Double galaxy investigations. I - Observations

Details Double galaxy investigations. I - Observations Double galaxy investigations. I - Observations

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apjs...50..319t&link_type=abstract

Astrophysical Journal Supplement Series, vol. 50, Nov. 1982, p. 319-389. Research supported by the Universita di Bologna.

Other

53

Galaxies, Red Shift, Visible Spectrum, Calibrating, Data Correlation, Data Reduction, Spectrograms, Spectrum Analysis, Tables (Data)

Scientific paper

Redshift information from 240 A/mm spectrograms is presented for 370 double arcsec galaxy systems from the Karachentsev (1972) catalog, including all pairs in that catalog with separation less than 80 arcsec. An extensive error discussion utilizing internal and external (21 cm) comparisons provides calibration of systematic error and determines the uncertainty for a typical high weight optical redshift to be plus or minus 65 km/sec. Internal differential redshifts within single spectra using common lines achieve accuracies of 18-30 km/sec, depending upon separation, and are available for about 200 pairs. Extensive information on emission and other properties is also provided.

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