ADC/CDS Standard Document for Catalog:/journal_tables/AJ/116/1094/
ADC/CDS Standard Document for Catalog:| 1. Use the ADC Data Viewer Suite to visualize the data. |
|
| 2. Get the data files via anonymous FTP. (See Note.) |
|
J/AJ/116/1094 MAPS-PP catalog of galaxies (Cabanela+, 1998)
================================================================================
Galaxy alignments in the Pisces-Perseus supercluster revisited.
Cabanela J.E., Aldering G.
<Astron. J. 116, 1094 (1998)>
=1998AJ....116.1094C (SIMBAD/NED BibCode)
================================================================================
ADC_Keywords: Clusters, galaxy ; Galaxy catalogs ; Morphology ; Magnitudes
Keywords: galaxies: formation - galaxies: structure
Abstract:
A search for preferential galaxy alignments in the Pisces-Perseus
Supercluster (PPS) is made using the Minnesota Automated Plate Scanner
Pisces-Perseus Survey (MAPS-PP). The MAPS-PP is a catalog of
~1400 galaxies with a (roughly) isophotal diameter greater than 30"
constructed from digitized scans of the blue and red plates of the
Palomar Observatory Sky Survey covering the PPS. This is the largest
sample of galaxies applied to a search of galaxy alignments in this
supercluster, and it has been used in combination with previously
published redshifts to construct the deepest PPS galaxy luminosity
function to date.
While previous studies have relied extensively on catalogs with
visually estimated parameters for both sample selection and
determination of galaxy orientation, the MAPS-PP uses selection
criteria and measurements that are entirely machine and computer
based. Therefore, it is not susceptible to some of the biases, such as
the diameter inclination effect, known to exist in some other galaxy
catalogs. The presence of anisotropic galaxy distributions is
determined by use of the Kuiper statistic, a robust alternative to the
chi^2 statistic more traditionally used in these studies.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
-------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 104 1400 The MAPS-PP catalog of galaxies: APS parameters
table3.dat 70 1400 Cross-identifications and additional galaxy
parameters
--------------------------------------------------------------------------------
See also:
VII/193 : The CfA Redshift Catalogue (ZCAT) (Huchra+ 1995)
VII/198 : Mark III Catalog of Galaxy Peculiar Velocities (Willick+ 1997)
J/A+A/286/17 : 21cm obs. of galaxies in Psc-Per Supercl. (Seeberger+ 1994)
J/AJ/105/1271 : Pisces-Perseus supercluster. VI (Giovanelli+, 1993)
J/AJ/105/1251 : Pisces-Perseus supercluster. V. (Wegner+, 1993)
http://aps.umn.edu/ : APS databases
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 A14 --- Source Source name (1)
16- 17 I2 h RAh Right ascension (1950.0)
19- 20 I2 min RAm Right ascension (1950.0)
22- 25 F4.1 s RAs Right ascension (1950.0)
27 A1 --- DE- Declination sign (1950.0)
28- 29 I2 deg DEd Declination (1950.0)
31- 32 I2 arcmin DEm Declination (1950.0)
34- 37 F4.1 arcsec DEs Declination (1950.0)
39- 43 F5.3 --- Eps Ellipticity of the galaxy, from the passband
indicated by the galaxy name
45- 49 F5.3 --- e_Eps rms uncertainty on Eps
51- 55 F5.1 deg PA Position angle from the passband indicated by
the galaxy name
57- 61 F5.1 deg e_PA rms uncertainty on PA
63- 67 F5.1 arcsec aO ? O-plate major axis
69- 74 F6.2 arcsec aE ? E-plate major axis
76- 80 F5.2 mag mO ? O-plate magnitude
82- 86 F5.2 mag mE ? E-plate magnitude
88- 92 F5.2 mag mO-mE ? Difference magnitude O-E
94- 97 F4.2 --- chi2O ? O chi-2 value
99-103 F5.2 --- chi2E ? E chi-2 value
--------------------------------------------------------------------------------
Note (1): Some rasters of multiple merged galaxies were split when the
individual galaxies were large enough to make the diameter cut.
These split rasters are indicated by an A, B, or C suffix.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 A14 --- Source Source designation (1)
16- 27 A12 --- Name Catalog name
29- 33 I5 km/s cz ? Heliocentric radial velocity
36- 37 I2 --- Ttype ? Morphological Type (2)
39- 41 I3 --- Cat ? ZCAT number or other catalogs (3)
43- 46 F4.2 mag AV Galactic extinction
48- 51 F4.1 deg North Direction of the true North, relative to
machine axes
53- 56 F4.2 deg Rridge Radius of the closest ridgeline point
58- 62 F5.2 deg-2 r10 r_10_ surface density in galaxies/deg^2^ (4)
64- 65 I2 --- OFlag [-5/5]? O quality flag (5)
67- 68 I2 --- EFlag [-5/5]? E quality flag (5)
--------------------------------------------------------------------------------
Note (1): Some rasters of multiple merged galaxies were split when the
individual galaxies were large enough to make the diameter cut.
These split rasters are indicated by an A, B, or C suffix.
Note (2): Morphological types in zcat:
-7 = Unclassified Elliptical
-5 = E, and dwarf E
-4 = E/SO
-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
12 = Compact Irregular, Extragalactic HII Region
15 = Peculiar, Unclassifiable
20 = S..., Sc-Irr, Unclassified Spiral
99
Note (3): Source numbers are identical to ZCAT (Cat. <VII/193> source numbers
for values less than 100
101: Giovanelli & Haynes, 1993, Cat. <J/AJ/105/1271>
102: Giovanelli & Haynes H{alpha} observations
103: Sakai et al., 1994AJ....108...33S
200: RC3, Cat. <VII/155>
301: W91CL, Mark III catalog (Cat. <VII/198>)
302: W91PP, Mark III catalog (Cat. <VII/198>)
303: WCF, Mark III catalog (Cat. <VII/198>)
Note (4): The angular separation between each galaxy and its tenth closest
neighbor, r_10_, was determined. Assuming there are 11 galaxies
within a circle of radius r_10_, the number of galaxies per
square degree is readily computed.
Note (5): The absolute values of the quality flags indicates:
1: good fit
2: prominent dust lane or non-elliptical isodensity affects fit
3: irregular appearance affects fit
4: prominent spiral pattern affects fit
5: prominent galaxy bar affects fit
If the sign of the flag is negative, the magnitudes include
catalog or estimate magnitudes
--------------------------------------------------------------------------------
History: From AJ electronic version
================================================================================
(End) James Marcout, Patricia Bauer [CDS] 19-Nov-1998