OH maser emission at 4765 MHz in NGC7538 (IRS1)

Details OH maser emission at 4765 MHz in NGC7538 (IRS1) OH maser emission at 4765 MHz in NGC7538 (IRS1)

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.211p..41p&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 211, Nov. 15, 1984, p. 41P-44P.

Astronomy and Astrophysics

Astronomy

22

Astronomical Spectroscopy, Hydroxyl Emission, Interstellar Masers, Radio Astronomy, Angular Resolution, Astronomical Models, H Ii Regions

Scientific paper

VLA observations with an angular resolution of 1.25 arcsec have shown that most of the 4765-MHz OH emission originates in front of the compact H II region associated with IRS1. The emission positions agree in general with those of ground-state (1720 and 1665 MHz) masers. The absence of 1612-MHz emission imposes restrictions on possible OH cloud models. There appears to be no association of OH emission with H2CO or H2O masers.

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