Are methanol masers associated with hypercompact HII regions?

Details Are methanol masers associated with hypercompact HII regions? Are methanol masers associated with hypercompact HII regions?

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atnf.prop.1434t&link_type=abstract

ATNF proposal C1836, Semester: April, 2008

Computer Science

Galactic, Atca

Scientific paper

Methanol masers are thought to be one of the best tracers of recent massive star formation, perhaps even predating the ultracompact HII region phase. They thus offer a unique glimpse into the early phases in the formation of a massive star, which are currently not well understood either observationally or theoretically. We are currently in the process of carrying out a large-scale survey of the Galaxy for methanol masers (the MMB survey). In this proposal we seek to test the hypothesis that methanol masers trace a pre-ultracompact HII region phase by determining their association with hypercompact (HC) HII regions. We will observe a small sample of masers with ATCA in three frequency bands in order to detect compact optically think HII regions and measure their spectral indices.

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