Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974mnras.169..545h&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 169, Dec. 1974, p. 545-576.
Astronomy and Astrophysics
Astronomy
57
Emission Spectra, Hydroxyl Emission, Interstellar Radiation, Line Spectra, Maser Outputs, Microwave Interferometers, Astronomical Maps, Astronomical Spectroscopy, Circular Polarization, Fine Structure, H Ii Regions, Microwave Emission, Zeeman Effect
Scientific paper
The OH maser sources W3 (OH), Sgr B2, W49 (positions 1 and 2), W75S, W75N, and VY CMa have been investigated at 1665 MHz with an interferometer of 23 km (132,000 wavelengths) baseline. The 1667 MHz emission from VY CMa was also studied. Relative positions of the brightest components of these sources have been measured to an accuracy of .01 arc sec. Maps of component positions have been obtained for all the sources; the overall sizes of the sources are typically a few seconds of arc. The size of the W3 (OH) source is very similar to that found for the associated H II region by Baldwin et al. The 1665/7 MHz emission from VY CMa comes from a region which is much smaller than that of the 1612 MHz emission. It is argued that the interferometer measurements provide evidence for Zeeman splitting of the spectral features of W3 (OH) in a field of 4.7 mG.
Booth Roy S.
Davies Rhodri D.
Harvey P. J.
McLaughlin William
Whittet Doug C. B.
No associations
LandOfFree
Interferometric observations of the structure of main-line OH sources does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Interferometric observations of the structure of main-line OH sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interferometric observations of the structure of main-line OH sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1338697