Very Long Baseline Interferometry of 1720 MHz masers in W3(OH)

Details Very Long Baseline Interferometry of 1720 MHz masers in W3(OH) Very Long Baseline Interferometry of 1720 MHz masers in W3(OH)

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...281..871m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 281, no. 3, p. 871-881

Astronomy and Astrophysics

Astronomy

29

H Ii Regions, Hydroxyl Emission, Interstellar Masers, Radio Astronomy, Star Formation, Astronomical Models, Emission Spectra, Methyl Alcohol, Power Spectra, Very Long Base Interferometry

Scientific paper

Results are reported from 5-station intercontinental VLBI observations of 1720 MHz OH masers in W3(OH). Two regions of maser emission were detected, superimposed on northern and southern parts of the H II region. Maser spots are individually unresolved and are less than or equal to 1.2 mas Full Width at Half Maximum (FWHM), placing an upper limit on interstellar scattering. These observations show that 1720 MHz maser spots are significantly smaller than 1665 MHz spots. Using a maser model described in Gray et al. (1992), the data are analyzed in terms of an accelerating and outflowing zone in the northern region, where 1720, 4765 and 1665 MHz maser spots may be spatially coincident. Geometrical effects leading to maser beaming in a turbulent medium are also modeled and these effects are sufficient to explain the relative sizes of maser spots at 1720 and 1665 MHz.

Affiliated with

Also associated with

No associations

Rating

Very Long Baseline Interferometry of 1720 MHz masers in W3(OH) 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 Very Long Baseline Interferometry of 1720 MHz masers in W3(OH), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Very Long Baseline Interferometry of 1720 MHz masers in W3(OH) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-862962