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VII/221 PSCz catalog (Saunders+, 2000)
================================================================================
The PSCz catalogue
Saunders W., Sutherland W.J., Maddox S.J., Keeble O., Oliver S.J.,
Rowan-Robinson M., McMahon R.G., Efstathiou G.P., Tadros H., White S.D.M.,
Frenk C.S., Carraminana A., Hawkins M.R.S.
<Mon. Not. R. Astron. Soc. 317, 55 (2000)>
=2000MNRAS.317...55S
================================================================================
ADC_Keywords: Infrared sources ; Photometry, infrared ; Galaxies, optical;
Redshifts ; Surveys
Keywords: catalogues - surveys - galaxies: distances and redshifts, clustering -
large-scale structure of the Universe
Description:
The PSCz survey consists of redshifts, infra-red and optical
photometry, and assorted other information for 18351 IRAS sources,
mostly selected from the Point Source Catalog. The survey was designed
to select almost all galaxies with flux brighter than 0.595Jy at 60
microns, over the 84% of the sky with extinction small enough
that reliable and complete optical identification and spectroscopy was
possible. Some of the sources are not galaxies and some are multiple
entries for the same galaxy as described below. There are in total
15411 galaxies or possible galaxies, for which redshifts are available
for 14677. The galaxies without redshift are mostly distant or at low
latitude, as described below. Many of these galaxies have now been
observed as part of the BTP project (Saunders et al 1999,
astro-ph/9909174 "The Behind the Plane Survey"), and their redshifts
will be included in future revisions of the catalogue.
The main catalogue is "pscz.dat". There is also a short version
of the catalogue, "psczvs.dat", containing sufficient information
for most studies. They correspond to the version 2.2.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
notes.txt 79 468 Explanatory notes
pscz.dat 533 18351 Main catalogue
psczvs.dat 100 18411 Short version of main catalogue
psczcg.dat 533 60 Sources close to coverage gap
psczcgvs.dat 100 60 Short version of psczcg.dat
psczcat3.tex 836 849 Text for the accompanying paper
psczcat3.ps 132 203058 Postscript version
pscz2_2.dat 141 73404 Original version of pscz.dat with 4 lines/source,
explained in "notes.txt"
psczmask.dat 78 506 *Default mask defining the areas with inadequate
or confused IRAS coverage (10.56sr)
himask.dat 78 883 *More conservative mask for higher completeness
(9.06sr)
qcd.f 80 1112 Routines for using mask, coordinate transforms etc
g2bin.f 45 9 (l,b) to bin number
psi.f 76 18 Estimated selection function
igalrefs.txt 61 48 Redshift references
ilg.dat 124 11 Local Group galaxies deliberately excluded
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Note on psczmask.dat, himask.dat: list of excluded 'lune bins' and are read
in by the fortran77 routine rdmask in "qcd.f" (see file "notes.txt")
--------------------------------------------------------------------------------
See also:
II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)
II/174 : IRAS 2Jy Redshift Survey Data File (Strauss+ 1992)
VII/185 : IRAS 1.2 Jy IRAS Redshift Survey (Strauss+ 1990,92,95)
J/MNRAS/253/485 : QMW IRAS galaxy catalogue (QIGC) (Rowan-Robinson+, 1991)
