Cdrom/AJ/V105/P1251 Pisces-Perseus Supercluster. V. (Wegner+ 1993) a survey of the Pisces-Perseus Supercluster. V




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CDROM/AJ/V105/P1251 Pisces-Perseus Supercluster. V. (Wegner+ 1993) ================================================================================ A Survey of the Pisces-Perseus Supercluster. V. The Declination Strip +33.5 deg to +39.5 deg and the Main Supercluster Ridge Gary Wegner, Martha P. Haynes & Riccardo Giovanelli <1993, AJ, 105, 1251> =1993AJ....105.1251W ================================================================================ Abstract: Measurements of 544 radial velocities, 229 optical and 315 in the 21 cm H I line, are presented for galaxies, mostly in the declination strip +33.5 deg < Dec < +39.5 deg in the region of the Pisces-Perseus supercluster. These are combined with other available data to investigate the linear structure identified as the main supercluster ridge. The main ridge of the supercluster extends at least 50 h^-1 Mpc before it disappears into the zone of avoidance east of Perseus. Confinement both on the plane of the sky and in the velocity dimension imply an axial ratio of greater than ten to one and an inclination with respect to the plane of the sky of less than about 12 degrees. The smoothed volume density contrast over the whole ridge averages more than a factor of 6 relative to the average density derived for the whole sample. The relative proximity, low inclination to the plane of the sky, and high contrast relative to the foreground and background, help to make the Pisces-Perseus filament one of the most prominent features in the extragalactic sky on large scales. File Summary: -------------------------------------------------------------------------------- File Name Lrecl Records Explanations -------------------------------------------------------------------------------- table1.dat 88 229 Galaxies with new optical redshifts table1.tex 237 329 TeX version of table1.dat table2.dat 129 315 Parameters of objects observed at 21 cm table2.tex 254 495 TeX version of table2.dat notes2.dat 79 39 Notes for table2.dat notes2.tex 76 43 TeX version of notes2.dat -------------------------------------------------------------------------------- Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 7 A7 --- CGCG *Identification in the CGCG 8-13 I6 --- UGC Uppsala General Catalog (UGC) entry number 14 1X --- --- Blank 15 A1 --- NI_Cat [NI] NGC or IC catalog indicator 16-19 I4 --- NI NGC or IC catalog number 20 1X --- --- Blank 21-22 F2.0 h RAh *Hours of RA (1950) 23-24 F2.0 min RAm Minutes of RA 25-28 F4.1 s RAs Seconds of RA 29 1X --- --- Blank 30 A1 --- DE- Sign of Dec (1950), always '+' 31-32 F2.0 deg DEd Degrees of Dec 33-34 F2.0 arcmin DEm Arcminutes of Dec 35-36 F2.0 arcsec DEs Arcseconds of Dec 37 1X --- --- Blank 38-40 A3 --- Morph *Morphological type code index 41-44 F4.2 arcmin MajAxis *Major diameter 45-49 F5.2 arcmin MinAxis *Minor diameter 50-52 I3 deg Inc *[]? Inclination 53-58 F6.2 mag Mag Magnitude given in the CGCG or the UGC 59-64 F6.2 mag m_c *Corrected magnitude, m(c) 65-70 I6 km/s Vsun Heliocentric velocity 71-74 I4 km/s Sigma *Standard deviation of mean for lines measured 75 1X --- --- Blank 76 A1 --- Lines *[ea] Redshift from emission or absorption 77-82 I6 km/s V0 *Local Group velocity, V(0) 83-88 F6.2 --- Lum *Luminosity, h^2 L -------------------------------------------------------------------------------- Notes for file: table1.dat -------------------------------------------------------------------------------- CGCG: Identification in the Catalog of Galaxies and Clusters of Galaxies (Zwicky et al. 1961-68: hereafter referred to as CGCG), that is the field number and then the entry number within that field RAh: Hours of RA (1950). For galaxies brighter than m=14.5, positions were obtained from Dressel & Condon 1976 [ApJS, 31, 187]. For others, coordinates were obtained from the CGCG or, when higher accuracy than that of the CGCG is manifest, they were obtained from the Palomar Sky Survey (PSS) prints using a standard overlay program, with an estimated accuracy of 10". Morph: Morphological type code index based on the simple scheme: 0 - Elliptical, 1 - SO, 3 - Sa, 5 - Sb, 7 - Sc, 9 - Irregular, 10 - Peculiar, with intermediate types allowed. A "B" indicates the presence of a bar. MajAxis, MinAxis: Major and minor diameters from the UGC where available or else measured by eye from the PSS prints. Inc: Inclination derived from the axial ratio following Haynes & Giovanelli [1984, AJ, 89, 758]; hereafter referred to as HG84 m_c: Corrected magnitude, m(c), after applying the corrections for galactic and internal extinction, redshift and systematic effects as discussed by HG84. Sigma: For emission line-derived redshifts, the standard deviation of the mean for all the lines measured, or +/- 60 km/s, which is the estimated error for a single line in this sample. For absorption line-derived redshifts, errors are estimated from the JKFOUR program, to a minimum acceptable value of +/- 25 km/s. Lines: A simple indicator of whether the spectral features used to derive the redshift were seen in emission (e) or absorption (a). For a handful of galaxies, velocities were derived from two absorption line spectra (x) and combining both absorption and emission lines (y). V0: Local Group velocity, V(0), assuming a correction for the Sun's motion of 300 sin l cos b, where l and b are the galactic longitude and latitude. Lum: Luminosity, h^2 L, in logarithmic solar units, derived from m(c) and V(0). -------------------------------------------------------------------------------- Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 7 A7 --- CGCG *Identification in the CGCG 8- 13 I6 --- UGC Uppsala General Catalogue (UGC) entry number 14 A1 --- m_UGC UGC component designation 15 A1 --- NI_Cat [NI] NGC or IC catalog indicator 16- 19 I4 --- NI NGC or IC catalog number 20 1X --- --- Blank 21- 22 F2.0 h RAh Hours of RA (1950) 23- 24 F2.0 min RAm Minutes of RA 25- 28 F4.1 s RAs Seconds of RA 29 1X --- --- Blank 30 A1 --- DE- Sign of Dec (1950), always '+' 31- 32 F2.0 deg DEd Degrees of Dec 33- 34 F2.0 arcmin DEm Arcminutes of Dec 35- 36 F2.0 arcsec DEs Arcseconds of Dec 37 1X --- --- Blank 38- 40 A3 --- Morph *Morphological type code index 41- 45 F5.2 arcmin MajAxis *[]? Major diameter 46- 50 F5.2 arcmin MinAxis *[]? Minor diameter 51- 53 I3 deg Inc *[]? Inclination 54- 58 F6.2 mag Mag []? Magnitude given in the CGCG or the UGC 59- 64 F6.2 mag m_c *[]? Corrected magnitude, m(c) 65- 70 I6 km/s Vsun *21 cm line heliocentric velocity 71- 76 I6 km/s V0 *Adopted Local Group velocity, V(0) 77- 80 I4 km/s W1 *[]? Observed 21 cm profile width, W1 81- 84 I4 km/s W2 *[]? Observed 21 cm profile width, W2 85- 88 I4 km/s Wc *[]? Corrected 21 cm profile width 89- 94 F6.2 Jy.km/s Fobs []? Observed 21 cm line flux, Fobs 95-100 F6.2 Jy.km/s Fc *[]? Corrected 21 cm line flux, Fc 101-105 F5.2 mJy Sigma []? rms noise in baseline 21 cm line profile 106-110 F5.2 --- SNR *[]? Signal-to-noise ratio, HI emission spectrum 111-116 F6.2 --- Lum *[]? Log of optical luminosity in solar units 117-122 F6.2 --- M_H *[]? Logarithm of HI mass in solar units 123 1X --- --- Blank 124 A1 --- Tele *Telescope identification code for HI obs. 125 1X --- --- Blank 126 A1 --- Qual *Quality code for HI detection 127 1X --- --- Blank 128 A1 --- Ref *Reference code for HI data 129 A1 --- Note Note flag files NOTES2.DAT or NOTES2.TEX -------------------------------------------------------------------------------- Notes for file: table2.dat -------------------------------------------------------------------------------- CGCG: Identification in the Catalog of Galaxies and Clusters of Galaxies (Zwicky et al. 1961-68: hereafter referred to as CGCG), that is the field number and then the entry number within that field Morph: Morphological type code index based on the simple scheme: 0 - Elliptical, 1 - SO, 3 - Sa, 5 - Sb, 7 - Sc, 9 - Irregular, 10 - Peculiar, with intermediate types allowed. A "B" indicates the presence of a bar. MajAxis, MinAxis: Major and minor diameters from the UGC where available or else measured by eye from the PSS prints. Inc: Inclination derived from the axial ratio following Haynes & Giovanelli [1984, AJ, 89, 758]; hereafter referred to as HG84 m_c: Corrected magnitude, mc, after applying the corrections for galactic and internal extinction, redshift and systematic effects as discussed by HG84. Vsun: 21 cm line heliocentric velocity, Vsun, measured as the midpoint of the emission profile at a level of 50% of the mean signal intensity. V0: Adopted Local Group velocity, V(0) assuming a correction for the Sun's motion of 300 sin l cos b, where l and b are the galactic longitude and latitude. The adopted heliocentric velocity is the 21 cm velocity if the object is a high quality detection; if not, the optical velocity is adopted, when available. W1: Observed 21 cm profile width, W1, measured at a level of 50% of the mean signal intensity. W2: Observed 21 cm profile width, W2, measured at a level of 20% of the peak signal intensity. Wc: 21 cm profile width corrected for viewing inclination and to the rest frame of the observer, Wc. Fc: 21 cm line flux, Fc, after correction for pointing, beam dilution, and internal absorption following HG84. SNR: Signal-to-noise ratio of HI emission spectrum, measured as the ratio of peak signal flux to Sigma, where available. Lum: Logarithm of optical luminosity in solar units, log10(h^2 L), with h = H0/100 km/s/Mpc. M_H: Logarithm of HI mass in solar units, log10(h^2 M(H)). Tele: Telescope identification code for HI observations: 0 -- Arecibo 305 m with dual circular feed, 1 -- Green Bank 91 m, 2 -- Effelsberg 100 m, and B -- Arecibo 305 m with linear feed major axis mapping. Qual: Quality code for HI detection: 1 -- high quality detection, 2 -- marginal to poor detection, 3 -- flux and velocity ok, but profile unsuitable for use in T-F relation, 4 -- HI seen in absorption, 5 -- confused with neighbor. Ref: Reference code for HI data. The HI data reported here come from one of the following sources: 1 -- This survey, 2 -- Northern Pisces-Perseus region (Haynes et al. 1988, AJ, 95, 607), 3 -- Isolated galaxy survey (HG84), 4 -- Survey of large angular diameter galaxies (Hewitt et al. 1983, AJ, 88, 272, AJ, 88, 272), 5 -- Magri (1990, Ph.D. thesis, Cornell University), and 6 -- Sc galaxy survey (in preparation). -------------------------------------------------------------------------------- ================================================================================ (End) Lee Brotzman [ADS] 27-Feb-1995


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