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Detailed Description of J/ApJS/129/547 :
RBSC-NVSS sample. I. (Bauer+, 2000)

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Note : this is the description file of the original catalog. This HTML page corresponds well to the original description, but some minor changes in the format may have been introduced in the FITS output files in order to allow for arithmetic operations on quantities such as coordinates and times. h:m:s and d:m:s units are normally converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the units; the value given in the HTML files supersedes the value indicated in the ReadMe file for this catalogue.
J/ApJS/129/547      RBSC-NVSS sample. I.                     (Bauer+, 2000)
================================================================================
RBSC-NVSS sample. I. Radio and optical identifications of a complete sample
of 1556 bright X-ray sources.
     Bauer F.E., Condon J.J., Thuan T.X., Broderick J.J.
    <Astrophys. J. Suppl. Ser. 129, 547 (2000)>
    =2000ApJS..129..547B
================================================================================
ADC_Keywords: Radio sources ; Surveys ; Cross identifications

Keywords: catalogs - radio continuum: general - surveys - X-rays: general


Abstract:
    We cross-identified the ROSAT Bright Source Catalog (RBSC, Cat.
    IX/10) and the NRAO VLA Sky Survey (NVSS, Cat. VIII/65) to
    construct the RBSC-NVSS sample of the brightest X-ray sources (>=0.1
    counts/s~10-12erg/cm2/s in the 0.1-2.4keV band) that are also
    radio sources (S>=2.5mJy at 1.4GHz) in the 7.8sr of extragalactic sky
    with |b|>15° and {delta}>-40°. The sky density of NVSS sources
    is low enough that they can be reliably identified with RBSC sources
    having rms positional uncertainties >=10". We used the more accurate
    radio positions to make reliable X-ray/radio/optical identifications
    down to the POSS plate limits. We obtained optical spectra for many of
    the bright identifications lacking published redshifts. The resulting
    X-ray/radio sample is unique in its size (1557 objects), composition
    (a mixture of nearly normal galaxies, Seyfert galaxies, quasars, and
    clusters), and low average redshift [<z>~0.1]

File Summary:

