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Detailed Description of J/A+A/380/441 : Galaxies behind Southern Milky Way. II. (Woudt+, 2001)
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Note : this is the description file of the original catalog.
This HTML page corresponds well to the original description, but some minor
changes in the format may have been introduced in the FITS output
files in order to allow for arithmetic operations on quantities
such as coordinates and times. h:m:s and d:m:s units are normally
converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the
units; the value given in the HTML files supersedes the value indicated in the ReadMe
file for this catalogue.
J/A+A/380/441 Galaxies behind Southern Milky Way. II. (Woudt+, 2001)
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A catalogue of galaxies behind the Southern Milky Way.
II. The Crux and Great Attractor regions (l=289-338°)
Woudt P.A., Kraan-Korteweg R.C.
<Astron. Astrophys. 380, 441 (2001)>
=2001A&A...380..441W
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ADC_Keywords: Clusters, galaxy ; Galaxies, optical ; Galaxies, IR ; Morphology
Keywords: catalogues - surveys - ISM: dust, extinction -
galaxies: fundamental parameters -
cosmology: large-scale structure of the Universe
Abstract:
In this second paper of the catalogue series of galaxies behind the
southern Milky Way, we report on the deep optical galaxy search in the
Crux region (289°<~l<~318° and -10°<~b<~10°) and the
Great Attractor region (316°<~l<~338° and
-10°<~b<~10°). The galaxy catalogues are presented, a brief
description of the galaxy search given, as well as a discussion on the
distribution and characteristics of the uncovered galaxies. A total of
8183 galaxies with major diameters D>~0.2 arcmin were identified in
this ~850 square degree area: 3759 galaxies in the Crux region and
4423 galaxies in the Great Attractor region. Of the 8183 galaxies, 229
(2.8%) were catalogued before in the optical (3 in radio) and 251
galaxies have a reliable (159), or likely (92) cross-identification in
the IRAS Point Source Catalogue (3.1%). A number of prominent
overdensities and filaments of galaxies are identified. They are not
correlated with the Galactic foreground extinction and hence
indicative of extragalactic large-scale structures. Redshifts obtained
at the South African Astronomical Observatory (SAAO) for 518 of the
newly catalogued galaxies in the Crux and Great Attractor regions
(Fairall et al., 1998, Cat. J/A+AS/127/463; Woudt et al., 1999, Cat.
J/A+A/352/39) confirm distinct voids and clusters in the area here
surveyed. With this optical galaxy search, we have reduced the width
of the optical `Zone of Avoidance' for galaxies with
extinction-corrected diameters larger than 1.3' from extinction levels
A_B>~1.0mag to A_B>~3.0mag: the remaining optical Zone of Avoidance is
now limited by |b|<~3° (see Fig. 16).
File Summary:
FileName Lrecl Records Explanations
× 80 . This file
× ReadMe 80 . This file
× table1.dat 163 8183 Galaxies behind the southern Milky Way
× table3.dat 140 342 IRAS galaxies behind the southern Milky Way
See also:
VII/209 : Galaxies Behind the Milky Way (Saito+ 1990-91; Roman+ 1996-98)
J/A+AS/141/123 : Galaxies behind Southern Milky Way (Kraan-Korteweg 2000)
J/A+A/352/39 : Great Attractor region redshifts (Woudt+, 1999)
J/A+AS/127/463 : Crux region redshifts (Fairall+ 1998)
J/ApJS/89/57 : IRAS galaxies behind southern Milky Way (Yamada+, 1993)
II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
2- 5 I4 --- WKK98 Running number of identified galaxy (1)
7- 14 A8 --- OtherID Other optical identification
16- 17 A2 --- Code Code for cross-identification in IRAS PSC (G1)
20- 21 I2 h RA1h Right ascension (B1950)
23- 24 I2 min RA1m Right ascension (B1950)
26- 29 F4.1 s RA1s Right ascension (B1950)
31 A1 --- DE1- Declination sign (B1950)
32- 33 I2 deg DE1d Declination (B1950)
35- 36 I2 arcmin DE1m Declination (B1950)
38- 39 I2 arcsec DE1s Declination (B1950)
42- 43 I2 h RAh Right ascension (J2000)
45- 46 I2 min RAm Right ascension (J2000)
48- 51 F4.1 s RAs [0/60] Right ascension (J2000)
53 A1 --- DE- Declination sign (J2000)
54- 55 I2 deg DEd Declination (J2000)
57- 58 I2 arcmin DEm Declination (J2000)
60- 61 I2 arcsec DEs [0/60] Declination (J2000)
64- 69 F6.2 deg GLON Galactic longitude
71- 76 F6.2 deg GLAT Galactic latitude
79- 81 A3 --- ESOField ESO/SRC Field number
83- 88 F6.1 mm Xpos X coordinate in mm from center of field
90- 95 F6.1 mm Ypos Y coordinate in mm from center of field
97- 99 I3 arcsec amaj Major axis (arcsec)
100 A1 --- --- [x]
101-103 I3 arcsec amin Minor axis (arcsec)
105-108 F4.1 mag B25mag Estimated B25 magnitude
110-113 F4.2 mag E(B-V) Extinction E(B-V) according to Schlegel et al.