J/MNRAS/308/897 : QDOT all-sky IRAS galaxy redshift survey (Lawrence+, 1999)
Byte-by-byte Description of file: psczcg.dat pscz.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 12 A11 --- CNAME *Name e.g. Q12345+4856
14- 15 I2 h RAh Right ascension B1950
16- 17 I2 min RAm Right ascension B1950
18- 20 I3 0.1s RAds Right ascension B1950
22 A1 --- DE- Declination sign B1950
23- 24 I2 deg DEd Declination B1950
25- 26 I2 arcmin DEm Declination B1950
27- 28 I2 arcsec DEs Declination B1950
29- 36 F8.2 Jy S12 Flux at 12um
37- 44 F8.2 Jy S25 Flux at 25um
45- 52 F8.2 Jy S60 Flux at 60um
53- 60 F8.2 Jy S100 Flux at 100um
62 I1 --- q_S12 *[1,9] Flux origin and quality flag at 12um
63 I1 --- q_S25 *[1,9] Flux origin and quality flag at 25um
64 I1 --- q_S60 *[1,9] Flux origin and quality flag at 60um
65 I1 --- q_S100 *[1,9] Flux origin and quality flag at 100um
67 I1 --- SES12 [0,8] Small Extended Source flag at 12um
68 I1 --- SES25 [0,8] Small Extended Source flag at 25um
69 I1 --- SES60 [0,8] Small Extended Source flag at 60um
70 I1 --- SES100 [0,8] Small Extended Source flag at 100um
72- 74 I3 % e_S12 Flux uncertainty at 12um
75- 77 I3 % e_S25 Flux uncertainty at 25um
78- 80 I3 % e_S60 Flux uncertainty at 60um
81- 83 I3 % e_S100 Flux uncertainty at 100um
85- 87 I3 arcsec PosMin Minor axis of 2{sigma} error ellipse
88- 90 I3 arcsec PosMax Major axis of 2{sigma} error ellipse
91- 93 I3 deg PosPA Position angle E of N of major axis
of error ellipse
95 I1 --- Cirr1 *Cirrus flag
96 I1 --- Cirr2 *Cirrus flag
97- 99 I3 MJy/sr Cirr3 *Cirrus flag
101 A1 --- CC1 [A-N X] Correlation Coefficient at 12um
102 A1 --- CC2 [A-N X] Correlation Coefficient at 25um
103 A1 --- CC3 [A-M X1] Correlation Coefficient at 60um
104 A1 --- CC4 [A-N X1] Correlation Coefficient at 100um
106 A1 --- CONF [0-9 ACDEF] Confusion flag, hex encoded
107 A1 --- DISC [0-9 A-D] Discrepant flux flag, hex encoded
108 A1 --- HSD [0-8] High Source Density flag, hex encoded
110 I1 --- PNEARH [0-9] Nearby hours-confirmed sources
111 I1 --- PNEARW [0-5] Nearby weeks-confirmed sources
113 I1 --- CES12 *Nearby seconds confirmed extended sources
at 12um
114 I1 --- CES25 *Nearby seconds confirmed extended sources
at 25um
115 I1 --- CES60 *Nearby seconds confirmed extended sources
at 60um
116 I1 --- CES100 *Nearby seconds confirmed extended sources
at 100um
117-121 I5 --- SNR60 10 x signal/noise of weakest detection
at 60um
122-123 I2 --- NHCON Number of hours-confirmed source detections
124-125 I2 --- MHCON Potential number of hours-confirmed source
detections
127-130 I4 --- FCOR60 *1000*flux correction factor applied at 60um
132-136 A5 --- PLATE Plate number (POSS or SRC)
138-144 A7 --- NOM Nominal plate centre in RA,dec
146-148 I3 --- NUM Identifier for source on this plate
150-151 I2 h RAoh ? Optical right ascension B1950
152-153 I2 min RAom ? Optical right ascension B1950
154-158 F5.2 s RAos ? Optical right ascension B1950
160 A1 --- DEo- ? Optical declination sign B1950
161-162 I2 deg DEod ? Optical declination B1950
163-164 I2 arcmin DEom ? Optical declination B1950
165-168 F4.1 arcsec DEos ? Optical declination B1950
170-172 I3 arcsec ADX ? North/South Delta Optical/IRAS position
173-175 I3 arcsec ADY ? East/West Delta Optical/IRAS position
176-179 F4.1 --- ALK ? log_10 likelihood for optical
