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J/ApJ/836/174  Extragalactic peaked-spectrum radio sources  (Callingham+, 2017)

Extragalactic peaked-spectrum radio sources at low frequencies. Callingham J.R., Ekers R.D., Gaensler B.M., Line J.L.B., Hurley-Walker N., Sadler E.M., Tingay S.J., Hancock P.J., Bell M.E., Dwarakanath K.S., For B.-Q., Franzen T.M.O., Hindson L., Johnston-Hollitt M., Kapinska A.D., Lenc E., McKinley B., Morgan J., Offringa A.R., Procopio P., Staveley-Smith L., Wayth R.B., Wu C., Zheng Q. <Astrophys. J., 836, 174-174 (2017)> =2017ApJ...836..174C (SIMBAD/NED BibCode)
ADC_Keywords: Radio sources ; Radio continuum ; Cross identifications ; Redshifts Keywords: galaxies: active; radiation mechanisms: general; radio continuum: general Abstract: We present a sample of 1483 sources that display spectral peaks between 72MHz and 1.4GHz, selected from the GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey. The GLEAM survey is the widest fractional bandwidth all-sky survey to date, ideal for identifying peaked-spectrum sources at low radio frequencies. Our peaked-spectrum sources are the low-frequency analogs of gigahertz-peaked spectrum (GPS) and compact-steep spectrum (CSS) sources, which have been hypothesized to be the precursors to massive radio galaxies. Our sample more than doubles the number of known peaked-spectrum candidates, and 95% of our sample have a newly characterized spectral peak. We highlight that some GPS sources peaking above 5GHz have had multiple epochs of nuclear activity, and we demonstrate the possibility of identifying high-redshift (z>2) galaxies via steep optically thin spectral indices and low observed peak frequencies. The distribution of the optically thick spectral indices of our sample is consistent with past GPS/CSS samples but with a large dispersion, suggesting that the spectral peak is a product of an inhomogeneous environment that is individualistic. We find no dependence of observed peak frequency with redshift, consistent with the peaked-spectrum sample comprising both local CSS sources and high-redshift GPS sources. The 5GHz luminosity distribution lacks the brightest GPS and CSS sources of previous samples, implying that a convolution of source evolution and redshift influences the type of peaked-spectrum sources identified below 1GHz. Description: The GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) extragalactic catalog represents a significant advance in selecting peaked-spectrum sources, since it is constituted of sources that were contemporaneously surveyed with the widest fractional radio bandwidth to date, with 20 flux density measurements between 72 and 231MHz. We also use the NRAO VLA Sky Survey (NVSS; Condon+ 1998, VIII/65) and the Sydney University Molonglo Sky Survey (SUMSS; See Mauch+ 2008, VIII/81). Since the combination of NVSS and SUMSS cover the entire GLEAM survey and are an order of magnitude more sensitive, this study is sensitive to peaked-spectrum sources that peak anywhere between 72MHz and 843MHz/1.4GHz. The GLEAM survey was formed from observations conducted by the Murchison Widefield Array (MWA), which surveyed the sky between 72 and 231MHz from 2013 August to 2014 July (Wayth+ 2015PASA...32...25W - see also VIII/100). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file pkfreq.dat 804 1222 The peaked-spectrum sources in the high and low frequency samples (sources with a spectral peak between 72MHz and 1.4GHz) gps.dat 740 261 The sources from the GPS sample (sources that have a peak above 843MHz) convex.dat 740 116 *The convex sources between 72MHz and 1.4GHz outlined in the manuscript pk72.dat 740 36 The sources that peak below 72MHz refs.dat 83 90 References
Note on convex.dat: We define a convex spectrum as having a negative spectral index in the GLEAM band and a positive spectral index between the end of the GLEAM band and the frequency of SUMSS/NVSS. See section 6 for further explanations.
