Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006mnras.371..619n&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 371, Issue 2, pp. 619-625.
Astronomy and Astrophysics
Astronomy
12
Magnetic Fields: Masers: Polarization: Stars: Formation: Ism: Individual: On1: Ism: Jets And Outflows, Magnetic Fields, Masers, Polarization, Stars: Formation, Ism: Individual: On1, Ism: Jets And Outflows
Scientific paper
Multi-Element Radio-Linked Interferometer Network polarization measurements of the OH 18-cm masers in ON1 are presented. OH maser emission is detected in all four ground state lines. The bulk of the masers lie in an elongated distribution covering 2 arcsec at position angle 130°, near the southern edge of the ultracompact HII region. The maser distribution is orthogonal to the bipolar outflow seen in HCO+ at position angle (PA) 44°. An isolated group of 1720-MHz masers is also seen 6 arcsec to the east. The magnetic field deduced from Zeeman splitting of the OH maser lines shows a large-scale order, with field values ranging from -0.4 to -4.6 mG.
Asanok K.
Cohen Richard J.
Gasiprong N.
Hutawarakorn Kramer Busaba
Muanwong Orrarujee
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