The spectrum of the quasar B2 1225+31

Details The spectrum of the quasar B2 1225+31 The spectrum of the quasar B2 1225+31

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...223..364w&link_type=abstract

Astrophysical Journal, Part 1, vol. 223, July 15, 1978, p. 364-372. NSF-supported research.

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21

Absorption Spectra, Abundance, Astronomical Spectroscopy, Emission Spectra, Quasars, Line Spectra, Red Shift

Scientific paper

The spectrum of the intrinsically bright QSO B2 1225+31 (emission-line redshift of about 2.2) has been analyzed in the range from 3140 A to 8000 A, using image-tube scanner and echelette data. The emission lines are abnormally weak and broad, although their relative intensities are comparable to those of other QSOs. The absorption-line spectrum is exceedingly rich shortward of emission L-alpha. One absorption system (at a redshift of about 1.7941) is very well established, with 25 resonance-line identifications. Several other systems are suggested but the evidence is in no case compelling. No strong evidence for line locking or abnormal abundances was found in this object.

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