Description of file: The tar file "ori.tar" in FTP contains the 4 original files in FITS format with their original "readme.txt" file. See also: B/psr : ATNF Pulsar Catalogue (Manchester+, 2005) VIII/1 : The 3C and 3CR Catalogues (Edge+ 1959-1962) VIII/4 : Fourth Cambridge Survey (4C) (Pilkington+ 1965; Gower+ 1967) VIII/2 : Molonglo Reference Catalog of Radio Sources (Large+ 1981) VIII/14 : 87GB Catalog of radio sources (Gregory et al., 1991) VII/178 : Optical Extragalactic Emission-line Objects (Hewitt+ 1991) VIII/16 : Molonglo Reference Catalogue of Radio Sources (Large+ 1991) VIII/35 : Radio Sources observed with Culgoora Circular Array (Slee 1995) VIII/42 : Texas Survey of radio sources at 365MHz (Douglas+ 1996) VIII/38 : The Parkes-MIT-NRAO 4.85GHz (PMN) Surveys (Griffith+ 1993-1996) VIII/34 : Parkes Half-Jansky Flat-Spectrum Sample (Drinkwater + 1997) VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998) VIII/69 : The WISH catalogue at 352 MHz (de Breuck+ 2002) VII/250 : The 2dF Galaxy Redshift Survey (2dFGRS) (2dFGRS Team, 1998-2003) VII/241 : The 2dF QSO Redshift Survey (Croom+ 2004) VIII/78 : Sydney University Molonglo Sky Survey (SUMSS) (Mauch+ 2006) VIII/84 : A final non-redundant catalogue for 7C 151-MHz survey (Hales+ 2007) VIII/81 : Sydney University Molonglo Sky Survey (SUMSS V2.1) (Mauch+ 2008) VII/259 : 6dF galaxy survey final redshift release (Jones+, 2009) VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010) VIII/97 : 74MHz VLA Low-frequency Sky Survey Redux (VLSSr) (Lane+, 2014) VII/274 : The Roma BZCAT - 5th edition (Massaro+, 2015) VIII/100 : GaLactic and Extragalactic All-sky MWA survey (Hurley-Walker+, 2016) J/MNRAS/216/173 : Bright extragalactic radio sources at 2.7 GHz (Wall+, 1985) J/A+AS/80/103 : Optical spectrosc. of 1Jy, S4 and S5 sources (Stickel+ 1989) J/ApJS/90/173 : PMN map catalog of radiosources (Gregory+, 1994) J/A+AS/105/211 : Optical identification status of 1Jy catalog (Stickel+ 1994) J/ApJS/107/19 : MRC/1Jy Radio source survey. I. (McCarthy+ 1996) J/A+AS/124/259 : Westerbork Northern Sky Survey I. (Rengelink+ 1997) J/A+AS/131/303 : GHz-Peaked-Spectrum radio sources (Stanghellini+ 1998) J/A+A/363/887 : High freq. peakers. I. The bright sample (Dallacasa+, 2000) J/A+A/386/97 : Parkes quarter-Jansky flat-spectrum sample (Jackson+, 2002) J/AJ/126/2237 : Radio-excess IR gal. PMN/FSC sample selection (Drake+, 2003) J/ApJ/609/564 : Blazar counterparts for 3EG sources (Sowards-Emmerd+, 2004) J/ApJ/626/95 : Gamma-ray blazar candidates (Sowards-Emmerd+, 2005) J/AJ/131/114 : The Molonglo Southern 4Jy sample. II (Burgess+, 2006) J/MNRAS/372/425 : 2dF-SDSS Luminous Red Galaxy Survey, 2SLAQ (Cannon+, 2006) J/A+A/450/959 : VLBA images of High Frequency Peakers (Orienti+, 2006) J/MNRAS/371/898 : 20GHz extragalactic radio sources (Sadler+, 2006) J/MNRAS/381/341 : MRCR-SUMSS Ultra-steep-spectrum sample (Broderick+, 2007) J/A+A/463/97 : Optical observations of GPS radio sources (Labiano+, 2007) J/MNRAS/375/931 : Radio sources in the 6dFGS (Mauch+, 2007) J/A+A/469/451 : Radio continuum spectra of GPS galaxies (Torniainen+, 2007) J/MNRAS/385/1297 : CENSORS spectroscopic observations (Brookes+, 2008) J/MNRAS/390/819 : Combined NVSS-FIRST Galaxies (CoNFIG) sample (Gendre+, 2008) J/ApJS/175/97 : Survey of γ-ray blazar candidates (Healey+, 2008) J/ApJS/180/67 : Photometric selection of SDSS quasars. II. (Richards+, 2009) J/MNRAS/401/1429 : WiggleZ dark energy survey (DR1) (Drinkwater+, 2010) J/MNRAS/405/2302 : Improved redshifts for SDSS quasar spectra (Hewett+, 2010) J/MNRAS/408/2261 : Compact steep spectrum sample (Kunert-Bajraszewska+, 2010) J/MNRAS/402/2403 : Australia Telescope 20GHz Survey Catalog (Murphy+, 2010) J/MNRAS/417/2651 : AT20G-optical catalogue (Mahony+, 2011) J/MNRAS/416/1135 : Unbiased sample of CSS and GPS (Randall+, 2011) J/MNRAS/421/1569 : Properties of 18286 SDSS radio galaxies (Best+, 2012) J/ApJ/754/38 : Flat-Spectrum Radio QSOs (Chand+, 2012) J/MNRAS/434/956 : AT20G high-angular-resolution catalogue (Chhetri+, 2013) J/ApJ/795/63 : Faraday rotation from magnesium II absorbers (Farnes+, 2014) J/MNRAS/450/1477 : VLA 352MHz image of the Bootes field. I. (Coppejans+, 2015) J/MNRAS/453/1223 : BCG high radio-frequency properties (Hogan+, 2015) Byte-by-byte Description of file: pkfreq.dat
Bytes Format Units Label Explanations
1- 5 A5 --- --- [GLEAM] 7- 20 A14 --- GLEAM Name of the source in the GLEAM extragalactic catalog (Hurley-Walker+, 2016, VIII/100) (Gleam_name) 22- 31 F10.6 deg RAdeg Right ascension of the source in the GLEAM extragalactic catalog (J2000) (RA_gleam) 33- 42 F10.6 deg DEdeg Declination of the source in the GLEAM extragalactic catalog (J2000) (Dec_gleam) 44- 52 F9.6 Jy Spk [0.1/54] Flux density at the spectral peak (S_p) 54- 61 F8.6 Jy e_Spk [0.02/3] Uncertainty in Spk (Sperror) 63- 65 I3 MHz nuPk [72/944] Frequency of the spectral peak (nu_p) 67- 69 I3 MHz e_nuPk [8/330] Uncertainty in nuPk (nuperror) 71- 79 F9.6 --- alpTn [-3/1.6] Optically thin spectral index from fitting Equation 3 to the entire spectrum (alpha_thin) (1) 81- 88 F8.6 --- e_alpTn [0.04/1] Uncertainty in alpTn (alphathinerror) 90- 97 F8.6 --- alpTk [0.003/5]? Optically thick spectral index from fitting Equation 3 to the entire spectrum (alpha_thick) (1) 99-106 F8.6 --- e_alpTk [0.07/3]? Uncertainty in alpTk (alphathickerror) 108-116 F9.6 --- alpLow [-1.1/2.7] Low frequency spectral index derived from fitting a power-law to data between 72 and 231MHz (alpha_low) 118-125 F8.6 --- e_alpLow [0.06/0.9] Uncertainty in alpLow (alphalowerror) 127-135 F9.6 --- alpHigh [-2.1/0] High frequency spectral index derived from fitting a power-law to SUMSS and/or NVSS flux density point(s) and to GLEAM data at 189 and 212MHz (alpha_high) 137-144 F8.6 --- e_alpHigh [0.07/0.5] Uncertainty in alpHigh (alphahigherror) 146-154 F9.6 --- q [-10/9] Curvature parameter derived from fitting Equation 2 to only the GLEAM data (q) (G1) 156-163 F8.6 --- e_q [0.01/5] Uncertainty in q (q_error) 165-172 F8.6 --- z [0.03/5.2]? Spectroscopic