The nature of QSO redshifts

Details The nature of QSO redshifts The nature of QSO redshifts

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...223..747s&link_type=abstract

Astrophysical Journal, Part 1, vol. 223, Aug. 1, 1978, p. 747-751, 753-757.

Astronomy and Astrophysics

Astronomy

136

Astronomical Spectroscopy, Cosmology, Galactic Radiation, Quasars, Red Shift, Doppler Effect, Gravitational Effects, Luminous Intensity, Sky Surveys (Astronomy), Spectral Energy Distribution

Scientific paper

For a group of 27 QSOs comprising virtually all objects in the catalog of Burbidge, Crowne, and Smith (1977) with z at least 0.45, listed apparent visual magnitudes less than 19.12 + 5 log z, and declinations of -15 to + 55 deg, a program of spectroscopy of all galaxies brighter than the red Sky Survey limit and within 45 arcsec radius of each QSO has been undertaken. Redshifts have been obtained for 25 of the 29 galaxies, and 13 galaxies in eight fields have redshifts within 1000 km/s of that of the QSO in the field. The chance probability of eight or more such agreements, evaluated from the redshift distribution of the total sample of galaxies, is shown to be less than 1.5 in a million, making the cosmological nature of QSO redshifts a virtual certainty. The possibility that two distinct types of QSO exist, one having noncosmological redshifts, is discussed briefly and found to be extremely unlikely.

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