Abstract
THE first OSO for which the redshift was determined, 3C273, has been regarded as the archetypal QSO by astronomers and the public alike. Its importance, however, is not purely symbolic: it is the brightest OSO (and, consequently, one of the best studied); its intrinsic luminosity is nearly an order of magnitude greater than that of any other QSO in its redshift range; it is the only solidly confirmed X-ray source1 among QSOs; and it is one of the half-dozen or so well-documented superluminal expansion VLB I radio sources2. In many ways, 3C273 epitomises the difficulties that led to suggestions that QSO redshifts might not have a cosmological origin. I report here the discovery of a galaxy associated with 3C273.
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STOCKTON, A. A galaxy associated with 3C273. Nature 274, 342–343 (1978). https://doi.org/10.1038/274342a0
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DOI: https://doi.org/10.1038/274342a0
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