Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...242l..59w&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 242, Dec. 1, 1980, p. L59-L63. Research supported by the Max-Planck-
Astronomy and Astrophysics
Astrophysics
37
Nebulae, Quasars, Stellar Spectra, Stellar Spectrophotometry, Astronomical Photography, Galactic Structure, Image Resolution, Line Spectra, Red Shift
Scientific paper
The discovery of a diffuse nebulosity physically associated with the quasar 3C 273 (excluding its optical jet) is reported. The nebulosity was detected as a diffuse asymmetrical extension in the isophotes of a photographic image of the quasar obtained at the prime focus of a 3.6-m telescope which is resolved with a radial size scale of approximately 15 arcsec at a surface brightness level of 25 mag/sq arcsec. Spectra of the extended structure exhibit narrow emission lines at the redshifted positions of the forbidden O II line at 3727 A and Ne III line at 3869 A, indicating the presence of low-density hot gas at a projected distance of approximately 4.5 arcsec from the quasar. Comparison of photometric and spectroscopic data indicates the dominant emission to be continuum radiation, which may originate from an underlying galaxy associated with 3C 273.
Albrecht Roland
Boksenberg Alec
Gehren Thomas
Morton Donald C.
Wehinger Peter A.
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