IRAS Extragalactic Catalog
11,444 objects in dataset
\My Documents\Software Bisque\TheSky6\SDB's
Next
"Add" the SDB to the
Active List of SDB's <--- Click here for more using the Data | Sky Database Manager's "Add"
button.
>SEARCH 1,10
>RAHOURS 12,13
>RAMINUTES 15,16
>RASECONDS 18,21
>DECSIGN 23,23
>DECDEGREES 24,25
>DECMINUTES 27,28
>DECSECONDS 30,31
>PARSE "Name" 1,10
>PARSE "Galactic Latitude" 33,35
>PARSE "Number of times observed" 47,49
>PARSE "Uncertnty ellpse major/minor" 38,42
>PARSE "Uncertnty ellpse psn - angle" 45,46
>PARSE "Nn clr corctd flx dnsty 12um" 51,55
>PARSE "Flux quality at 12um" 57,62
>PARSE "# of assocs. from SSS Catalog" 109,111
>IDENTIFIER IRAS2G
>LOADMEMORY
>OBJECT TYPE 55
;END
The internal name of the SDB is
IRAS2G the IDENTIFIER field. To search the SDB use Edit | Find IRAS2G followed
by the text you want to search. If you don't like the name chosen just compile
it with any other you want. Change the header too if you choose to do this.
Option 2 for searching the SDB
Edit | Find and Expand the
IRAS2G
entry under SDB's
HINT!
By checking both Frame Object and Object
Information as you scroll down the list each individual entry will be
conveniently centered and framed and the Object Information is displayed.
If you want to display a field
from the data other than the fields I have defined just change the
header and recompile the SDB for the
change to take affect.
Example.
If you wanted to change the field assigned to
Non-color corrected flux density at 12um abbreviated "Nn clr corctd flx
dnsty 12um" change the header and columns accordingly. Change the PARSE name and
then the columns that contain the data.
>PARSE "Flux quality at 100um" 79,83
Once the header has been altered simply use Data |
Import and recompile by pressing the Compile button.
As per the header below the data
needs to be compiled using EPOCH 1950.
Data | Import Dialog
Must use Epoch 1950!
WARNING!
If you use the default EPOCH 2000 there will be a slight error in position.
Actually an error of 41 arcminutes when compiling the data using EPOCH 2000
instead of 1950!
In spot checking the positions
they are not extremely accurate in the text they are not extremely accurate.
Positional errors of several arcseconds can be expected!
Note the example below. Galaxy NGC 7810 is
centered and the entry for IRAS2G: 23597+1241 is also shown. There is ~3.5
arcseconds of discrepancy.
IRAS2G versus NGC
Positional discrepancy shown
The text does not contain any
magnitude therefore no magnitudes are reported.
Original HEADER - Fields
defined
Following is the HEADER file
included with the data. The Header defines the fields in the text.
NOTE!
Because the Object Information dialog
can only display 8 fields of information the dataset is somewhat problematic.
Also note that you cannot exceed 28 characters in a field name. If you
do so the line is ignored! You will not be able to use all the fields of
information, even after doubling up and will need to truncate the field names or
use abbreviations!
Object Information dialog
Limited to only 8 fields
Depending on which fields of information you are
interested in as found in the original text you may want to change the existing
header accordingly. This is quite
simple to do <---Click here. XTENSION= 'TABLE ' / Table extension
BITPIX = 8 / Character data
NAXIS = 2 / Simple 2-D matrix
NAXIS1 = 160 / Number of characters per record
NAXIS2 = 11444 / Number of records in the file
PCOUNT = 0 / No "random" parameters
GCOUNT = 1 / Only one group
TFIELDS = 50 / Number of data fields per record
EXTNAME = 'XCAT_Data' / IRAS Extragalactic Catalog - main data file
AUTHOR = 'IPAC '
REFERENC= 'Version 2.1'
DATE = '05/06/89' / Date FITS table verified (dd/mm/yy)
COMMENT This FITS header is NOT a complete scientific document for the subject
COMMENT catalog. It serves only as a minimal description of the general
COMMENT format and structure of the data file.
