1. |
- Jones, D. L., et al.
(författare)
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High dynamic range VLBI observations of NGC 6251
- 1986
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Ingår i: Astrophysical Journal. - Philadelphia, United States : Institute of Physics Publishing, Inc. - 0004-637X .- 1538-4357. ; 305:2, s. 684-697
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Tidskriftsartikel (refereegranskat)
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2. |
- Matveenko, L.I., et al.
(författare)
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Decimeter-wavelength structure in the quasar 3C 345
- 1986
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Ingår i: Pis'ma v Astronomicheskii Zhurnal. - Moscow : Izdatel'stvo Nauka. - 0320-0108. ; 12:1, s. 63-67
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Tidskriftsartikel (refereegranskat)abstract
- The nuclear structure of the quasar 3C 345 has been surveyed at wavelength = 18 and 49 cm with two different VLBI networks. From the nucleus issues a jet, bending as it advances outward. Individual structure components are identified; their radio continuum and that of the nucleus indicate an optically thick source, the break in the spectrum shifting toward lower frequencies with increasing distance from the nucleus.
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3. |
- Mundy, Lee G., et al.
(författare)
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Protostellar Condensations within the Orion Ridge
- 1986
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Ingår i: Astrophysical Journal. - Philadelphia, PA : Institute of Physics Publishing (IOPP). - 0004-637X .- 1538-4357. ; 304:2, s. L51-L55
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Tidskriftsartikel (refereegranskat)abstract
- Aperture synthesis observations of the CS J = 2 to 1 line and 95 GHz continuum emission from a 2 arcmin x 3 arcmin region around IRc2 in the OMC-1 molecular cloud have been obtained at 7.5 arcsec resolution with the Owens Valley Radio Observatory millimeter interferometer. These observations reveal four distinct condensations with the OMC-1 molecular ridge. The condensations lie along the edge of the bright central part of the H II region, M 42, suggesting that they may have been formed as a result of shock compression driven by the H II region. Their masses and densities, M about 50 solar masses and n about 10 to the 6th - 10 to the 7th/cu cm, suggest that the condensations will undergo further massive star formation on a short time scale (about 20,000 yr).
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