1998ApJ...500..525S
115-126 A12 --- MType Morphological type (2)
127-162 A36 --- Rem Remarks
Note (1): No. 1 to 3760: The Crux region
No. 3761 to 8183: The Great Attractor region
Note (2): Morphological classification (from Kraan-Korteweg, 2000,
Cat. J/A+AS/141/123)
The morphological types are coded similarly to the precepts of the RC2
(de Vaucouleurs et al., 1976, Cat. VII/112). Due to the varying
foreground extinction a homogenous and detailed type classification
could not always be accomplished and some codes were added.
- In the first column (byte 115), a question mark denotes the
uncertainty about the galaxian nature of the object.
- In the second column (bytes 117-121), the code F for the Hubble type
E-S0 (T=-3 in the RC2 classification) was added to the normal
designations of E, L, S and I.
- In byte 131, the subtypes E, M and L are introduced next to the
general subtypes 0 to 9. They stand for early spiral (S0/a-Sab),
middle spiral (Sb-Sd) and late spiral or irregular (Sdm-Im). The
cruder subtypes are a direct indication of the fewer details visible
on the obscured galaxy image.
- The questionmark at the end marks uncertainty of the main type, the
colon uncertainty in the subtype.
- The third column (byte 123) marks the orientation of the galaxy:
E, N, F, V stands for edge-on, nearly edge-on, face-on and nearly
face-on.
- The fourth subcolumn (byte 125) indicates the superposition of a
single star (1) or multiple stars (S) on the galaxy.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1 A1 --- --- [I] for IRAS name
2- 11 A10 --- IRAS Identification in IRAS PSC (Cat. II/125)
14 A1 --- Yamada [Y*] Cross-identification in Yamada et al.,
1993, Cat. J/ApJS/89/57 (1)
17- 18 A2 --- Code Category of identification (G1)
20- 23 I4 --- WKK98 Running number of identified galaxy
(from Table 1)
25 A1 --- ESO [L] Identification in Lauberts catalog
(1982, Cat. VII/34)
28- 29 I2 h RA1h Right ascension (B1950)
31- 32 I2 min RA1m Right ascension (B1950)
34- 37 F4.1 s RA1s Right ascension (B1950)
39 A1 --- DE1- Declination sign (B1950)
40- 41 I2 deg DE1d Declination (B1950)
43- 44 I2 arcmin DE1m Declination (B1950)
46- 47 I2 arcsec DE1s Declination (B1950)
50- 55 F6.2 deg GLON Galacitic longitude
57- 62 F6.2 deg GLAT Galacitic latitude
64- 66 I3 arcsec amaj Major axis (arcsec)
67 A1 --- --- [x]
68- 70 I3 arcsec amin Minor axis (arcsec)
72- 75 F4.1 mag B25mag Estimated B25 magnitude
79- 83 A5 --- MType Morphological type
85- 87 I3 arcsec DeltaPos Positional offset in arcsec (IRAS - optical)
89- 94 F6.2 Jy F12um Flux density at 12 micron
96-101 F6.2 Jy F25um Flux density at 25 micron
103-108 F6.2 Jy F60um Flux density at 60 micron
110-115 F6.2 Jy F100um Flux density at 100 micron
118 A1 --- q_F12um Flux quality at 12 micron (2)
120 A1 --- q_F25um Flux quality at 25 micron (2)
122 A1 --- q_F60um Flux quality at 60 micron (2)
124 A1 --- q_F100um Flux quality at 100 micron (1)
127-132 F6.2 --- IRAS1 IRAS color 1: (f12 x f25) / (f60 x f60)
134-139 F6.2 --- IRAS2 IRAS color 2: f100 / f60
Note (1): Y: galaxy listed by Yamada et al., 1993, Cat. J/ApJS/89/57
*: the IRAS PSC source satisfies all the Yamada et al. selection
criteria, yet was not listed in Yamada's catalogue.
Note (2): The IRAS flags are coded as:
1 = lower limit
2 = uncertain flux
3 = good flux quality
Global notes:
Note (G1): Quality of the IRAS cross-correlation is explained in the paper.
They are schematically:
I = certain IRAS connection
P = possible match in the IRAS PSC
Q = questionable (unlikely) match in the IRAS PSC
The code may be followed by a number indicating the equally
possible galaxy counterparts for a given IRAS source.
N = cross-identification is not accepted
History: On 12-Apr-2002, in table1.dat,
For WKK98 2542, L174-001 modified in L174-B 1
For WKK98 7328, FGC1256 modified in FGCE 1256
Acknowledgements: Patrick Woudt pwoudt@artemisia.ast.uct.ac.za
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(End) Patricia Bauer [CDS] 06-Nov-2001