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 report results of an extensive observational campaign of the 6 cmformaldehyde maser in the young massive stellar object IRAS18566+0408(G37.55+0.20) conducted from 2002 to 2009. Using Arecibo, VLA, and GBT, wediscovered quasi-periodic formaldehyde flares (P ~ 237 days). Based on Areciboobservations, we also discovered correlated variability between formaldehyde(H2CO) and methanol (CH3OH) masers. The H2CO and CH3OH masers are not spatiallycoincident, as demonstrated by different line velocities and high angularresolution MERLIN observations. The flares could be caused by variations in theinfrared radiation field, possibly modulated by periodic accretion onto a youngbinary system.

Quasi-Periodic Formaldehyde Maser Flares in the Massive Protostellar Object IRAS18566+0408