identification
180-182 I3 % REL ? Prob. correct optical identification
183 A1 --- CAND ? Optical candidate A,B etc
184 I1 --- IOPT *? Schmidt plate material used
185-190 F6.2 mag Bmag ? Estimated optical B magnitude
191-193 I3 arcsec MajAxiO ? Optical major axis
194-196 I3 arcsec MinAxiO ? Optical minor axis
197-199 I3 deg PAO ? Optical major axis position angle E of N
200-206 F7.3 mag/arcsec+2 SuBr ? Average optical surface brightness
207-208 I2 --- IDTYPE Cross-identification type from PSC
209-220 A12 --- Oname Optical name
221-226 F6.2 mag mag Zwicky/RC3 magnitude
227-231 F5.1 arcmin D1X *RC3/UGC/MCG/ESO D25 diameter from CATX
232-234 I3 % AR *Axial ratio d25/D25 from CATX
235-240 I6 km/s Hvel Best available heliocentric velocity (cz)
241-244 I4 km/s e_Hvel Error on heliocentric velocity
245-247 I3 --- r_Hvel *Reference for heliocentric velocity
248-253 I6 km/s Hvel2 Heliocentric velocity (cz)
measured as part of PSCz survey
254-257 I4 km/s e_Hvel2 Error on PSCz heliocentric velocity
258-260 I3 --- r_Hvel2 *Reference for PSCz heliocentric velocity
261-262 I2 --- TType De Vaucouleurs Type, 99 = unknown
264-271 A8 --- PGC Catalogue of Principal Galaxies
(PGC, Cat. <VII/119>) name
273-280 F8.4 deg RAdeg Right ascension B1950 (IRAS source)
282-289 F8.4 deg DEdeg Declination B1950 (IRAS source)
291-298 F8.4 deg GLON Galactic longitude
300-307 F8.4 deg GLAT Galactic latitude
308-313 I6 km/s cz Velocity cz in Local Group frame
314-318 F5.1 Mpc Dist Distance from Rowan-Robinson 1988
319-322 I4 --- IDclus Cluster identification from
Rowan-Robinson 1988
324-328 F5.2 [MJy/sr] ALI100 *log10(100um background in MJy/sr)
329-333 F5.2 [MJy/sr] ALI100B *log10(100um background in MJy/sr
for lune bin)
334-339 I6 --- NLBIN Lune bin number
341-342 A2 --- CLASS *Optical classification code
344-348 A5 --- CSEC PSCz sector, e.g. A/123
349-352 I4 mm Xpos X position from nominal bottom left corner
of Schmidt plate
353-356 I4 mm Ypos Y position from nominal bottom left corner
of Schmidt plate
358 A1 --- CSTAT [JORXPCELS?0] Optical material used
359 A1 --- CAREA h=high|b|, p=other PSCz,
l=BTP, c=in coverage gaps
360 A1 --- CZSTAT *[#-1234lpxq] Redshift status
362 A1 --- C12CLAS Classification in 1.2Jy survey
363-370 F8.2 Jy F3PSC PSC flux at 60um
371-378 F8.2 Jy F4PSC PSC flux at 100um
379-383 F5.2 mag ABB *Estimated average B extinction in lune bin
derived from 100 micron background
385 A1 --- CPSCZ *[^&=-+] Source category
386-387 I2 --- MHCONB * 2 or >=3 hours-confirmed coverages
for this lune bin
389 A1 --- CQDOT [q] q = in QDOT 1-in-6 sample
390-393 I4 km/s W20 *HI (21cm) 20% velocity width or flag
394-395 I2 km/s e_W20 Error on W20
396-399 I4 km/s W50 *HI (21cm) 50% velocity width or flag
400-401 I2 km/s e_W50 Error on W50
402-403 I2 --- r_W20 *HI reference
404-410 F7.3 Jy FP12 Addscan flux at 12um using point
source template
411-419 F9.3 Jy FP25 Addscan flux at 25um using point
source template
420-428 F9.3 Jy FP60 Addscan flux at 60um using point
source template
429-437 F9.3 Jy FP100 Addscan flux at 100um using point
source template
439-442 I4 mJy e_FP12 Statistical error in FP12
443-446 I4 mJy e_FP25 Statistical error in FP25
447-450 I4 mJy e_FP60 Statistical error in FP60
451-454 I4 mJy e_FP100 Statistical error in FP100
