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J/AJ/102/1663    Radio properties of extragal. IRAS sources    (Condon+, 1991)

Radio properties of extragalactic IRAS sources Condon J.J., and Broderick J.J. <Astron. J. 102, 1663 (1991)> =1991AJ....102.1663C (SIMBAD/NED BibCode)
ADC_Keywords: Radio sources ; Infrared sources ; Galaxies, IR ; Galaxies, radio Description: This catalog presents radio and optical identifications of extragalactic IRAS sources from the IRAS Faint Source Catalog |b| > 50° (Moshir et al., 1989 Cat. II/156). Sources with flux density > 0.2 at 60 microns and with S60 > S12 were identified by position coincidence with radio sources stronger than 25 mJy and lying north of declination = 5° on the Green Bank 4.85 GHz sky map. Published VLA maps, new 4.86 GHz VLA maps made with 15 arcsec resolution, and accurate optical positions were used to confirm 122 candidate identifications. This catalog contains a merged version of tables 1 and 2 from the paper. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file rad_iras.dat 165 122 Radio Properties of Extragalactic IRAS Sources (5.5°.. Dec ..66°)
See also: II/156 : IRAS Faint Source Catalog, |b| > 10, Version 2.0 (Moshir+ 1989) Byte-by-byte Description of file: rad_iras.dat
Bytes Format Units Label Explanations
1- 11 A11 --- IRAS Name of source (IRAS Faint Source Catalog) (1) 13- 14 I2 h RAh Right Ascension (B1950) (hour) 15- 16 I2 min RAm Right Ascension (B1950) (min) 17- 20 F4.1 s RAs Right Ascension (B1950) (sec) 21 A1 --- DE- Declination sign (B1950) 22- 23 I2 deg DEd Declination (B1950) (deg) 24- 25 I2 arcmin DEm Declination (B1950) (arcmin) 26- 27 I2 arcsec DEs Declination (B1950) (arcsec) 28 A1 --- l_S12 [ <] '<' if flux density is an upper limit 29- 34 F6.3 Jy S12 12 micron flux density (2) 35 A1 --- l_S25 [ <] '<' if flux density is an upper limit 36- 41 F6.3 Jy S25 25 micron flux density (2) 43- 49 F7.3 Jy S60 60 micron flux density (2) 50 A1 --- l_S100 [ <] '<' if flux density is an upper limit 51- 57 F7.3 Jy S100 100 micron flux density (2) 59- 60 I2 h RArh ? Radio Right Ascension (B1950) (hour) (3) 61- 62 I2 min RArm ? Radio Right Ascension (B1950) (min) 63- 67 F5.2 s RArs ? Radio Right Ascension (B1950) (sec) 68 A1 --- DEr- Radio Declination sign (B1950) (3) 69- 70 I2 deg DErd ? Radio Declination (B1950) (deg) 71- 72 I2 arcmin DErm ? Radio Declination (B1950) (arcmin) 73- 76 F4.1 arcsec DErs ? Radio Declination (B1950) (arcsec) 78- 82 I5 mJy S4850 Flux density at 4850 MHz (4) 84- 88 A5 --- refs References to published VLA maps (5) 90-100 A11 --- Oname Alternative name of source (1) 102-103 I2 h RAoh ? Optical Right Ascension (B1950) (hour) (6) 104-105 I2 min RAom ? Optical Right Ascension (B1950) (min) 106-110 F5.2 s RAos ? Optical Right Ascension (B1950) (sec) 111 A1 --- DEo- Optical Declination sign (B1950) (6) 112-113 I2 deg DEod ? Optical Declination (B1950) (deg) 114-115 I2 arcmin DEom ? Optical Declination (B1950) (arcmin) 116-119 F4.1 arcsec DEos ? Optical Declination (B1950) (arcsec) 120 A1 --- opt_flg [ *] '*' if higher accuracy in position (6) 121-128 A8 --- type Optical type for UGC galaxies (7) 132-135 F4.1 --- Pmag ? Apparent photographic magnitude (7) 137-142 F6.1 Mpc dist ? Optical distance (7) 144-148 F5.2 --- q FIR/radio flux-ratio parameter (7) 150-154 F5.2 --- Sp-Index ? Radio spectral index between 1.4 and 5 GHz (8) 155 A1 --- l_alphaIR [ >] '>' if alphaIR is a lower limit (8) 156-160 F5.2 --- alphaIR Spectral index between 60 and 25 microns (8) 162-164 A3 --- source Dominant radio energy source (9) 165 A1 --- notes [ *] '*' if there is a note on the src. (10)
Note (1): The "IRAS" column gives the IRAS Faint Source Catalog name in the format FHHMM.M+DDMM, where the letter F signifies that it is from the FSC, and the last digit of the RA field being the integer part of the RA seconds (i.e. the IAU-style truncation). The 'Oname' columns gives an alternative name for the source, if any, taken from such catalogs as NGC, 3C, IC, and UGC. Note (2): These columns give flux density information at 12, 25, 60, and 100 microns. Flags preceding the flux densities indicate which flux densities are upper limits (indicated by a greater-than symbol in this column). Flux densities (in Jy) are taken from (in order or preference): IRAS Catalog of Large Optical Galaxies (Rice et al., 1988ApJS...68...91R Cat. VII/109), revised IRAS Bright Catalog Sample (Soifer et al., 1989AJ.....98..766S) IRAS Small Scale Structures Catalog (Helou and Walker, 1988)(Cat. VII/73) IRAS Faint Source Catalog, ver. 1 (Moshir et al., 1989) (Cat. II/156) Note (3): These columns give the B1950 radio position. All of these positions were measured with the VLA at 1.49 or 4.86 GHz, and their rms uncertainties are normally < 1 arcsec in each coordinate. Sources which are flagged with an asterisk in the rad_flg column are precise to 0.01s in RA and 0.1" in Dec. Sources which are not flagged are precise to 0.1s in RA and 1" in Dec. Note (4): This column gives the Green Bank 4.85 GHz flux density (in mJy) from the 87GB Catalog (Gregory and Condon 1991ApJS...75.1011G, Cat.VIII/14) or the flux density as measured from the sky maps. Note (5): This column gives references to published VLA maps. Some of these papers contain additional references to published radio data: 1 Condon (1987ApJS...65..485C) or Condon et al. (1987ApJS...65..543C) 2 Condon et al. (1990ApJS...73..359C) 3 Condon et al. (1991AJ....101..362C) Note (6): These columns give the B1950 optical position Sources which are flagged with an asterisk in the 'opt_flg' column were measured with 0.5" rms accuracy (Condon et al., 1991AJ....101..362C or new measurements) and are precise to 0.01s in RA and 0.1" in Dec. Sources which are not flagged in the 'opt_flg' column were measured with 4" rms accuracy (Dressel and Condon 1976ApJS...31..187D; Condon and Broderick (1988AJ.....96...30C) Condon et al., 1991AJ....101..362C) and are precise to 0.1s in RA and 1" in Dec. Note (7): These columns give optical information on the identifications. The optical morphological type (type) is taken from Nilson (1973) for UGC galaxies. The apparent photographic magnitude (Pmag) has been corrected for Zwicky magnitude errors (Kron and Shane 1976) in the area between 7h and 18h, south of 15 ° (see Giovanelli and Haynes 1984). The distance (dist) is given in Mpc from the Revised Shaply-Ames Catalog (Sandage and Tammann 1981, Cat VII/51) or from Hubble distance based on Ho = 50 km/s/Mpc. The q column gives the FIR/radio flux-ratio parameter, defined by q = log( [ FIR / (3.75x1012 Hz) ] / S4.85 ) where S_4.85 is the 4.85 GHz flux density (W m-2 Hz-1) and FIR ≡ 1.26x1014( 2.58*S60 + S100) is the total far-infrared flux (W m-2) between 42.5 and 122.5 microns obtained from the IRAS 60 micron and 100 micron flux densities (Jy) (Helou et al., 1985. (Cat. VII/73)) Note (8): The alpha column gives the radio spectral index defined by alpha = -log(S1/S2)/log(nu1/nu2) where nu1 ∼5 GHz and nu2 ∼1.4 GHz. The values of S1 were taken from the S4850 column or from Condon et al., (1991AJ....101..362C). The values of S2 are based on the VLA maps in Condon (1987ApJS...65..485C), Condon and Broderick (1988AJ.....96...30C), Condon et al. (1990ApJS...73..359C) or Condon et al (1991AJ....101..362C) unless otherwise noted in the paper. The alphaIR column gives the FIR spectral index defined by alphaIR = log(S60/S25)/log(60/25) l_alphaIR is flagged with '>' if alphaIR is a lower limit. Note (9): This column gives the dominant radio energy source: stars (S) or monster (M). Note (10): This column is marked with an asterisk if there is a note on the source in the published paper. These notes are typically notes on UGC galaxies or the AGN spectral type classifications, and are taken from the compilation of Veron-Cetty and Veron (1989).
History: "The catalogue was originally archived as A053 by H. Andernach () and the ADS documentation prepared in collaboration with Carolyn Stern Grant ()." Acknowledgements: Acknowledgements: References: Giovanelli and Haynes 1984, A.J., 89, 1. Helou et al., 1985, Ap.J.Lett., 298, L11. Helou and Walker, 1988, IRAS Catalogs and Atlases: Small Scale Structure Catalog (U.S. GPO, Washington, DC). (Cat. VII/73) Kron and Shane 1976, Ap&SS, 39, 401. Moshir et al., 1989, Explanatory Supplement to the IRAS Faint Source Survey (Jet Propulsion Laboratory, Pasadena). (Cat. II/156) Nilson 1973, Uppsala General Catalogue of Galaxies (Uppsala Astronomical Observatory, Uppsala). (Cat. VII/26) Sandage and Tammann 1981, A Revised Shapley-Ames Catalog of Bright Galaxies (Carnegie Institute of Washington, Washington, DC) (RSA). (Cat.VII/51) Veron-Cetty and Veron 1989, A Catalogue of Quasars and Active Nuclei, 4th edition (European Southern Observatory, Garching.
(End) Patricio Ortiz [CDS] 29-Mar-1999
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