redshift (z) 174-175 I2 --- r_z [4/89]? Reference for the reported spectroscopic redshift (z_ref) (see refs.dat file) 177-185 F9.6 Jy S200 [0.1/52] Integrated 200MHz flux density measurement of the source in the GLEAM wideband image (S_200) 187-194 F8.6 Jy e_S200 [0.005/0.2] Uncertainty in S200 (S200error) 196-205 F10.6 deg RAVdeg ? Right ascension of the source in VLSSr (Lane+, 2014, VIII/97) (RA_vlssr) 207-216 F10.6 deg DEVdeg ? Declination of the source in VLSSr (Dec_vlssr) 218-226 F9.6 Jy SVLSSr [0.3/57]? VLSSr flux density at 74MHz (S_vlssr) 228-235 F8.6 Jy e_SVLSSr [0.01/3]? Uncertainty in SVLSSr, convolved with calibration uncertainty (Svlssrerror) 237-243 A7 --- --- [TGSSADR] 245-260 A16 --- TGSSADR Name of the source in TGSS-ADR1 (Intema+, 2017, J/A+A/598/A78) (TGSS-ADR1_name) 262-270 F9.5 deg RATdeg ? Right ascension of the source in TGSS-ADR1 (J2000) (RA_tgss) 272-280 F9.5 deg DETdeg ? Declination of the source in TGSS-ADR1 (J2000) (Dec_tgss) 282-288 F7.4 Jy STGSS [0.04/58]? TGSS-ADR1 flux density at 150MHz (S_tgss) 290-295 F6.4 Jy e_STGSS [0.006/6]? Uncertainty in STGSS (Stgsserror) 297-309 A13 --- MRC Name of the source in MRC (Large+, 1991, VIII/16) (MRC_name) 311-320 F10.6 deg RAMdeg ? Right ascension of the source in MRC (J2000) (RA_mrc) 322-331 F10.6 deg DEMdeg ? Declination of the source in MRC (J2000) (Dec_mrc) 333-337 F5.2 Jy SMRC [0.7/52]? MRC flux density at 408MHz (S_mrc) 339-342 F4.2 Jy e_SMRC [0.04/3]? Uncertainty in SMRC, convolved with calibration uncertainty (Smrcerror) 344-353 F10.6 deg RASdeg ? Right ascension of the source in SUMSS (J2000) (RA_sumss) 355-363 F9.5 deg DESdeg ? Declination of the source in SUMSS (J2000) (Dec_sumss) 365-373 F9.6 Jy SSUMSS [0.02/25]? SUMSS flux density at 843MHz (S_sumss) 375-382 F8.6 Jy e_SSUMSS [0.001/2]? Uncertainty in SSUMSS, convolved with calibration uncertainty (Ssummserror) 384-393 F10.6 deg RANdeg ? Right ascension of the source in NVSS (J2000) (RA_nvss) 395-404 F10.6 deg DENdeg ? Declination of the source in NVSS (J2000) (Dec_nvss) 406-414 F9.6 Jy SNVSS [0.01/9]? NVSS flux density at 1.4GHz (S_nvss) 416-423 F8.6 Jy e_SNVSS [0.0008/0.5]? Uncertainty in SNVSS, convolved with calibration uncertainty (Snvsserror) 425-434 F10.6 Jy S76 [-0.4/52] Integrated flux density at 76MHz from the GLEAM extragalactic catalog (S_76) 436-443 F8.6 Jy e_S76 [0.05/2] Uncertainty in S76, which is the convolution of fitting and systematic errors (S76err) 445-453 F9.6 Jy S84 [-0.2/54] Integrated flux density at 84MHz from the GLEAM extragalactic catalog (S_84) 455-462 F8.6 Jy e_S84 [0.04/2] Uncertainty in S84, which is the convolution of fitting and systematic errors (S84err) 464-472 F9.6 Jy S92 [-0.2/54] Integrated flux density at 92MHz from the GLEAM extragalactic catalog (S_92) 474-481 F8.6 Jy e_S92 [0.03/2] Uncertainty in S92, which is the convolution of fitting and systematic errors (S92err) 483-491 F9.6 Jy S99 [-0.2/54] Integrated flux density at 99MHz from the GLEAM extragalactic catalog (S_99) 493-500 F8.6 Jy