456 I1 --- BP12 Background fit subtracted or not at 12um
457 I1 --- BP25 Background fit subtracted or not at 25um
458 I1 --- BP60 Background fit subtracted or not at 60um
459 I1 --- BP100 Background fit subtracted or not at 100um
460-468 F9.3 Jy FE12 Coadded or extended addscan flux at 12um
469-477 F9.3 Jy FE25 Coadded or extended addscan flux at 25um
478-486 F9.3 Jy FE60 Coadded or extended addscan flux at 60um
487-495 F9.3 Jy FE100 Coadded or extended addscan flux at 100um
497-500 I4 mJy e_FE12 Statistical error in FE12
501-504 I4 mJy e_FE25 Statistical error in FE25
505-508 I4 mJy e_FE60 Statistical error in FE60
509-512 I4 mJy e_FE100 Statistical error in FE100
514 I1 --- BE12 *[0-2] Background fit at 12un
515 I1 --- BE25 *[0-2] Background fit at 25um
516 I1 --- BE60 *[0-2] Background fit at 60um
517 I1 --- BE100 *[0-2] Background fit at 100um
518-525 F8.4 arcmin+2 WIDTH2 Addscan width squared at 60um
526-533 F8.4 arcmin+2 e_WIDTH2 Error on WIDTH2
--------------------------------------------------------------------------------
Note on CPSCZ: source category:
= PSC (or PSC reject file) source, and not a large-diameter optical galaxy.
+ addscanned large optical galaxy added to PSCz.
- PSC source associated with a "+" addscan object (normally excluded).
& high latitude PSCz source, but in a bin excluded by psczmask.dat .
^ high latitude optical galaxy, in a bin excluded by psczmask.dat .
Note on CZSTAT: redshift status:
1 PSCz redshift, excellent quality
2 PSCz redshift, good quality
3 PSCz redshift, low s/n but secure
4 PSCz redshift, marginal detection, unreliable
l literature redshift, see r_Hvel for details.
p private communication, see r_Hvel for details.
q redshift from QDOT (J/MNRAS/308/897) or QCCOD
# redshift wanted for PSCz, but still unknown
x Give up, too optically faint (B or b_J > 19.5 mag)
- Don't need it: galactic source, duplicate, part of larger galaxy etc.
Note on CNAME: IRAS Names.
Digits hhmmm+ddmm as in PSC. The initial letter means:
Q: from QIGC (Cat. J/MNRAS/253/485)
P: from PSC (Cat. II/215)
R: from PSC reject file
O: from optical catalogue
Note on q_S12, q_S25, q_S60, q_S100:
1 = upper limit, 2 = moderate, 3 = OK, 4 = new HCON merged flux,
5 = addscanned flux/1.1, 6 = coadded flux,
7 = addscanned flux with point source template, 9 = single HCON.
Note on CES12, CES25, CES60, CES100:
1 = flagged as confirmed extended source,
2 = in SSS (Small Scale Structure) catalog (Cat. <VII/73>)
3 = in Large Galaxy Catalog,
4 = addscan flux,
5 = addscan flux, source is double,
6 = coadd flux,
7 = coadd flux, source is double,
8 = addscanned flux, Yahil software used,
9 = addscanned point source flux, Yahil software used.
2-8 data from QIGC, there should be none in here except class='ds' sources.
Note on Cirr1, Cirr2, Cirr3:
The cirrus flag measures the number of sources detected only at
100{mu}m in a 1-{deg}^2^ area around the source
Note on FCOR60: FCOR60 = NINT(FCOR(3) *1000)
FCOR = correction factors applied to correct for overestimated faint
fluxes as in Explanatory Supp. For the supplementary single-HCON
sources, we have applied a factor of 1.121, as used in the PSC for 2
out of possible 4 HCON detections. For merged single-HCON sources,
unmerged in PSC due to software errors, we have corrected the
correction factors accordingly.
