CfARed.S. ivo://nasa.heasarc/cfa2s NASA/GSFC HEASARC Huchra, Vogeley, Geller 2026-05-08 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Galaxy Redshift Survey Source The Center for Astrophysics (CfA) Redshift Survey South Galactic Cap (CFA2S) Catalog contains redshifts for a sample of about 4300 galaxies with blue (Zwicky B(0) type) magnitude <= 15.5 covering the range from 20 h to 4h in right ascension and from -2.5 deg to 90 deg in declination. This sample is complete for all galaxies in the merge of the Zwicky et al. and Nilson catalogs in the south Galactic cap. Redshifts for 2964 of these were measured as part of the second CfA Redshift Survey. The data reveal large voids in the foreground and background of the Perseus-Pisces Supercluster. The largest of these voids lies at a mean velocity ~ 8000km/s, has diameter of ~ 5000km/s, and is enclosed by a complex of dense structures. The large structure known as the Perseus-Pisces Supercluster forms the near side of this complex. On the far side of this large void, at a mean velocity of ~ 12000km/s, there is another coherent dense wall. The structures in this survey support the view that galaxies generally lie on surfaces surrounding or nearly surrounding low-density regions or voids. This table was created by the HEASARC in March 2005 based on CDS table J/ApJS/121/287/cfa2s.dat.gz This is a service provided by NASA HEASARC . 1999ApJS..121..287H https://heasarc.gsfc.nasa.gov/W3Browse/all/cfa2s.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=cfa2s& GET text/xml 180 99999 true 307.7000871 -2.33098876 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=cfa2s GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_cfa2s&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GALAXY CATALOG 0.0166666666666667 Optical public cfa2s CfA Redshift Survey: South Galactic Cap Data name Galaxy Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable bmag Apparent Blue Magnitude in Zwicky-B(0) System mag phot.mag;em.opt.B double nullable radial_velocity Heliocentric Radial Velocity (km/s) km/s spect.dopplerVeloc;pos.heliocentric int nullable radial_velocity_error RMS Uncertainty on Heliocentric Radial Velocity (km/s) km/s stat.error;spect.dopplerVeloc;pos.heliocentric short nullable peculiar_type Flag Indicates Peculiarities src.morph.type short nullable bii Galactic Latitude degree pos.galactic.lat double nullable major_axis Major Axis Diameter (arcmin) arcmin phys.size.smajAxis float nullable bar_type Flag Indicates Bar Type src.class char nullable ugc_number UGC Number meta.id int nullable notes Notes meta.note char nullable luminosity_class Luminosity Classes meta.code;phys.luminosity char nullable ref_radial_velocity Flag Indicates Velocity Reference meta.bib;spect.dopplerVeloc;pos.heliocentric char nullable ugc_multiplicity Multiplicity Index on UGC meta.code.multip char nullable ref_bmag Flag [BHMS] Indicates Magnitude Reference meta.bib;phot.mag;em.opt.B char nullable class Browse Object Classification src.class short nullable minor_axis Minor Axis Diameter (arcmin) arcmin phys.size.sminAxis float nullable morph_type Revised Hubble Type src.morph.type short nullable lii Galactic Longitude degree pos.galactic.lon double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable