration observations to measure positions andluminosities of Galactic Class II 6.7 GHz methanol masers and their associatedultra-compact H II regions. The spectral resolution was 3.90625 kHz and thecontinuum sensitivity reached 45 \uJypb. We mapped 372 methanol masers withpeak flux densities of more than 2 Jy selected from the literature, 367 of themwere detected. Absolute positions have nominal uncertainties of 0.3 arcsec. Inthis first paper on the data analysis, we present three catalogs, the firstgives information on the strongest feature of 367 methanol maser sources, andthe second on all detected maser spots. The third catalog present derived dataof the 279 radio continuum sources found in the vicinity of maser sources.Among them, 140 show evidence of physical association with maser sources. Ourcatalogs list properties including distance, flux density, radial velocity andthe distribution of masers on the Galactic plane is then provided as well. Wefound no significant relationship between luminosities of masers and theirassociated radio continuum counterparts.

On the Relationship of UC H II Regions and Class II Methanol Masers: I. Source Catalogs