II/274 IRAS Point Source Reject Catalog (IRAS 1989)
IRAS Point Source Reject Catalog, Version 2.1 (1989) <Infrared Astronomical Satellite (IRAS) Catalogs and Atlases vol. 1, Explanatory Supplement, 1988, ed. C. Beichman, et al., NASA RP-1190>
ADC_Keywords: Photometry, infrared ; Infrared sources ; Surveys Mission_Name: IRAS Description: This is a catalog of 372,774 potential infrared point sources that failed one or more of the confirmation and confusion criteria and were not, thus, included in the IRAS Point Source Catalog (Cat. II/125). These REJECTED sources include spurious objects (e.g., processing failures, space debris, asteroids and comets) and celestial sources that, due to incompleteness at faint levels or to variability, failed to achieve the minimum criterion of two hours-confirmed sightings. In regions of high source density the catalog includes sources rejected by the more severe criteria for reliability applied there. For detailed description about the IRAS mission and catalogues, see also http://lambda.gsfc.nasa.gov/product/iras/docs/exp.sup/toc.html File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file iras_r.dat 141 372774 IRAS Point Source Reject Catalog, Version 2.1 assoc_r.dat 58 89632 Optical associations meaning.txt 80 235 Association catalogues (from PSC, Cat. II/125)
See also: http://lambda.gsfc.nasa.gov/product/iras/i_products.cfm : IRAS products at the Legacy Archive for Microwave Background Data Analysis II/125 : IRAS Point Source Catalog (IRAS-PSC) II/156 : IRAS Faint Source Survey (IRAS-FSS, sources FHHMMm+DDMM) II/126 : IRAS Serendipitous Survey Catalog (IRAS-SSC, sources SHHMMm+DDMMA) VII/73 : IRAS Small Scale Structure Catalog (IRAS-SSSC, sources XHHMM+DDd) II/275 : IRAS Faint Source Reject Catalog (IRAS-FSR, sources ZHHMMm+DDMM) III/197 : IRAS Low Resolution Spectra (IRAS-LRS) VII/91 : IRAS Asteroid and Comet Survey II/190 : IRAS Minor Planet Survey data base III/170 : IRAS Point Source Identifications (MacConnell, 1993) Byte-by-byte Description of file: iras_r.dat
Bytes Format Units Label Explanations
1- 11 A11 --- IRAS IRAS source name (RHHMMm+DDMM) 12- 13 I2 h RAh Hours RA, equinox 1950.0, epoch 1983.5 14- 15 I2 min RAm Minutes RA, equinox 1950.0, epoch 1983.5 16- 18 I3 ds RAds Seconds RA, equinox 1950.0, epoch 1983.5 19 A1 --- DE- Sign Dec, equinox 1950.0, epoch 1983.5 20- 21 I2 deg DEd Degrees Dec, equinox 1950.0, epoch 1983.5 22- 23 I2 arcmin DEm Minutes Dec, equinox 1950.0, epoch 1983.5 24- 25 I2 arcsec DEs Seconds Dec, equinox 1950.0, epoch 1983.5 26- 28 I3 arcsec Major Uncertainty ellipse major axis 29- 31 I3 arcsec Minor Uncertainty ellipse minor axis 32- 34 I3 deg PosAng Uncertainty ellipse position angle (1) 35- 36 I2 --- NHcon Number of times observed 37- 45 E9.4 Jy F12um Non-color corrected flux density, 12um (5) 46- 54 E9.4 Jy F25um Non-color corrected flux density, 25um (5) 55- 63 E9.4 Jy F60um Non-color corrected flux density, 60um (5) 64- 72 E9.4 Jy F100um Non-color corrected flux density, 100um (5) 73 I1 --- q_F12um [1,3] Flux density quality, 12um (3) 74 I1 --- q_F25um [1,3] Flux density quality, 25um (3) 75 I1 --- q_F60um [1,3] Flux density quality, 60um (3) 76 I1 --- q_F100um [1,3] Flux density quality, 100um (3) 77- 78 I2 --- NLRS Number of significant LRS spectra (4) 79- 80 A2 --- LRS Characterization of averaged LRS spectrum (4) 81- 83 I3 % e_F12um Percent relative flux uncertainty, 12um 84- 86 I3 % e_F25um Percent relative flux uncertainty, 25um 87- 89 I3 % e_F60um Percent relative flux uncertainty, 60um 90- 92 I3 % e_F100um Percent relative flux uncertainty, 100um 93- 97 I5 0.1 TSNR12 10x minimum signal-to-noise ratio, 12um 98-102 I5 0.1 TSNR25 10x minimum signal-to-noise ratio, 25um 103-107 I5 0.1 TSNR60 10x minimum signal-to-noise ratio, 60um 108-112 I5 0.1 TSNR100 10x minimum signal-to-noise ratio, 100um 113 A1 --- CC12 [A-N] Point source correlation coeff., 12um (8) 114 A1 --- CC25 [A-N] Point source correlation coeff., 25um (8) 115 A1 --- CC60 [A-N] Point source correlation coeff., 60um (8) 116 A1 --- CC100 [A-N] Point source correlation coeff. 