ADC/CDS Standard Document for Catalog:/journal_tables/ApJS/129/547/
ADC/CDS Standard Document for Catalog:| 1. Use the ADC Data Viewer Suite to visualize the data. |
|
| 2. Get the data files via anonymous FTP. (See Note.) |
|
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^-12^erg/cm^2^/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{deg} and {delta}>-40{deg}. 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
--------------------------------------------------------------------------------
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
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