Very Wide Galaxy Pairs of the Northern and Southern Sky

We present highly accurate observations of the 21 cm line of hydrogen in galaxies made at the Arecibo and Parkes Observatories. The galaxies observed have been identified, through rigorous selection criteria applied to the CfA and SSRS catalogs, as being members of pairs with projected separations of up to 1.5 Mpc (H0 = 75 km s-1 Mpc-1). These observations form the completion of the Chengalur-Nordgren galaxy pair sample with data previously published by Chengalur, Nordgren and colleagues. The new selection criteria used in this paper are an extension to larger projected separations of the criteria used previously. Forty-nine new galaxies are observed, while H I is detected in 41 of them. With the addition of these galaxies, the completed sample has highly accurate H I velocities for a total of 219 galaxies.

[1]  E. Salpeter,et al.  Close galaxy pairs in low and medium density regions: The southern sky. , 1997 .

[2]  E. Salpeter,et al.  Close galaxy pairs in medium density regions: the Northern sky , 1997 .

[3]  E. Salpeter,et al.  Galaxy Pairs, Redshift Catalogs, and the Cosmic Peculiar Velocity , 1996 .

[4]  E. Salpeter,et al.  Dynamics of Binary Galaxies. III. Details of the Close Pairs , 1995 .

[5]  John K. Salmon,et al.  Large-scale structure after COBE: Peculiar velocities and correlations of cold dark matter halos , 1994 .

[6]  E. Salpeter,et al.  Dynamics of binary galaxies. II. Close pairs , 1994 .

[7]  Carlberg,et al.  A survey of faint galaxy pairs , 1994, astro-ph/9401051.

[8]  E. Salpeter,et al.  Dynamics of binary galaxies. I: Wide pairs , 1993 .

[9]  Y. Jing,et al.  On the pairwise velocity dispersion of galaxies , 1993 .

[10]  R. Cen,et al.  The cosmic Mach number - Direct comparisons of observations and models , 1993 .

[11]  E. Salpeter,et al.  Galaxy pairs in redshift catalogs as a probe of dark matter , 1991 .

[12]  L. Costa,et al.  Southern Sky Redshift Survey - The catalog , 1991 .

[13]  Michael J. Kurtz,et al.  The Southern Sky Redshift Survey , 1988, astro-ph/9804064.

[14]  E. Salpeter,et al.  Neutral hydrogen in small groups of galaxies , 1983 .

[15]  S. White,et al.  An observational study of the dynamics of binary galaxies , 1983 .

[16]  John L. Tonry,et al.  X-Ray Spectra of Active Galactic Nuclei. , 1983 .

[17]  Marc Davis,et al.  A survey of galaxy redshifts. V. The two-point position and velocity correlations. , 1983 .

[18]  John L. Tonry,et al.  A survey of galaxy redshifts: 4. The data. , 1983 .

[19]  S. D. Peterson.  Double galaxies. II - Data analysis and a galaxian mass /M/L/ determination , 1979 .

[20]  E. Turner.  Binary galaxies. I. A well-defined statistical sample. , 1976 .

[21]  Kenneth I. Kellermann,et al.  Galactic and Extragalactic Radio Astronomy , 1974 .