100um (8) 117-118 I2 % Var ?=-1 Percent likelihood of variability (-1 if not examined) 119 A1 --- Discr Discrepant fluxes flag, hex encoded (6) 120 A1 --- Confuse Confusion flags, 1 per band, hex encoded (6) 121 I1 --- PNearH Number of nearby hours-confirmed point sources 122 I1 --- PNearW Number of nearby weeks-confirmed point sources 123 I1 --- SES1_12 Nearby seconds-confirmed small ext., 12um (7) 124 I1 --- SES1_25 Nearby seconds-confirmed small ext., 25um (7) 125 I1 --- SES1_60 Nearby seconds-confirmed small ext., 60um (7) 126 I1 --- SES1_100 Nearby seconds-confirmed small ext., 100um (7) 127 I1 --- SES2_12 Nearby weeks-confirmed small ext., 12um (7) 128 I1 --- SES2_25 Nearby weeks-confirmed small ext., 25um (7) 129 I1 --- SES2_60 Nearby weeks-confirmed small ext., 60um (7) 130 I1 --- SES2_100 Nearby weeks-confirmed small ext., 100um (7) 131 A1 --- HSDFlag High source density bin flag, hex encoded (6) 132 I1 --- Cirr1 Number of nearby 100 micron only WSDB sources (Working Survey Data-base) 133 I1 --- Cirr2 100um sky brightness ratio to flux density (2) 134-136 I3 MJy/sr Cirr3 ?=-1 Total 100 micron sky surface brightness 137-138 I2 --- NID Number of positional associations (assoc_r.dat) 139 I1 --- IDType [0,4] Type of object association (9) 140-141 I2 --- MHcon ? Possible number of HCONs (Hours Confirming)
Note (1): Measured in degrees east of north between the major axis of the ellipse and the local equatorial meridian. Note (2): The spatially filtered 100 micron sky brightness to flux density ratio of point source (see Explanatory Supplement) Note (3): 3=high quality, 2=moderate quality, 1=upper limit Note (4): Low Resolution Spectra, see Cat. III/197 Note (5): The flux densities listed in the catalog are average values computed for the effective wavelengths of the IRAS bands and an assumed input energy distribution F(ν)∝1/ν (i.e. a spectral index of -1). See details in the Explanatory Supplement or at the IRAS archive site at http://lambda.gsfc.nasa.gov/product/iras/colorcorr.cfm Note (6): The hexadecimal encoding is the representation of a 4-bit number with values set to 1=12um, 2=25um, 4=60um, 8=100um. For instance, the value A=10=8+2 has flags set for 25 and 100um. Note (7): Values of SES1 greater than 1 should caution the user that significant extended structure may exist in the region and that the source in question may be a point-source like piece of a complex field. SES2 values greater than 0 means that the point source flux measurement should be treated with caution as the source in question may, in fact, be extended; the flux quoted in the catalog of small extended sources (Cat. VII/73) may provide a better value for the source. Note (8): from section V.C.4 of the Explanation: the point source correlation coefficient can have values in the range 87-100%, coded as alphabetic characters with A=100, B=99 .. N=87 Note (9): association with the following type of catalog: 1 = extragalactic catalog 2 = stellar catalog 3 = other catalogs 4 = matches in multiple types of catalogs 0 = no association
Byte-by-byte Description of file: assoc_r.dat
Bytes Format Units Label Explanations
1- 11 A11 --- IRAS IRAS source name 12- 17 I6 --- PSRno [1,372774] Main data table record number 19- 20 I2 --- CatNum Catalog number (1) 21- 35 A15 --- Source Source identification 36- 40 A5 --- Type Source type or spectral class 41- 43 I3 arcsec Radius Radius vector from IRAS source to association 44- 46 I3 deg Pos Position angle (E of N), IRAS source to object 47- 50 I4 --- Field1 Object data field 1, catalog dependent 51- 54 I4 --- Field2 Object data field 2, catalog dependent 55- 58 I4 --- Field3 Object data field 3, catalog dependent
Note (1): See Table X.B.4 in the "IRAS Catalogs and Atlases Explanatory Supplement" also included in the "meaning.txt" file.
History: From http://lambda.gsfc.nasa.gov/ , files reformatted at CDS.
(End) Francois Ochsenbein [CDS] 20-Jan-2007
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