Other
Scientific paper
May 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...198...31b&link_type=abstract
Astrophysical Journal, vol. 198, May 15, 1975, pt. 1, p. 31-43. Research supported by the Science Research Council of England.
Other
59
Absorption Spectra, Astronomical Spectroscopy, Line Spectra, Quasars, Red Shift, Interstellar Extinction, Spectrum Analysis, Stellar Spectra, Tables (Data)
Scientific paper
The spectrum of the quasar PKS 0237-23 has been observed over the wavelength range of 3730-4300 A at a resolution of 0.71 A. A list of 75 absorption lines has been combined with a further 26 lines drawn from other sources and identified by computer using a procedure described by Bahcall. Two new redshift systems, a complex of redshifts near z(abs) = 1.55 and a system at z(abs) = 2.1758, were found. The systems z = 1.51, 1.59, 1.65, and 1.67 discovered by earlier workers were all found to be double or multiple; in addition, the system z(abs) = 1.36 may be double. A constant splitting, delta-z = 0.0012, between adjacent redshifts, corresponding to 141 (plus or minus 9) km/sec in velocity, occurs at least seven times. The origin of this splitting, which also occurs in the quasars Markarian 132 and Ton 1530, is not understood. It almost corresponds, however, to the splitting between L-alpha, 1215.67 A and the nearby line 1215.14 A of He II.
Boksenberg Alec
Sargent Wallace L. W.
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