FileName Lrecl Records Explanations
× 80 . This file × ReadMe 80 . This file × table1.dat 102 48 RBSC Galactic Identifications × table2.dat 140 1699 RBSC-NVSS Extragalactic Identifications × notes.dat 80 308 Individual notes
See also: IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999) VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 16 A16 --- 1RXS RBSC (Cat. IX/10) 1RXS object name 17 A1 --- n_1RXS [N] indicates a note detailed in file notes.dat 18- 30 A13 --- Name Common name found in Simbad (2000) 32- 39 E8.2 mW/m2 Sx ? RBSC X-ray flux 41- 42 I2 h RAh Right ascension J2000 44- 45 I2 min RAm Right ascension J2000 47- 51 F5.2 s RAs Right ascension J2000 53 A1 --- DE- Declination sign J2000 54- 55 I2 deg DEd Declination J2000 57- 58 I2 arcmin DEm Declination J2000 60- 63 F4.1 arcsec DEs Declination J2000 64 A1 --- n_Pos [O] O: optical position given (1) 66- 73 F8.1 mJy S1.4GHz ? Flux density at 1.4GHz 74 A1 --- n_S1.4GHz [E] E: extended radio emission 76- 79 F4.2 % IDprob [0/1]? Identification probability P(R,V) 81- 83 A3 --- Type Simbad object type (2) 85- 88 F4.1 mag Bmag ? Simbad B magnitude 89 A1 --- u_Bmag [)] Uncertainty flag on Bmag 91-102 A12 --- SpType Simbad spectral type
Note (1): Optical position given, because identification is more than 3{sigma} from radio position or there are multiple optical candidates Note (2): Simbad object type: * : Star *Al: Eclipsing binary of Algol type *bL: Eclipsing binary of Beta Lyr type *Cl: Star or globular cluster *DQ: Cataclysmic variable of DQ Her type *Fl: Flare star *Mi: Variable star of Mira Cet type *Pu: Pulsating variable star *Ro: Rotationally variable star *RS: Star of RS CVn type *sr: Semiregular pulsating star *TT: T Tau-type star *V : Variable star PN : Planetary nebula
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 16 A16 --- 1RXS RBSC (Cat. IX/10) 1RXS object name 17 A1 --- n_1RXS [N] indicates a note detailed in file notes.dat 19- 41 A23 --- Name Common name found in NED (2000) 43- 50 E8.2 mW/m2 Sx ? RBSC X-ray flux 53- 54 I2 h RAh Right ascension J2000 56- 57 I2 min RAm Right ascension J2000 59- 63 F5.2 s RAs Right ascension J2000 65 A1 --- DE- Declination sign J2000 66- 67 I2 deg DEd Declination J2000 69- 70 I2 arcmin DEm Declination J2000 72- 75 F4.1 arcsec DEs Declination J2000 76 A1 --- OPos [O] Optical Position ? (1) 77 A1 --- RadM [R] Radio remeasured ? (2) 78 A1 --- FIRST [F] FIRST used ? (3) 80- 86 F7.1 mJy S1.4GHz NVSS/FIRST 1.4GHz flux density 87 A1 --- RadExt [ESDTA] Radio Extended ? (4) 90- 93 F4.2 --- IDProb [0/1]? ID Probability (5) 96- 99 F4.1 mag Bmag ? B magnitude from NED (2000) or USNO-A2 cat. 100 A1 --- r_Bmag [*] '*' indicates a magnitude from USNO-A2 (Cat. I/252). 103-108 F6.4 --- z ? Redshift 109 A1 --- u_z [?] '?': redshift uncertain 110 I1 --- r_z [1,3]? Source of redshift (6) 112-129 A18 --- MType Morphology from NED (2000) 130-140 A11 --- SpType Spectral classification; a '?' indicates uncertainty
Note (1): If value = 'O', then optical position is listed instead of radio because identification was more than 3{sigma} from radio position or there were multiple optical candidates Note (2): If value = 'R', then NVSS position and/or flux density were remeasured Note (3): If value = 'F', then high resolution position and flux density were taken from the FIRST 1.4GHz survey (White et al., 1997, Cat. VIII/59). Note (4): Radio emission: E: radio emission is extended S: radio emission is extended and resolved into a central point source and single lobe - we give the central point source position and total emission D: radio emission is extended and resolved into two lobes - we give the centroid position and total emission; T: radio emission is extended and resolved into three components - we give the central source position and total emission A: radio emission is likely to be indirectly linked to X-ray emission - an "association"Note (5): Probability that identification of X-ray/radio/optical source is Note (5): Probability that identification of X-ray/radio/optical source is correct; blank indicates that other factors were taken into account when identifying this object Note (6): Source of redshift: ' ': redshift and spectral classification are from NED (2000); '1': redshift and spectral classification are from us (KPNO 2.1m 1997-1999) '2': redshift and spectral classification are from Schwope et al. (2000AN....321....1S, see Cat. IX/32) '2': redshift and spectral classification are from Brinkmann et al. (2000, Cat. J/A+A/356/445)
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 16 A16 --- 1RXS RBSC 1RXS object name 18- 80 A63 --- Note Text of the note
History: From ApJS electronic version * 23-Dec-2000, CDS: the original table2 missed 5 "N" flags indicating notes (for 1RXS sources J114452.7+194706, J142139.7+371743, J212706.7-120927, J232519.4-120741, J234741.2-280829), and contained one spurious "N" flag (for source J142136.4+493305). * 30-Jan-2002: following a note by F. Bauer (fbauer@goo.astro.psu.edu) about a missing reference in table2, the description of table2.dat and its contents were replaced by a revised version. ================================================================================ (End) Greg Schwarz [AAS], Patricia Bauer [CDS] 13-Nov-2000