COMMENT A copy of "Cataloged Galaxies and Quasars Observed in the IRAS
COMMENT Survey, Version 2" should be used to answer questions about the
COMMENT data in the Extragalactic Catalog (XCAT).
COMMENT Names which refer to each of the four IRAS bands of 12, 25, 60 and
COMMENT 100 microns are suffixed with the numerals 12, 25, 60 and 100.
COMMENT For example Relunc_12 is the relative flux density uncertainty
COMMENT at 12 microns.
TTYPE1 = 'Name ' / Source name
TBCOL1 = 1 / Start column
TFORM1 = 'A11 ' / Fortran format
TTYPE2 = 'RAH ' / Hours RA, equinox 1950.0, epoch 1983.5
TBCOL2 = 12 / Start column
TFORM2 = 'I2 ' / Fortran format
TUNIT2 = 'h ' / Units are hours
TTYPE3 = 'RAM ' / Minutes RA, equinox 1950.0, epoch 1983.5
TBCOL3 = 15 / Start column
TFORM3 = 'I2 ' / Fortran format
TUNIT3 = 'min ' / Units are minutes of time
TTYPE4 = 'RAS ' / Seconds RA, equinox 1950.0, epoch 1983.5
TBCOL4 = 18 / Start column
TFORM4 = 'F4.1 ' / Fortran format
TUNIT4 = 's ' / Units are seconds of time
TTYPE5 = 'DecSign ' / Sign of DEC, equinox 1950.0, epoch 1983.5
TBCOL5 = 23 / Start column
TFORM5 = 'A1 ' / Fortran format
TTYPE6 = 'DecD ' / Degrees Dec, equinox 1950.0, epoch 1983.5
TBCOL6 = 24 / Start column
TFORM6 = 'I2 ' / Fortran format
TUNIT6 = 'deg ' / Units are degrees
TTYPE7 = 'DecM ' / Minutes Dec, equinox 1950.0, epoch 1983.5
TBCOL7 = 27 / Start column
TFORM7 = 'I2 ' / Fortran format
TUNIT7 = 'arcmin ' / Units are minutes of arc
TTYPE8 = 'DecS ' / Seconds Dec, equinox 1950.0, epoch 1983.5
TBCOL8 = 30 / Start column
TFORM8 = 'I2 ' / Fortran format
TUNIT8 = 'arcsec ' / Units are seconds of arc
TTYPE9 = 'GLat ' / Galactic latitude, equinox 1950.0
TBCOL9 = 33 / Start column
TFORM9 = 'I3 ' / Fortran format
TUNIT9 = 'deg ' / Units are degrees
TTYPE10 = 'UncMajor' / Uncertainty ellipse semi-major axis
TBCOL10 = 37 / Start column
TFORM10 = 'I3 ' / Fortran format
TUNIT10 = 'arcsec ' / Units are seconds of arc
TTYPE11 = 'UncMinor' / Uncertainty ellipse semi-minor axis
TBCOL11 = 40 / Start column
TFORM11 = 'I3 ' / Fortran format
TUNIT11 = 'arcsec ' / Units are seconds of arc
TTYPE12 = 'PosAng ' / Uncertainty ellipse position angle
TBCOL12 = 44 / Start column
TFORM12 = 'I3 ' / Fortran format
TUNIT12 = 'deg ' / Units are degrees
COMMENT PosAng: measured in degrees East of North between the major axis of the
COMMENT PosAng: ellipse and the local equatorial meridian.
