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J/AJ/112/1803                            Large Scale Structure (Marzke+ 1996)

Large-Scale Structure at Low Galactic Latitude Marzke R.O., Huchra J.P., Geller M.J. <Astron. J. 112, 1803 (1996)> =1996AJ....112.1803M
ADC_Keywords: Clusters, galaxy Abstract: We have extended the CfA Redshift Survey to low galactic latitudes to investigate the relation between the Great Wall in the North Galactic Cap and the Perseus-Pisces chain in the South Galactic Cap. We present redshifts for 2020 galaxies in the Catalogue of Galaxies and of Clusters of Galaxies (Zwicky et al. 1961-68, CGCG, Cat. VII/4) in the following regions: 4h≤RA≤8h, 17h≤Dec.≤20h, 0deg≤Dec.≤45deg. In these regions, the redshift catalogue includes 1664 galaxies with B(0)≤15.5 (of which 820 are newly measured) and is 97% complete. We also include redshifts for an additional 356 galaxies in these regions with B(0)>15.5; of these, 148 were previously unmeasured. The CGCG samples the galaxy distribution down to b(II)∼10deg. In this paper, we discuss the acquisition and reduction of the spectra, and we examine the qualitative features of the redshift distribution. The Great Wall and the Perseus-Pisces chain are not simply connected across the Zone of Avoidance. These structures, which at first appear to be coherent on scales of ∼100h-1Mpc or more, actually form the boundaries of neighboring voids of considerably smaller scale, approximately 50h-1Mpc. The structures delineated by our optically-selected sample are qualitatively similar to those detected by the far-infrared-selected IRAS 1.2 Jansky Survey (Fisher et al., 1995ApJS..100...69F). Although the IRAS survey probes more deeply into the Zone of Avoidance, our optically-selected survey provides better sampling of structures at b_(II)≥10deg. (Copyright) 1996 American Astronomical Society. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 97 1664 The Galactic Plane Survey [B(0)≤15.5] table2.dat 97 356 The Galactic Plane Survey [B(0)≥15.5] notes.dat 38 78 Notes to tables 1 and 2 refs.dat 182 72 Velocity sources (Table 3)
See also: VII/193 : The CfA Redshift Catalogue, Version June 1995 (Huchra+ 1995) Byte-by-byte Description of file: table1.dat table2.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Name Source name 12 A1 --- Note [*] indicates a note in file "notes.dat" 13- 14 I2 h RAh Right Ascension (1950) 15 A1 --- --- Always ':' 16- 17 I2 min RAm Right Ascension (1950) 18 A1 --- --- Always ':' 19- 22 F4.1 s RAs Right Ascension (1950) 24 A1 --- DE- Sign, Declination 25- 26 I2 deg DEd Declination (1950) 27 A1 --- --- Always ':' 28- 29 I2 arcmin DEm Declination (1950) 30 A1 --- --- Always ':' 31- 32 I2 arcsec DEs Declination (1950) 34- 39 F6.2 mag m(zw) Zwicky B(0) magnitude 40 A1 --- r_m(zw) *Source code for m(zw) (if not from CGCG) 42- 47 I6 km/s HRV ? Heliocentric radial velocity, cz 49- 52 I4 km/s e_HRV ? Error in HRV 55- 58 A4 --- r_HRV Redshift source code (see refs.dat) 61- 62 A2 --- Morph *Morphological type 64 A1 --- Bar *Bar type 66 A1 --- Lum *Luminosity class 68 A1 --- Pec *Peculiarities 70- 74 F5.1 arcmin D1 ? Major axis diameter 76- 79 F4.1 arcmin D2 ? Minor axis diameter 81- 86 A6 --- UGC UGC (Cat. VII/26>) number 89- 97 A9 --- Comments *Comments & references to other catalogues
Note on r_m(zw): Source code for magnitude if not from CGCG. "H" refers to magnitudes split by eye by JPH; "K" refers to magnitudes from Kirshner et al. (1978, Cat. J/AJ/83/1549; 1983, J/AJ/88/1285). Note on Morph: Morphological types are de Vaucouleurs' T types from the RC2, Uppsala Catalog and the Revised Shapley-Ames Catalog. Some additional types have been defined for peculiar and untyped objects and for objects that are in catalogues of extragalactic objects but are really galactic in nature. Additional types for galaxies in the CfA Redshift Survey region (described below) have been estimated by J. Huchra from glass copies of the Palomar Sky Survey. Types for southern galaxies come from both the ESO catalog and the Vorontsov-Velyaminov Catalogs. Morphological types codes are: -7 Elliptical (Unclassified) -6 Compact Elliptical -5 E, and dwarf E -4 E/S0 -3 L-, SO- -2 L, SO -1 L+, SO+ 0 SO/a, SO-a 1 Sa 2 Sab 3 Sb 4 Sbc 5 Sc 6 Scd 7 Sd 8 Sdm 9 Sm, Magellanic Spiral 10 Im, Irr I, Magellanic Irregular, Dwarf Irregular 11 Compact Irregular, Extragalactic HII Region 15 Peculiar, Unclassifiable 16 Irr II 20 S..., Sc-Irr, Unclassified Spiral 25 Plate Flaw, Star, etc. misclassified as galaxy 33 Reflection Nebula, misclassified as galaxy 32 HII Region misclassified as galaxy 30 Planetary Nebula, misclassified as galaxy 40 Part of a galaxy, e.g. a bright HII region like N5471 Note on Bar: A unbarred X mixed type B barred Note on Lum: Luminosity Classes (for Spirals and Irregulars) 1 I 6 III-IV 2 I-II 7 IV 3 II 8 IV-V 4 II-III 9 V 5 III Note on Pec: P = Peculiar S = No inner ring R = Ringed (outer) T = Pseudo inner ring D = Double or Multiple Note on Comments: If the comment is "See Notes," then there is a note about a superposed star in the corresponding notes file.
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Name Source name 15- 38 A24 --- Note Superposed star(s) name(s) or other note
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 4 A4 --- Source Redshift source code 8-182 A175 --- Reference Reference to redshift source
Origin: AAS CD-ROM series, Volume 8, 1997 Lee Brotzman [ADS] 30-Mar-1997
(End) [CDS] 03-Jul-1997
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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