Note on IOPT: Source of Schmidt plate material.
1 = POSS-O/APM, 2 = SRC-bJ/APM,
3,4,5 = SRC-bJ/Cosmos, 6 = SR/Cosmos,
7 = POSS-E/APM, 9 = RC3 diameters .
The optical information from plate scans is for the candidate with the
best likelihood, not necessarily that for which the redshift is taken.
The probability that these are the same depends strongly on latitude;
at high latitude they are very reliable.
The optical material is heterogeneous and except for IOPT=2 is
uncalibrated. IOPT=6 magnitudes are estimated red mags, otherwise B or
b_J. Due to saturation, magnitudes brighter than about 16 mag are very
unreliable. Where a correct bright galaxy has been misclassified by
the source-finding software as a star, the magnitude will be
meaningless.
Note on D1X, AR:
CATX is the all-sky optical galaxy compilation based on the CGCG, UGC,
MGC and the ESO catalogues
Note on r_Hvel, r_Hvel2: Velocity references
(negative reference numbers are PSCz or private communication)
-99 INT/FOS or AAT/FORS
-98 NOT
-97 CTIO 60"
-96 Fairall for PSCz
-95 Nancay measurements for PSCz
-94 AAT service data
-93 INT/IDS500
-92 Cananea
-91 Parkes
-90 WHT/FOSII
-32 Juraszek
-31 Visnanathan
-30 Kraan-Kortweg
-29 Lu, Pantoja
-28 Nancay
-27 Chamaraux, Yamada, Takata, Nakanishi
-25 WHT Ultraluminous
-24 QCCOD pole extension
-23 QCCOD
-21 Giovanelli + Haynes
-20 DaCosta
-10 - 70 as in Huchra 1991, See Cat. <VII/193>
83 QDOT, Lawrence et al., Cat. <J/MNRAS/308/897>
84 Leech et al., 1988MNRAS.231..977L
85 NED, see http://nedwww.ipac.caltech.edu/
86 PGC (Cat. <VII/119>), LEDA
87 1.2Jy, Cat. <VII/185>
88 Allen et al., 1990ApJ...355..130A
89 Seeberger
90 RC3 HI, Cat. <VII/155>
91 RC3 optical, Cat. <VII/155>
92 Fairall
97 Tully 1987ApJ...321..280T
98 Lonsdale and Hacking 1989ApJ...339..712L,
Lonsdale 1986 (see Eales et al., 1988ApJ...328..530E)
Note on ALI100, ALI100B, ABB:
100um backgrounds from Rowan-Robinson et al., 1991MNRAS.249..729R
ALI4 is the background in a 0.5 degree beam centered on the source,
corrected for that point source only.
ALI4B is the background averaged over lune bin, and is corrected for
all IGAL sources.
ABB is based on ALI4B, and has been crudely corrected for
temperature variation of dust across the galaxy.
Note on MHCONB:
MHCONB is the number of HCON coverages, crudely estimated from
Explanatory Supp Fig I.C.1, for comparing source counts, fluxes etc.
Note on W20, W50:
The HI data is extremely heterogeneous in quality, reduction and
linewidth definition.
-999 = private,
-997 = not reduced,
-996 = to be observed,
-995 = s/n < 5
-994 = detected OK but not measured,
-1 = non-detection,
-2 = confused,
Note on r_W20: HI references:
-5 Parkes (Cat. <VIII/15>)
-4 Nancay for PSCz
-3 Lu
-2 Bottinelli
-1 Giovanelli and Haynes
1 LEDA
2 Pantoja 1997, Cat. <J/AJ/113/905>
3 Seeberger 1994, Cat. <J/A+A/286/17>
Note on BE12, BE25, BE60, BE100:
0=no 1=yes 2=coadded flux
Note on CLASS: object classification from optical data etc.
g : galaxy or galaxies
gf: faint galaxy, B or b_j > 19.5 mag.