TTYPE13 = 'NHcon ' / Number of times observed
TBCOL13 = 47 / Start column
TFORM13 = 'I2 ' / Fortran format
TTYPE14 = 'Fnu_12 ' / Non-color corrected flux density at 12um
TBCOL14 = 49 / Start column
TFORM14 = 'F6.2 ' / Fortran format
TUNIT14 = 'Jy ' / Units are Janskys
TTYPE15 = 'FQual_12' / Flux quality at 12um
TBCOL15 = 55 / Start column
TFORM15 = 'A1 ' / Fortran format
COMMENT FQual: Flux quality codes are (blank) = high quality; ':' = moderate
COMMENT FQual: quality; 'L' = upper limit
TTYPE16 = 'Fnu_25 ' / Non-color corrected flux density at 25um
TBCOL16 = 56 / Start column
TFORM16 = 'F6.2 ' / Fortran format
TUNIT16 = 'Jy ' / Units are Janskys
TTYPE17 = 'FQual_25' / Flux quality at 25um
TBCOL17 = 62 / Start column
TFORM17 = 'A1 ' / Fortran format
TTYPE18 = 'Fnu_60 ' / Non-color corrected flux density at 60um
TBCOL18 = 63 / Start column
TFORM18 = 'F7.2 ' / Fortran format
TUNIT18 = 'Jy ' / Units are Janskys
TTYPE19 = 'FQual_60' / Flux quality at 60um
TBCOL19 = 70 / Start column
TFORM19 = 'A1 ' / Fortran format
TTYPE20 = 'Fnu_100 ' / Non-color corrected flux density at 100um
TBCOL20 = 71 / Start column
TFORM20 = 'F7.2 ' / Fortran format
TUNIT20 = 'Jy ' / Units are Janskys
TTYPE21 = 'FQual_100' / Flux quality at 100um
TBCOL21 = 78 / Start column
TFORM21 = 'A1 ' / Fortran format
TTYPE22 = 'FIR ' / Log(FIR) far infrared flux
TBCOL22 = 79 / Start column
TFORM22 = 'F6.2 ' / Fortran format
TUNIT22 = 'W/m**2 ' / Units are Watts per square meter
COMMENT FIR: The far infrared flux, log(FIR), is a combination of 60 and 100
COMMENT FIR: micron fluxes. See Appendix B, printed edition.
TTYPE23 = 'FQFIR ' / FIR flux quality (see comment for FQual)
TBCOL23 = 85 / Start column
TFORM23 = 'A1 ' / Fortran format
TTYPE24 = 'Relunc_12' / Percent rel. flux density uncertainty at 12um
TBCOL24 = 86 / Start column
TFORM24 = 'A1 ' / Fortran format
COMMENT Relunc: Uncertainties are coded as follows:
COMMENT Relunc: A - from 0 to less than 4%
COMMENT Relunc: B - from 4 to less than 8
COMMENT Relunc: C - from 8 to less than 12
COMMENT Relunc: D - from 12 to less than 16
COMMENT Relunc: E - from 16 to less than 20
COMMENT Relunc: F - equal to or greater than 20%
TTYPE25 = 'Relunc_25' / Percent rel. flux density uncertainty at 25um
TBCOL25 = 87 / Start column
TFORM25 = 'A1 ' / Fortran format
TTYPE26 = 'Relunc_60' / Percent rel. flux density uncertainty at 60um
TBCOL26 = 88 / Start column
TFORM26 = 'A1 ' / Fortran format
TTYPE27 = 'Relunc_100' / Percent rel. flux density uncertainty at 100um
TBCOL27 = 89 / Start column
TFORM27 = 'A1 ' / Fortran format
TTYPE28 = 'CC_12 ' / Point source correlation coefficient, 12um
TBCOL28 = 91 / Start column
TFORM28 = 'A1 ' / Fortran format
COMMENT CC: Correlation Coefficient codes are:
COMMENT CC: A - 100%, B - 99%, C - 98%, ..., M - 87%
TTYPE29 = 'CC_25 ' / Point source correlation coefficient, 25um
TBCOL29 = 92 / Start column
TFORM29 = 'A1 ' / Fortran format
TTYPE30 = 'CC_60 ' / Point source correlation coefficient, 25um
TBCOL30 = 93 / Start column
TFORM30 = 'A1 ' / Fortran format
TTYPE31 = 'CC_100 ' / Point source correlation coefficient, 100um
TBCOL31 = 94 / Start column
TFORM31 = 'A1 ' / Fortran format
TTYPE32 = 'Cirr1 ' / Number of nearby 100 micron only sources
TBCOL32 = 96 / Start column
TFORM32 = 'I1 ' / Fortran format
TTYPE33 = 'Cirr2 ' / Ratio of cirrus flux to source flux
TBCOL33 = 97 / Start column
TFORM33 = 'I1 ' / Fortran format
TTYPE34 = 'Confuse ' / Confusion flag, hex encoded
TBCOL34 = 99 / Start column
TFORM34 = 'A1 ' / Fortran format
COMMENT Confuse: See Table IV.A.1., printed edition.
