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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
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such as coordinates and times. h:m:s and d:m:s units are normally
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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)
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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
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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.
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(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 13-Nov-2000