go: optical galaxy with 1D addscanned flux
gr: Rice et al galaxy with 2D coadded photometry
ss: Star, confirmed spectroscopically (by us, 1.2 Jansky or de Grijp)
bs: Bright star from plate or telescope TV, no spectrum
is: Star from IRAS colours and plate/TV appearance
c : Cirrus
pn: Planetary Nebula
rn: Reflection Nebula
h2: HII region
zz: Other galactic source
lm: in Large Magellanic Cloud
sm: in Small Magellanic Cloud
vb: Visually blank on sky survey plates, no non-stellar id
kb: K' image blank, no non-stellar id
rb: Radio blank, no 6 or 20cm id
de: delete from catalogue, part of extended galaxy
d1: delete from catalogue, broken up 1HCON source already listed elsewhere
du: deleted optical galaxy, part of multiple system unresolved by IRAS
dr: deleted optical galaxy, already in as Rice etal galaxy
ao: PSC source associated with addscanned optical galaxy
ar: PSC source associated with Rice etal optical galaxy
The divisions above between Galactic classifications 'pn','rn' etc are
not rigorous.
The CLASS='go' and 'gr' sources were optically selected (see
accompanying paper) and their IRAS fluxes determined by addscanning or
coadding. Their fluxes (F12 to F100) are addscan or coadded fluxes,
reduced by a factor 1.1 to bring them statistically into line with PSC
fluxes. Where the resulting flux F(3) is 0.6 Jy or greater, they are
added to the catalogue and flagged with CPSCZ='+'. There are 1467 such
sources representing 1402 individual galaxies resolved by IRAS. The
associated PSC source is retained in the catalogue, but is flagged as
CPSCZ='-' and will normally be excluded (1290 sources).
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Byte-by-byte Description of file: psczvs.dat psczcgvs.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- CPNAME PSCz name eg A/123/456
11 A1 --- CPSCZ Source category
12 A1 --- CZSTAT Redshift status
13- 14 A2 --- CLASS Optical classification code
16- 17 I2 h RAh Rigth ascension B1950
18- 19 I2 min RAm Rigth ascension B1950
20- 22 I3 0.1s RAds Rigth ascension B1950
24 A1 --- DE- Declination sign B1950
25- 26 I2 deg DEd Declination B1950
27- 28 I2 arcmin DEm Declination B1950
29- 30 I2 arcsec DEs Declination B1950
31- 36 F6.1 deg GLON Galactic longitude
37- 42 F6.1 deg GLAT Galactic latitude
43- 50 F8.2 Jy F60 Flux at 60um
51- 56 I6 km/s Vhel Best available heliocentric velocity (cz)
57- 60 I4 km/s e_Vhel Error on heliocentric velocity
61- 63 I3 --- r_Vhel Reference for heliocentric velocity
64- 75 A12 --- Oname Optical name
76- 79 I4 MJy/sr I100B 100 micron background for that lune bin
80- 84 F5.2 mag ABB Estimated average B extinction for that
lune bin
86 A1 --- CHSD High Source Density flag, hex encoded
88 A1 --- MHCONB 2 or >=3 hours-confirmed coverages for
this lune bin
89- 94 F6.2 --- F100/F60 Ratio of 100micron/60micron flux,
(negative means upper limit at 100um)
95-100 I6 --- NLBIN Lune bin
--------------------------------------------------------------------------------
General Notes:
Many fields are taken directly from Point Source Catalogue (II/125).
See IRAS Explanatory Supplement (Beichman et al., 1988NASAR1190....1B)
for more information.
If there are problems that cannot be resolved by careful reading of
these notes or the accompanying paper, please contact Will Saunders
(will@roe.ac.uk) or Will Sutherland (W.Sutherland1@physics.ox.ac.uk).
Acknowledgements: Will Saunders <will@roe.ac.uk>
================================================================================
(End) Will Saunders [ROE], Patricia Bauer [CDS] 19-May-2000