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|Title:||H I emission and absorption spectra towards the double radio source 1830-211|
Kesteven, Michael J.
te Lintel Hekkert, Peter
radio sources (astronomy)
milky way galaxy
|Publisher:||Blackwell Publishing for the Royal Astronomical Society|
|Citation:||Monthly Notices of the Royal Astronomical Society, 1992, Vol.259, p63|
|Abstract:||The flat-spectrum 1-arcsec double radio source 1830-211 has anomalous spectral and structural properties that do not admit inclusion in any of the known subdivisions of conventional Galactic and extragalactic radio sources. We have observed the H I emission and absorption spectra due to Galactic neutral hydrogen towards the source. A comparison suggests that 1830-211 is extragalactic, consistent with the hypothesis that the source is an example of the gravitational lensing phenomenon. An unusual warm H I component with a spin temperature of about 1000 K has been detected towards the source. This H I fragment is either a peculiar-velocity cloud or else is located beyond the solar circle and about 2 kpc off the Galactic plane.|
|Copyright:||1992 Royal Astronomical Society|
|Appears in Collections:||Research Papers (A&A)|
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