It is shown that the number of redshift systems based on Civ doublets, proposed by Borosonet al. (1978) in the absorption spectrum of the quasar PKS 0237-23, is insignificantly different from that that would be expected from chance coincidences. Consequently, these systems and theirz-values appear to be devoid of any physical significance.

/pdf/chance-coincidences-and-the-so-called-redshift-systems-in-4vt05aro4w.pdf

Chance coincidences and the so-called redshift systems in the absorption spectrum of PKS 0237-23

The emission and absorption lines (δδ3716–4290) in the spectrum of the quasar 0237–233 are identified within the framework of the PLS model. The available evidence indicates that it is a helium star. Similarities between the spectral properties of 0237–233 and the star Upsilon Sagittarii are pointed out. Predictions are made for the absorption-line spectrum which falls outside δδ3716–4290 and also for an expected discontinuity at δ2600.

/pdf/identification-of-lines-in-the-spectrum-of-the-quasar-0237-3xrvg3r2wl.pdf

Identification of lines in the spectrum of the quasar 0237-233

The plasma-laser star model for quasars has been used to identify the emission and absorption lines as well as the continuum discontinuity in the spectrum of the quasar 0420-388. The Hei λ3680 discontinuity is identified for the first time in an astronomical spectra. Two predictions are made.

/pdf/identification-of-lines-in-the-spectrum-of-the-quasar-0420-4nz3fqhbsb.pdf

Identification of lines in the spectrum of the quasar 0420-388

Libbyet al. (1984) have studied the absorption-line data for 13 QSOs in the rest-frames of the QSOs. It is shown that the number of groups in which 5 lines or more lie within a wavelength interval of 1.0 A found by these authors is insignificantly different from that that would be expected from chance coincidences. Consequently, there is no evidence that the rest-frame wavelengths at which these groups occur have any special significance.

T. A. Clark

Papers

Periodic fluctuations in continuum near-IR solar intensity and CO absorption.