e_S99 [0.03/2] Uncertainty in S99, which is the convolution of fitting and systematic errors (S99err) 502-510 F9.6 Jy S107 [-0.2/56] Integrated flux density at 107MHz from the GLEAM extragalactic catalog (S_107) 512-519 F8.6 Jy e_S107 [0.02/2] Uncertainty in S107, which is the convolution of fitting and systematic errors (S107err) 521-529 F9.6 Jy S115 [-0.2/53] Integrated flux density at 115MHz from the GLEAM extragalactic catalog (S_115) 531-538 F8.6 Jy e_S115 [0.02/2] Uncertainty in S115, which is the convolution of fitting and systematic errors (S115err) 540-548 F9.6 Jy S122 [-0.05/51] Integrated flux density at 122MHz from the GLEAM extragalactic catalog (S_122) 550-557 F8.6 Jy e_S122 [0.02/2] Uncertainty in S122, which is the convolution of fitting and systematic errors (S122err) 559-567 F9.6 Jy S130 [-0.005/48] Integrated flux density at 130MHz from the GLEAM extragalactic catalog (S_130) 569-576 F8.6 Jy e_S130 [0.02/2] Uncertainty in S130, which is the convolution of fitting and systematic errors (S130err) 578-586 F9.6 Jy S143 [0.01/46] Integrated flux density at 143MHz from the GLEAM extragalactic catalog (S_143) 588-595 F8.6 Jy e_S143 [0.01/2] Uncertainty in S143, which is the convolution of fitting and systematic errors (S143err) 597-605 F9.6 Jy S151 [0.04/46] Integrated flux density at 151MHz from the GLEAM extragalactic catalog (S_151) 607-614 F8.6 Jy e_S151 [0.01/2] Uncertainty in S151, which is the convolution of fitting and systematic errors (S151err) 616-624 F9.6 Jy S158 [0.04/47] Integrated flux density at 158MHz from the GLEAM extragalactic catalog (S_158) 626-633 F8.6 Jy e_S158 [0.01/2] Uncertainty in S158, which is the convolution of fitting and systematic errors (S158err) 635-643 F9.6 Jy S166 [0.05/48] Integrated flux density at 166MHz from the GLEAM extragalactic catalog (S_166) 645-652 F8.6 Jy e_S166 [0.01/2] Uncertainty in S166, which is the convolution of fitting and systematic errors (S166err) 654-662 F9.6 Jy S174 [0.09/50]? Integrated flux density at 174MHz from the GLEAM extragalactic catalog (S_174) 664-671 F8.6 Jy e_S174 [0.01/2]? Uncertainty in S174, which is the convolution of fitting and systematic errors (S174err) 673-681 F9.6 Jy S181 [0.06/51]? Integrated flux density at 181MHz from the GLEAM extragalactic catalog (S_181) 683-690 F8.6 Jy e_S181 [0.01/2]? Uncertainty in S181, which is the convolution of fitting and systematic errors (S181err) 692-700 F9.6 Jy S189 [0.1/51]? Integrated flux density at 189MHz from the GLEAM extragalactic catalog (S_189) 702-709 F8.6 Jy e_S189 [0.01/2]? Uncertainty in S189, which is the convolution of fitting and systematic errors (S189err) 711-719 F9.6 Jy S197 [0.05/51]? Integrated flux density at 197MHz from the GLEAM extragalactic catalog (S_197) 721-728 F8.6 Jy e_S197 [0.01/2]? Uncertainty in S197, which is the convolution of fitting and systematic errors (S197err) 730-738 F9.6 Jy S204 [0.06/51]? Integrated flux density at 204MHz from the GLEAM extragalactic catalog (S_204) 740-747 F8.6 Jy e_S204 [0.01/2]? Uncertainty in S204, which is the convolution of fitting and systematic errors (S204err) 749-757 F9.6 Jy S212 [0.1/51] Integrated flux density at 212MHz from the GLEAM extragalactic catalog (S_212) 759-766 F8.6 Jy e_S212 [0.01/2] Uncertainty in S212, which is the convolution of fitting and systematic errors (S212err) 768-776 F9.6 Jy S220 [0.1/51] Integrated flux density at 220MHz from the GLEAM extragalactic catalog (S_220) 778-785 F8.6 Jy e_S220 [0.01/2] Uncertainty in S220, which is the convolution of fitting and systematic errors (S220err) 787-795 F9.6 Jy S227 [0.05/51]? Integrated flux density at 227MHz from the GLEAM extragalactic catalog (S_227) 797-804 F8.6 Jy e_S227 [0.01/2]? Uncertainty in S227, which is the convolution of fitting and systematic errors (S227err)
Note (1): Equation (3) in section 4.1 as below: Sν=Sp/(1-e-1)(1-e-(ν/νp){alphathinthick) (ν/νp)αthick^ where αthick and αthin are the spectral indices in the optically thick and optically thin regimes of the spectrum, respectively. Sp is the flux density at the frequency νp.
Byte-by-byte Description of file: gps.dat convex.dat pk72.dat
Bytes Format Units Label Explanations
1- 5 A5 --- --- [GLEAM] 7- 20 A14 --- GLEAM Name of the source in the GLEAM extragalactic catalog (Hurley-Walker+, 2016, VIII/100) (Gleam_name) 22- 31 F10.6 deg RAdeg Right ascension of the source in the GLEAM extragalactic catalog (J2000) (RA_gleam) 33- 42 F10.6 deg DEdeg Declination of the source in the GLEAM extragalactic catalog (J2000) (Dec_gleam) 44- 52 F9.6 --- alpLow Low frequency spectral index derived from fitting a power-law to data between 72 and 231MHz (alpha_low) 54- 61 F8.6 --- e_alpLow Uncertainty in alpLow (alphalowerror) 63- 71 F9.6 --- alpHigh High frequency spectral index derived from fitting a power-law to SUMSS and/or NVSS flux density point(s) and to GLEAM data at 189 and 212MHz (alpha_high) 73- 80 F8.6 --- e_alpHigh Uncertainty in alpHigh (alphahigherror) 82- 90 F9.6 --- q Curvature parameter derived from fitting Equation 2 to only the GLEAM data (q) (G1) 92- 99 F8.6 --- e_q Uncertainty in q (q_error) 101-108 F8.6 --- z [0.006/4.3]? Spectroscopic redshift (only for gps.dat) (z) 110-111 I2 --- r_z [0/86]? Reference for the reported spectroscopic redshift (z_ref) (see refs.dat file) 113-121 F9.6 Jy S200 [0.1/41] Integrated 200MHz flux density measurement of the source in the GLEAM wideband image (S_200) 123-130 F8.6 Jy e_S200 Uncertainty in S200 (S200error) 132-141 F10.6 deg RAVdeg ? Right ascension of the source in VLSSr (RA_vlssr) 143-152 F10.6 deg DEVdeg ? Declination of the source in VLSSr (Dec_vlssr) 154-162 F9.6 Jy SVLSSr ? VLSSr flux density at 74MHz (S_vlssr) 164-171 F8.6 Jy e_SVLSSr ? Uncertainty in SVLSSr, convolved with calibration uncertainty (Svlssrerror) 173-179 A7 --- --- [TGSSADR] 181-196 A16 --- TGSSADR Name of the source in TGSS-ADR1 (Intema+, 2017, J/A+A/598/A78) (TGSS-ADR1_name) 198-206 F9.5 deg RATdeg ? Right ascension of the source in TGSS-ADR1 (J2000) (RA_tgss) 208-216 F9.5 deg DETdeg ? Declination of the source in TGSS-ADR1 (J2000) (Dec_tgss) 218-224 F7.4 Jy STGSS ? TGSS-ADR1 flux density at 150MHz (S_tgss) 226-231 F6.4 Jy e_STGSS ? Uncertainty in STGSS (Stgsserror) 233-245 A13 --- MRC Name of the source in MRC (Large+, 1991, VIII/16) (MRC_name) 247-256 F10.6 deg RAMdeg ? Right ascension of the source in MRC (J2000) (RA_mrc) 258-267 F10.6 deg DEMdeg ? Declination of the source in MRC (J2000) (Dec_mrc) 269-273 F5.2 Jy SMRC ? MRC flux density at 408MHz (S_mrc) 275-278 F4.2 Jy e_SMRC ? Uncertainty in SMRC, convolved with calibration uncertainty (Smrcerror) 280-289 F10.6 deg RASdeg ? Right ascension of the source in SUMSS (J2000) (RA_sumss) 291-299 F9.5 deg DESdeg ? Declination of the source in SUMSS (J2000) (Dec_sumss) 301-309 F9.6 Jy SSUMSS ? SUMSS flux density at 843MHz (S_sumss) 311-318 F8.6 Jy e_SSUMSS ? Uncertainty in SSUMSS, convolved with calibration uncertainty (Ssummserror) 320-329 F10.6 deg RANdeg ? Right ascension of the source in NVSS (J2000) (RA_nvss) 331-340 F10.6 deg DENdeg ? Declination of the source in NVSS (J2000) (Dec_nvss) 342-350 F9.6 Jy SNVSS ? NVSS flux density at 1.4GHz (S_nvss) 352-359 F8.6 Jy e_SNVSS ? Uncertainty in SNVSS, convolved with calibration uncertainty (Snvsserror) 361-370 F10.6 Jy S76 Integrated flux density at 76MHz from the GLEAM extragalactic catalog (S_76) 372-379 F8.6 Jy e_S76 Uncertainty in S76, which is the convolution of fitting and systematic errors (S76err) 381-389 F9.6 Jy S84 Integrated flux density at 84MHz from the GLEAM extragalactic catalog (S_84) 391-398 F8.6 Jy e_S84 Uncertainty in S84, which is the convolution of fitting and systematic errors (S84err) 400-408 F9.6 Jy S92 Integrated flux density at 92MHz from the GLEAM extragalactic catalog (S_92) 410-417 F8.6 Jy e_S92 Uncertainty in S92, which is the convolution of fitting and systematic errors (S92err) 419-427 F9.6 Jy S99 Integrated flux density at 99MHz from the GLEAM extragalactic catalog (S_99) 429-436 F8.6 Jy e_S99 Uncertainty in S99, which is the convolution of fitting and systematic errors (S99err) 438-446 F9.6 Jy S107 Integrated flux density at 107MHz from the GLEAM extragalactic catalog (S_107) 448-455 F8.6 Jy e_S107 Uncertainty in S107, which is the convolution of fitting and systematic errors (S107err) 457-465 F9.6 Jy S115 Integrated flux density at 115MHz from the GLEAM extragalactic catalog (S_115) 467-474 F8.6 Jy e_S115 Uncertainty in S115, which is the convolution of fitting and systematic errors (S115err) 476-484 F9.6 Jy S122 Integrated flux density at 122MHz from the GLEAM extragalactic catalog (S_122) 486-493 F8.6 Jy e_S122 Uncertainty in S122, which is the convolution of fitting and systematic errors (S122err) 495-503 F9.6 Jy S130 Integrated flux density at 130MHz from the GLEAM extragalactic catalog (S_130) 505-512 F8.6 Jy e_S130 Uncertainty in S130, which is the convolution of fitting and systematic errors (S130err) 514-522 F9.6 Jy S143 Integrated flux density at 143MHz from the GLEAM extragalactic catalog (S_143) 524-531 