TTYPE35 = 'PNearH ' / Number hours-confirmed point sources nearby
TBCOL35 = 100 / Start column
TFORM35 = 'I1 ' / Fortran format
COMMENT PnearH: If it exceeds 9, it is set equal to 9.
TTYPE36 = 'PNearW ' / Number weeks-confirmed point sources nearby
TBCOL36 = 101 / Start column
TFORM36 = 'I1 ' / Fortran format
COMMENT PNearW: If it exceeds 9, it is set equal to 9.
TTYPE37 = 'HSDFlag ' / High source density bin flag, hex encoded
TBCOL37 = 102 / Start column
TFORM37 = 'A1 ' / Fortran format
COMMENT HSDFlag: See Table IV.A.1., printed edition.
TTYPE38 = 'SES1_12 ' / Number of seconds-confirmed 12um SES nearby
TBCOL38 = 104 / Start column
TFORM38 = 'I1 ' / Fortran format
COMMENT SES: SES is used as an acronym for small extended sources.
TTYPE39 = 'SES1_25 ' / Number of seconds-confirmed 25um SES nearby
TBCOL39 = 105 / Start column
TFORM39 = 'I1 ' / Fortran format
TTYPE40 = 'SES1_60 ' / Number of seconds-confirmed 60um SES nearby
TBCOL40 = 106 / Start column
TFORM40 = 'I1 ' / Fortran format
TTYPE41 = 'SES1_100' / Number of seconds-confirmed 100um SES nearby
TBCOL41 = 107 / Start column
TFORM41 = 'I1 ' / Fortran format
TTYPE42 = 'SES2 ' / Number of weeks-confirmed SES nearby
TBCOL42 = 108 / Start column
TFORM42 = 'A1 ' / Fortran format
COMMENT SES2: Values are hex encoded, see Table IV.A.1., printed edition.
TTYPE43 = 'NSSS ' / Number of associations from SSS Catalog
TBCOL43 = 109 / Start column
TFORM43 = 'I2 ' / Fortran format
TTYPE44 = 'SSSName ' / Name of closest SSS association
TBCOL44 = 112 / Start column
TFORM44 = 'A10 ' / Fortran format
TTYPE45 = 'DisSSS ' / Separation from the SSS source
TBCOL45 = 122 / Start column
TFORM45 = 'I3 ' / Fortran format
TUNIT45 = 'arcmin ' / Units are minutes of arc
TTYPE46 = 'NonGal ' / Number associations from non-galaxy catalogs
TBCOL46 = 125 / Start column
TFORM46 = 'I2 ' / Fortran format
COMMENTS NonGal: Non-galaxy catalogs are listed in Table S.V.H.1., printed ed.
TTYPE47 = 'IdnGal ' / Closest non-galaxy catalog association
TBCOL47 = 128 / Start column
TFORM47 = 'A1 ' / Fortran format
COMMENT IdnGal: Codes for non-galaxy id's are in Table IV.A.2., printed edition.
TTYPE48 = 'DSNGal ' / Separation of the non-galaxy source
TBCOL48 = 130 / Start column
TFORM48 = 'I3 ' / Fortran format
TUNIT48 = 'arcmin ' / Units are minutes of arc
TTYPE49 = 'NRecs ' / Number of lines in XCAT_Assoc with IRAS name
TBCOL49 = 133 / Start column
TFORM49 = 'I2 ' / Fortran format
TTYPE50 = 'Blanks ' / Blank space for possible added data
TBCOL50 = 135 / Start column
TFORM50 = 'A26 ' / Fortran format
END
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