F8.6 Jy e_S143 Uncertainty in S143, which is the convolution of fitting and systematic errors (S143err) 533-541 F9.6 Jy S151 Integrated flux density at 151MHz from the GLEAM extragalactic catalog (S_151) 543-550 F8.6 Jy e_S151 Uncertainty in S151, which is the convolution of fitting and systematic errors (S151err) 552-560 F9.6 Jy S158 Integrated flux density at 158MHz from the GLEAM extragalactic catalog (S_158) 562-569 F8.6 Jy e_S158 Uncertainty in S158, which is the convolution of fitting and systematic errors (S158err) 571-579 F9.6 Jy S166 Integrated flux density at 166MHz from the GLEAM extragalactic catalog (S_166) 581-588 F8.6 Jy e_S166 Uncertainty in S166, which is the convolution of fitting and systematic errors (S166err) 590-598 F9.6 Jy S174 ? Integrated flux density at 174MHz from the GLEAM extragalactic catalog (S_174) 600-607 F8.6 Jy e_S174 ? Uncertainty in S174, which is the convolution of fitting and systematic errors (S174err) 609-617 F9.6 Jy S181 ? Integrated flux density at 181MHz from the GLEAM extragalactic catalog (S_181) 619-626 F8.6 Jy e_S181 ? Uncertainty in S181, which is the convolution of fitting and systematic errors (S181err) 628-636 F9.6 Jy S189 ? Integrated flux density at 189MHz from the GLEAM extragalactic catalog (S_189) 638-645 F8.6 Jy e_S189 ? Uncertainty in S189, which is the convolution of fitting and systematic errors (S189err) 647-655 F9.6 Jy S197 ? Integrated flux density at 197MHz from the GLEAM extragalactic catalog (S_197) 657-664 F8.6 Jy e_S197 ? Uncertainty in S197, which is the convolution of fitting and systematic errors (S197err) 666-674 F9.6 Jy S204 ? Integrated flux density at 204MHz from the GLEAM extragalactic catalog (S_204) 676-683 F8.6 Jy e_S204 ? Uncertainty in S204, which is the convolution of fitting and systematic errors (S204err) 685-693 F9.6 Jy S212 Integrated flux density at 212MHz from the GLEAM extragalactic catalog (S_212) 695-702 F8.6 Jy e_S212 Uncertainty in S212, which is the convolution of fitting and systematic errors (S212err) 704-712 F9.6 Jy S220 Integrated flux density at 220MHz from the GLEAM extragalactic catalog (S_220) 714-721 F8.6 Jy e_S220 Uncertainty in S220, which is the convolution of fitting and systematic errors (S220err) 723-731 F9.6 Jy S227 ? Integrated flux density at 227MHz from the GLEAM extragalactic catalog (S_227) 733-740 F8.6 Jy e_S227 ? Uncertainty in S227, which is the convolution of fitting and systematic errors (S227err)
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Ref Reference code 4- 22 A19 --- BibCode Bibcode of the reference 24- 49 A26 --- Auth First author's name(s) 51- 83 A33 --- Comm Comment
Global notes: Note (G1): Equation (2) in section 4.1 as below: Sν=αναeq(lnν)2 where q parametrizes the spectral curvature and νp=e-α/2q is the frequency at which the spectrum peaks.
History: From electronic version of the journal
(End) Emmanuelle Perret [CDS] 26-Sep-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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